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ASRB NET Seed Science Mock Test - 2 - Agriculture Exams MCQ


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30 Questions MCQ Test - ASRB NET Seed Science Mock Test - 2

ASRB NET Seed Science Mock Test - 2 for Agriculture Exams 2025 is part of Agriculture Exams preparation. The ASRB NET Seed Science Mock Test - 2 questions and answers have been prepared according to the Agriculture Exams exam syllabus.The ASRB NET Seed Science Mock Test - 2 MCQs are made for Agriculture Exams 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for ASRB NET Seed Science Mock Test - 2 below.
Solutions of ASRB NET Seed Science Mock Test - 2 questions in English are available as part of our course for Agriculture Exams & ASRB NET Seed Science Mock Test - 2 solutions in Hindi for Agriculture Exams course. Download more important topics, notes, lectures and mock test series for Agriculture Exams Exam by signing up for free. Attempt ASRB NET Seed Science Mock Test - 2 | 150 questions in 120 minutes | Mock test for Agriculture Exams preparation | Free important questions MCQ to study for Agriculture Exams Exam | Download free PDF with solutions
ASRB NET Seed Science Mock Test - 2 - Question 1
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Tomato seeds give 90% germination at-

Detailed Solution for ASRB NET Seed Science Mock Test - 2 - Question 1

The correct answer is B. 40 DAP

Tomato seeds reach a 90% germination rate at 40 days after planting (DAP). This timing highlights the ideal conditions for germination, underlining the significance of monitoring growth stages to ensure successful tomato cultivation.

Details on Other Options:

  • A: This option is incorrect as 30 DAP does not provide the optimal conditions for achieving a 90% germination rate in tomato seeds.
  • C: This option is incorrect because 60 DAP is beyond the optimal germination period, indicating that most seeds would have already germinated by this time.
  • D: This option is incorrect since 35 DAP is still short of the 40 DAP mark, which is necessary for reaching the 90% germination rate.

Conclusion:

The B, as the most accurate and relevant option, stands out for its representation of the optimal germination period for tomato seeds, clearly differentiating it from the other options. Thus, 40 DAP is the correct choice.

ASRB NET Seed Science Mock Test - 2 - Question 2
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Amount of energy released in anaerobic respiration is-

Detailed Solution for ASRB NET Seed Science Mock Test - 2 - Question 2

The correct answer is A. 2 ATP

Anaerobic respiration is the process of breaking down glucose without oxygen, typically occurring in environments lacking aerobic conditions. During this metabolic pathway, glycolysis generates a net total of 2 ATP molecules, which is significantly lower than what is produced in aerobic respiration.

Details on Other Options:

  • B: This option is incorrect because 40 ATP is the theoretical maximum yield from aerobic respiration, not anaerobic respiration.
  • C: This option is incorrect as 38 ATP is the yield from aerobic respiration, reflecting the complete oxidation of glucose in the presence of oxygen.
  • D: This option is incorrect since 6 ATP is not a recognized yield from any standard metabolic pathway related to glucose breakdown.

Conclusion:

The A, as the most accurate and relevant option, is distinguished by its representation of the energy yield in anaerobic respiration, clearly differentiating it from the other options. Thus, 2 ATP is the correct choice.

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ASRB NET Seed Science Mock Test - 2 - Question 3
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In hybrid seed production of maize, the planting ratio for single cross hybrids will be-

Detailed Solution for ASRB NET Seed Science Mock Test - 2 - Question 3

The correct answer is A. 4:2

In maize hybrid seed production, particularly for single cross hybrids, a planting ratio of 4:2 is typically utilized. This means that for every four rows of the female parent, there are two rows of the male parent planted alternately. This specific ratio is essential for ensuring effective pollination and achieving optimal hybrid seed yield.

Details on Other Options:

  • B: This option is incorrect because an 8:2 ratio would result in excessive male plants, potentially leading to poor pollination and reduced seed quality.
  • C: This option is incorrect as a 6:3 ratio does not align with the standard practices for single cross hybrids, which could affect the balance needed for optimal hybridization.
  • D: This option is incorrect since a 12:3 ratio would create an imbalance in the planting, making it less effective for achieving the desired hybridization results.

Conclusion:

Option: A, as the most accurate and relevant choice, stands out for its adherence to the established planting practices in maize hybrid production, clearly differentiating it from the other options. Thus, 4:2 is the correct choice.

ASRB NET Seed Science Mock Test - 2 - Question 4
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Isolation distance for paddy variety seed production in certified class is?
Detailed Solution for ASRB NET Seed Science Mock Test - 2 - Question 4

The correct answer is A. 3 m

Isolation distance is the minimum space needed between different varieties of crops to avoid cross-pollination and preserve seed purity. For certified paddy seed production, maintaining an isolation distance of 3 meters is essential to prevent contamination from other varieties, thus ensuring the quality and integrity of the seeds produced.

Details on Other Options:

  • B: This option is incorrect because a 30-meter distance is excessive for certified paddy seed production, which only requires a 3-meter separation to maintain genetic purity.
  • C: This option is incorrect as a 100-meter isolation distance is not necessary for paddy seeds, which can be effectively managed with a shorter distance.
  • D: This option is incorrect since a 200-meter distance far exceeds the requirement for certified paddy seed production, making it impractical and unnecessary.

Conclusion:

Option: A, as the most accurate and relevant option, stands out for its adherence to the established guidelines for paddy seed production, clearly differentiating it from the other options. Thus, 3 m is the correct choice.

ASRB NET Seed Science Mock Test - 2 - Question 5
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Prevention of self-pollination by flower structure is called ______________.
Detailed Solution for ASRB NET Seed Science Mock Test - 2 - Question 5

The correct answer is C. Herkogamy

Herkogamy is the structural arrangement in flowers that prevents self-pollination by keeping the reproductive parts physically separated. This adaptation encourages cross-pollination, which enhances genetic diversity among the offspring. The term originates from the Greek words "herkos," meaning barrier, and "gamos," meaning marriage, highlighting its role in preventing self-fertilization within the same flower.

Details on Other Options:

  • A: Autogamy is incorrect because it refers to self-pollination, where a flower fertilizes itself, which is the opposite of what herkogamy aims to achieve.
  • B: Allogamy is not the correct option as it denotes the process of cross-pollination between different flowers, rather than the structural prevention of self-pollination.
  • D: Dichogamy is incorrect since it describes the timing of maturation of male and female parts in flowers, which can help prevent self-fertilization but does not specifically refer to structural separation.

Conclusion:

The C, as the most accurate and relevant option, stands out for its specific focus on the structural prevention of self-pollination, clearly differentiating it from the other options. Thus, Herkogamy is the correct choice.

ASRB NET Seed Science Mock Test - 2 - Question 6
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An example for vegetative apomixis is?
Detailed Solution for ASRB NET Seed Science Mock Test - 2 - Question 6

The correct answer is A. Agave

Vegetative apomixis refers to the process where new plants arise from vegetative parts rather than seeds or spores. Agave exemplifies this process as it reproduces via offsets or bulbils that emerge from its base. This method enables Agave to create genetically identical offspring without seed production, showcasing a unique form of asexual reproduction.

Details on Other Options:

  • B: This option is incorrect because Opuntia typically reproduces through seeds and vegetative fragments, but it does not primarily rely on vegetative apomixis.
  • C: This option is incorrect since Vetiver reproduces mainly through seeds and clonal propagation, not specifically through vegetative apomixis.
  • D: This option is incorrect as Colocasia reproduces through corms and seeds, lacking the specific mechanism of vegetative apomixis demonstrated by Agave.

Conclusion:

Option: A, as the most accurate and relevant option, stands out for its clear representation of vegetative apomixis, differentiating it from the other options. Thus, Agave is the correct choice.

ASRB NET Seed Science Mock Test - 2 - Question 7
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The isolation distance normally practiced during seed production for groundnut varieties is _____________.
Detailed Solution for ASRB NET Seed Science Mock Test - 2 - Question 7

The correct answer is A. 3 m

An isolation distance of 3 meters is typically maintained during the seed production of groundnut varieties. This distance is crucial in minimizing the risk of cross-pollination among different varieties, thereby preserving the genetic integrity of the seeds.

Details on Other Options:

  • B: This option is incorrect as an isolation distance of 10 meters is generally excessive for groundnut seed production and not commonly practiced.
  • C: This option is incorrect because a 50-meter distance is far greater than what is typically required for groundnut varieties, making it impractical.
  • D: This option is incorrect since a 200-meter isolation distance is unnecessarily large for groundnut seed production, which can lead to inefficiencies.

Conclusion:

Option: A, as the most accurate and relevant option, is essential for maintaining genetic purity in groundnut seed production, clearly distinguishing it from the other options. Thus, 3 m is the correct choice.

ASRB NET Seed Science Mock Test - 2 - Question 8
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Orange certificate is-
Detailed Solution for ASRB NET Seed Science Mock Test - 2 - Question 8

The correct answer is C. Seed lot certificate

The orange certificate is known as a Seed Lot Certificate, which certifies the quality and attributes of a particular batch of seeds. It contains essential details such as the seed's origin, variety, purity, and germination rate. This certificate plays a vital role in ensuring transparency and traceability within the seed industry, aiding in the movement and trade of seeds while upholding quality standards.

Details on Other Options:

  • A: This option is incorrect because a Phytosanitary certificate is issued to confirm that a shipment of plants or plant products is pest-free and complies with the importing country's regulations.
  • B: This option is incorrect as a Seed sample certificate pertains to specific samples taken for testing rather than certifying a complete lot of seeds.
  • D: This option is incorrect since a Seed passport provides information about the seed's origin and quality but is not specifically identified as the orange certificate.

Conclusion:

The C, as the most accurate and relevant option, stands out for its specific role in certifying seed lots, clearly differentiating it from the other options. Thus, Seed lot certificate is the correct choice.

ASRB NET Seed Science Mock Test - 2 - Question 9
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Duties of seed analyst is detailed in?
Detailed Solution for ASRB NET Seed Science Mock Test - 2 - Question 9

The correct answer is B. Section 12 of Seed Act

Section 12 of the Seed Act specifies the responsibilities of a seed analyst. This section outlines the essential tasks that seed analysts must undertake to evaluate seed quality and ensure compliance with regulatory standards. Seed analysts are vital in the agricultural sector, as they help maintain the quality and integrity of seeds. Their duties typically encompass seed testing, evaluation, and certification processes, which are critical for upholding high industry standards.

Details on Other Options:

  • A: This option is incorrect because Section 5 of the Seed Act does not detail the specific duties of seed analysts; rather, it may cover other foundational aspects of the Seed Act.
  • C: This option is incorrect as Section 11 of the Seed Act does not pertain to the responsibilities of seed analysts, focusing instead on different provisions within the Act.
  • D: This option is incorrect since Section 25 of the Seed Act is not related to the duties of seed analysts and likely addresses other regulatory matters within the seed industry.

Conclusion:

Option: B, as the most accurate and relevant option, stands out for its direct reference to the duties of seed analysts, clearly differentiating it from the other options. Thus, Section 12 of the Seed Act is the correct choice.

ASRB NET Seed Science Mock Test - 2 - Question 10
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The pollen enclosed within the anther is released at maturity through pores in?
Detailed Solution for ASRB NET Seed Science Mock Test - 2 - Question 10

The correct answer is A. Ericaceae

Pollen contained in the anther is released when mature through pores found in the Ericaceae family. This family, commonly referred to as heaths and heathers, encompasses a variety of species known for their unique floral structures and ecological significance.

Details on Other Options:

  • B: This option is incorrect because the Lauraceae family, which includes trees and shrubs like bay laurel, typically releases pollen through different mechanisms, not specifically through pores in the anther.
  • C: This option is incorrect as the Fagaceae family, which includes oaks and beeches, has distinct pollen release methods that do not involve the pore structure characteristic of the Ericaceae family.
  • D: This option is incorrect since the Fabaceae family, or legumes, has its own unique adaptations for pollen release that differ from the pore-based release seen in the Ericaceae family.

Conclusion:

Option: A, as the most accurate and relevant option, stands out for its specific association with the pore-based pollen release mechanism, clearly differentiating it from the other families. Thus, Ericaceae is the correct choice.

ASRB NET Seed Science Mock Test - 2 - Question 11
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Rope pulling is practiced for good seed set in hybrid seed production of-
Detailed Solution for ASRB NET Seed Science Mock Test - 2 - Question 11

The correct answer is B. Rice

Rope pulling is a technique utilized in hybrid rice seed production. This process involves the use of male-sterile lines as the female parent, with a restorer line providing the necessary pollen. To enhance seed set, rope pulling helps in the even distribution of pollen from the restorer plants to the female plants, ensuring successful fertilization and seed formation.

Details on Other Options:

  • A: This option is incorrect because sorghum does not typically require rope pulling for hybrid seed production, as other methods are more commonly used for pollination.
  • C: This option is incorrect since sunflower production relies on different pollination techniques, and rope pulling is not a standard practice in its hybrid seed production.
  • D: This option is incorrect as castor also does not utilize rope pulling in its hybrid seed production, favoring other methods for effective pollination.

Conclusion:

The B, as the most accurate and relevant option, stands out for its specific application in hybrid rice seed production, clearly distinguishing it from the other options. Thus, Rice is the correct choice.

ASRB NET Seed Science Mock Test - 2 - Question 12
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The breeding tool for red gram hybrid seed production is?
Detailed Solution for ASRB NET Seed Science Mock Test - 2 - Question 12

The correct answer is D. Genetic male sterility

Genetic Male Sterility (GMS) serves as a crucial breeding tool for producing hybrid seeds in red gram. This technique focuses on developing male-sterile plants through genetic methods, enabling controlled hybridization. By utilizing GMS, breeders can efficiently cross male-sterile plants with fertile ones to create hybrids, ensuring the desired traits are passed on to the next generation.

Details on Other Options:

  • A: This option is incorrect because Cytoplasmic Male Sterility (CMS) involves sterility due to cytoplasmic factors rather than genetic manipulation, making it less applicable in the specific context of red gram hybrid production.
  • B: This option is incorrect as Self-incompatibility refers to the inability of a plant to fertilize itself, which does not directly facilitate hybrid seed production in red gram.
  • C: This option is incorrect since Emasculation and dusting are manual techniques for hybridization, but they are not as efficient as utilizing genetic male sterility for large-scale seed production.

Conclusion:

Option: D, as the most accurate and relevant option, stands out for its effectiveness in facilitating hybrid seed production through genetic means, clearly differentiating it from the other options. Thus, Genetic male sterility is the correct choice.

ASRB NET Seed Science Mock Test - 2 - Question 13
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Regulate plants response to light throughout its life-
Detailed Solution for ASRB NET Seed Science Mock Test - 2 - Question 13

The correct answer is A. Phytochrome

Phytochromes are specialized photoreceptors in plants that detect light in the red and far-red wavelengths. They play a vital role in managing how plants respond to light throughout their lifecycle. These receptors are essential for several physiological processes, such as seed germination, stem growth, leaf development, and flowering timing. By acting as molecular switches, phytochromes regulate gene expression based on the light environment.

Details on Other Options:

  • B: This option is incorrect because chloroplasts are organelles responsible for photosynthesis, converting light energy into chemical energy, but they do not directly regulate light responses.
  • C: This option is incorrect as photosynthesis is the process by which plants convert light energy into glucose and oxygen, but it does not involve the regulation of light responses.
  • D: This option is incorrect since the Golgi complex is involved in modifying, sorting, and packaging proteins and lipids for secretion or delivery to other organelles, and does not play a role in light response regulation.

Conclusion:

Option: A, as the most accurate and relevant option, stands out for its direct involvement in light response regulation in plants, clearly differentiating it from the other options. Thus, Phytochrome is the correct choice.

ASRB NET Seed Science Mock Test - 2 - Question 14
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Alfalfa of the tropics is?
Detailed Solution for ASRB NET Seed Science Mock Test - 2 - Question 14

The correct answer is C. Desmodium

Desmodium, commonly known as the alfalfa of the tropics, is a high-quality legume that flourishes in tropical and subtropical regions. It is valued in pasture systems due to its ability to fix nitrogen, enhancing soil fertility, and providing nutritious forage for livestock.

Details on Other Options:

  • A: This option is incorrect as Stylo is a legume but is not specifically recognized as the alfalfa of the tropics and does not have the same level of forage quality as Desmodium.
  • B: Cumbu napier is a hybrid grass used for fodder but does not possess the leguminous properties or nitrogen-fixing capabilities that characterize Desmodium.
  • D: Sorghum is a cereal grain primarily grown for its seeds and is not classified as a legume, making it unsuitable as a tropical alfalfa substitute.

Conclusion:

The C, Desmodium, is the most accurate and relevant option due to its classification as a leguminous forage plant that enhances soil fertility, distinguishing it from the other options. Thus, Desmodium is the correct choice.

ASRB NET Seed Science Mock Test - 2 - Question 15
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Musty odour and dust is the symptoms of?
Detailed Solution for ASRB NET Seed Science Mock Test - 2 - Question 15

The correct answer is D. Mites

Mite infestations in stored goods are characterized by a musty smell and dust accumulation, which arise from their feeding habits and excretions. This distinctive odor and the presence of fine particles serve as key indicators of their activity in stored products.

Details on Other Options:

  • A: This option is incorrect because red flour beetles typically cause damage to flour and grain products, but they do not specifically produce a musty odour or dust like mites do.
  • B: This option is incorrect as rice weevils affect rice and grains but are not associated with a musty smell or dust, which are more indicative of mite activity.
  • C: This option is incorrect since pulse beetles damage pulses and legumes, but their infestation does not usually result in a musty odour or dust accumulation.

Conclusion:

The D, as the most accurate and relevant option, stands out for its association with the musty odour and dust, clearly differentiating it from the other options. Thus, Mites is the correct choice.

ASRB NET Seed Science Mock Test - 2 - Question 16
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Which part of the flower serves as its reproductive part?
Detailed Solution for ASRB NET Seed Science Mock Test - 2 - Question 16

The correct answer is C. Flower

A flower is the reproductive organ of angiosperms, containing essential structures like sepals, petals, stamens, and pistils that play critical roles in reproduction. These components work together to facilitate processes such as pollination and fertilization, making the flower central to the plant's reproductive cycle.

Details on Other Options:

  • A: This option is incorrect because the stem primarily supports the plant and transports nutrients and water, but does not participate in reproduction.
  • B: This option is incorrect as leaves are mainly involved in photosynthesis and do not have a role in the reproductive process of the plant.
  • D: This option is incorrect since the root's main function is to anchor the plant and absorb water and minerals, rather than to facilitate reproduction.

Conclusion:

Option: C, as the most accurate and relevant option, stands out for its direct role in reproduction, clearly differentiating it from the other options. Thus, Flower is the correct choice.

ASRB NET Seed Science Mock Test - 2 - Question 17
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What is the composition of the pollen wall?
Detailed Solution for ASRB NET Seed Science Mock Test - 2 - Question 17

The correct answer is B. Sporopollenin

The pollen wall primarily consists of sporopollenin, a robust polymer that plays a crucial role in safeguarding pollen grains from dehydration, high temperatures, and various environmental challenges. This unique composition is essential for the survival and dispersal of plant species.

Details on Other Options:

  • A: This option is incorrect because cellulose is a polysaccharide that primarily forms the cell walls of plants, not specifically the pollen wall.
  • C: This option is incorrect since lignin is a complex organic polymer found in the cell walls of many plants, providing rigidity and resistance but not part of the pollen wall structure.
  • D: This option is incorrect as chitin is a structural component found in the exoskeletons of arthropods and fungi, not in pollen walls.

Conclusion:

Option: B, as the most accurate and relevant option, stands out for its specific role in the composition of the pollen wall, clearly differentiating it from the other options. Thus, Sporopollenin is the correct choice.

ASRB NET Seed Science Mock Test - 2 - Question 18
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Which type of pollination occurs within the same flower or between flowers of the same plant?
Detailed Solution for ASRB NET Seed Science Mock Test - 2 - Question 18

The correct answer is A. Autogamy

Autogamy is the process of self-pollination, where pollen from the anther is transferred to the stigma of the same flower or to another flower on the same plant. This mechanism ensures that fertilization can occur without the need for pollen from a different plant, which can be advantageous in stable environments where the plant is well-adapted.

Details on Other Options:

  • B: This option is incorrect because allogamy involves cross-pollination, where pollen is transferred between different plants, promoting genetic diversity.
  • C: This option is incorrect as geitonogamy refers to pollination between different flowers of the same plant but does not involve the same flower, which is a key aspect of autogamy.
  • D: This option is incorrect since dichogamy is a condition where the male and female reproductive organs of a flower mature at different times, which can prevent self-pollination.

Conclusion:

The A, as the most accurate and relevant option, stands out for its definition of self-pollination within the same flower or between flowers of the same plant, clearly differentiating it from the other options. Thus, Autogamy is the correct choice.

ASRB NET Seed Science Mock Test - 2 - Question 19
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Protogyny is a condition where:
Detailed Solution for ASRB NET Seed Science Mock Test - 2 - Question 19

The correct answer is B. Pistil matures before anthers

Protogyny refers to the phenomenon where the pistil, which is the female reproductive part of a flower, matures prior to the anthers, the male reproductive parts. This timing difference helps to avoid self-pollination, thereby encouraging cross-pollination, which is beneficial for genetic diversity in plant populations.

Details on Other Options:

  • A: This option is incorrect because it describes protandry, where anthers mature before the pistil, allowing for self-pollination, which is the opposite of protogyny.
  • C: This option is incorrect since unisexual flowers can exist independently of protogyny, as they may have either male or female reproductive structures but do not necessarily indicate the maturation sequence of these parts.
  • D: This option is incorrect because sterile pollen does not relate to the maturation timing of reproductive organs but rather refers to pollen that cannot fertilize ovules, which is unrelated to the concept of protogyny.

Conclusion:

The B, as the most accurate and relevant option, stands out for its clear definition of protogyny, distinguishing it from the other options. Thus, Pistil matures before anthers is the correct choice.

ASRB NET Seed Science Mock Test - 2 - Question 20
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What is the minimum isolation distance required for foundation seed production of paddy from fields of other varieties?
Detailed Solution for ASRB NET Seed Science Mock Test - 2 - Question 20

The correct answer is A. 2 meters

To ensure the purity of foundation seed production for paddy, it is essential to maintain a minimum isolation distance of 2 meters from fields of other varieties. This distance helps prevent cross-pollination, which can compromise the genetic integrity of the seeds.

Details on Other Options:

  • B: This option is incorrect because a 3-meter distance is more than necessary for maintaining varietal purity, making it an excessive requirement for foundation seed production.
  • C: This option is incorrect as a 1-meter distance is insufficient to prevent cross-pollination, which could lead to contamination of the seed variety.
  • D: This option is incorrect since a 5-meter distance exceeds the needed isolation, which is not practical for foundation seed production.

Conclusion:

The A option, requiring a 2-meter distance, is the most accurate and relevant choice, as it effectively balances the need for varietal purity with practical implementation. Thus, 2 meters is the correct choice.

ASRB NET Seed Science Mock Test - 2 - Question 21
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What is the required isolation distance for wheat seed fields from fields of other varieties to maintain purity?
Detailed Solution for ASRB NET Seed Science Mock Test - 2 - Question 21

The correct answer is B. 3 meters

To maintain the purity of wheat seed fields, it is essential to have a minimum isolation distance of 3 meters from other varieties. This distance helps to prevent cross-pollination and ensures that the genetic integrity of the wheat variety is preserved.

Details on Other Options:

  • A: This option is incorrect because a distance of 150 meters is excessive for wheat seed isolation, as it far exceeds the necessary requirement for preventing cross-contamination.
  • C: This option is incorrect since a 10-meter distance is still too large compared to the established minimum requirement of 3 meters for maintaining varietal purity.
  • D: This option is incorrect as a 50-meter distance is also unnecessarily high, given that 3 meters is sufficient to ensure the integrity of wheat seed fields.

Conclusion:

Option: B, as the most accurate and relevant option, stands out for its alignment with the established guidelines for wheat seed isolation, clearly differentiating it from the other options. Thus, 3 meters is the correct choice.

ASRB NET Seed Science Mock Test - 2 - Question 22
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Which equipment is designed to separate seeds based on density or specific gravity?
Detailed Solution for ASRB NET Seed Science Mock Test - 2 - Question 22

The correct answer is A. Gravity separator or Destoner

The Gravity separator, also known as a Destoner, is specifically engineered to separate seeds according to their density or specific gravity. This equipment effectively removes damaged or inferior seeds, including those that are insect-infested or deteriorated, along with stones, ensuring that only high-quality seeds are retained for further processing.

Details on Other Options:

  • B: This option is incorrect because an Electrostatic separator is primarily used to separate materials based on their electrical conductivity rather than their density or specific gravity.
  • C: This option is incorrect as a Spiral separator is designed to separate materials based on size and shape, not specifically on density or specific gravity.
  • D: This option is incorrect since a Roll mill is utilized for grinding and milling materials, rather than for separating seeds based on density.

Conclusion:

Option: A, as the most accurate and relevant option, stands out for its specific function in seed separation based on density, clearly differentiating it from the other options. Thus, Gravity separator or Destoner is the correct choice.

ASRB NET Seed Science Mock Test - 2 - Question 23
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Which inflorescence type consists of numerous flowers along a single elongated stem?
Detailed Solution for ASRB NET Seed Science Mock Test - 2 - Question 23

The correct answer is B. Spike

A spike is a type of inflorescence characterized by numerous flowers that are attached directly to a single elongated stem, without any stalks. This arrangement allows the flowers to be closely spaced, making it distinct from other types of inflorescences where flowers may be on separate stalks or branches.

Details on Other Options:

  • A: This option is incorrect because an umbel consists of flowers that arise from a common point, resembling an umbrella shape, rather than being arranged along a single stem.
  • C: This option is incorrect as a raceme features flowers attached by short stalks along a central stem, which differentiates it from the spike where flowers are directly attached.
  • D: This option is incorrect since a panicle is a branched cluster of flowers, where the flowers are on stalks that extend from the main stem, unlike the spike's direct attachment.

Conclusion:

Option: B, as the most accurate and relevant option, stands out for its unique arrangement of flowers directly on an elongated stem, clearly differentiating it from the other types. Thus, Spike is the correct choice.

ASRB NET Seed Science Mock Test - 2 - Question 24
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Which of the following is NOT a self-pollinated crop?
Detailed Solution for ASRB NET Seed Science Mock Test - 2 - Question 24

The correct answer is C. Papaya

Papaya is classified as a cross-pollinated crop, meaning it requires pollen from another plant for fertilization, unlike self-pollinated crops such as wheat, rice, and soybean, which can fertilize themselves. This characteristic of papaya makes it distinct in its reproductive process.

Details on Other Options:

  • A: This option is incorrect because wheat is a self-pollinated crop, allowing it to fertilize itself without the need for pollen from other plants.
  • B: This option is incorrect as rice is also a self-pollinated crop, which means it can produce seeds without external pollen sources.
  • D: This option is incorrect since soybean is a self-pollinated crop that can effectively fertilize itself, ensuring seed production without reliance on cross-pollination.

Conclusion:

The C, as the most accurate and relevant option, stands out for its classification as a cross-pollinated crop, clearly differentiating it from the other self-pollinated options. Thus, Papaya is the correct choice.

ASRB NET Seed Science Mock Test - 2 - Question 25
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How many field inspections are minimum required for Hybrid Sorghum?
Detailed Solution for ASRB NET Seed Science Mock Test - 2 - Question 25

The correct answer is C. 4

Hybrid Sorghum necessitates at least 4 field inspections to ensure optimal growth and management. These inspections are crucial for monitoring plant health, assessing environmental conditions, and implementing necessary agronomic practices, thereby maximizing yield potential.

Details on Other Options:

  • A: This option is incorrect because 2 inspections are insufficient for thorough monitoring of Hybrid Sorghum, potentially leading to unaddressed issues affecting crop performance.
  • B: This option is incorrect as 3 inspections do not provide adequate oversight for the complexities involved in cultivating Hybrid Sorghum, risking lower yields.
  • D: This option is incorrect since 5 inspections may be excessive, potentially leading to unnecessary resource allocation without significant benefits over the required 4 inspections.

Conclusion:

The C, as the most accurate and relevant option, stands out for its alignment with the best agricultural practices for Hybrid Sorghum, clearly differentiating it from the other options. Thus, 4 is the correct choice.

ASRB NET Seed Science Mock Test - 2 - Question 26
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How many counts are required for a field area of 16-20 acres?
Detailed Solution for ASRB NET Seed Science Mock Test - 2 - Question 26

The correct answer is C. 8

To determine the number of counts needed for a field area ranging from 16 to 20 acres, it is established that 8 counts are necessary. This requirement ensures accurate data collection and analysis for agricultural assessments within this specific area range.

Details on Other Options:

  • A: This option is incorrect because 6 counts would not provide sufficient data for effective analysis in a field area of 16-20 acres.
  • B: This option is incorrect as 7 counts are inadequate for achieving the desired accuracy in measurements for the specified area.
  • D: This option is incorrect since 9 counts exceed the necessary requirement, potentially leading to unnecessary resource expenditure without additional benefit.

Conclusion:

The C, as the most accurate and relevant option, stands out for its precise alignment with the requirements for a field area of 16-20 acres, clearly differentiating it from the other options. Thus, 8 is the correct choice.

ASRB NET Seed Science Mock Test - 2 - Question 27
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Which crop has an objectionable weed plant known as Mexican prickly poppy?
Detailed Solution for ASRB NET Seed Science Mock Test - 2 - Question 27

The correct answer is A. Rape, mustard

The Mexican prickly poppy, scientifically known as Argemone mexicana, is considered a problematic weed primarily associated with the cultivation of rape and mustard crops. This weed can negatively impact crop growth and yield by competing for nutrients, water, and light, making it a significant concern for farmers growing these crops.

Details on Other Options:

  • B: This option is incorrect because lucerne (alfalfa) is not commonly associated with Mexican prickly poppy, which primarily affects rape and mustard crops.
  • C: This option is incorrect as green gram is not notably impacted by Mexican prickly poppy, which prefers the conditions found in rape and mustard cultivation.
  • D: This option is incorrect since sesame does not typically face issues with Mexican prickly poppy, making it less relevant in this context.

Conclusion:

Option: A, as the most accurate and relevant option, stands out for its direct association with the Mexican prickly poppy weed, clearly differentiating it from the other options. Thus, Rape, mustard is the correct choice.

ASRB NET Seed Science Mock Test - 2 - Question 28
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What is the required minimum pure seed percentage for Foundation class of Indian Rapeseed & Mustard seeds?
Detailed Solution for ASRB NET Seed Science Mock Test - 2 - Question 28

The correct answer is C. 97.00%

The minimum pure seed percentage required for the Foundation class of Indian Rapeseed and Mustard seeds is 97.0%. This standard is crucial for maintaining seed quality and ensuring optimal agricultural performance.

Details on Other Options:

  • A: This option is incorrect because a 95.00% pure seed percentage is below the required standard for Foundation class seeds, which could compromise seed quality.
  • B: This option is incorrect as 96.00% does not meet the minimum requirement for Foundation class seeds, which is set to ensure the highest quality.
  • D: This option is incorrect since 98.00% exceeds the minimum standard, although it does not meet the requirement for Foundation class seeds that is specifically 97.0%.

Conclusion:

Option: C, as the most accurate and relevant option, stands out for its alignment with the established standard for seed purity, clearly differentiating it from the other options. Thus, 97.00% is the correct choice.

ASRB NET Seed Science Mock Test - 2 - Question 29
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In Sunflower-Hybrid seed production, what is the maximum percentage of pollen shedding heads in seed parent allowed for Foundation class during flowering?
Detailed Solution for ASRB NET Seed Science Mock Test - 2 - Question 29

The correct answer is B. 0.50%

In Foundation class sunflower hybrid seed production, the permissible limit for pollen-shedding heads in the seed parent during the flowering stage is 0.50%. This threshold is crucial to maintain the purity and quality of the hybrid seeds, ensuring that the genetic integrity is preserved while minimizing unwanted cross-pollination.

Details on Other Options:

  • A: This option is incorrect because a limit of 0.20% is too stringent for Foundation class seeds, which allows for a slightly higher percentage to ensure practical seed production.
  • C: This option is incorrect as a 1.00% limit exceeds the acceptable threshold for Foundation class seeds, which could compromise seed quality and purity.
  • D: This option is incorrect since a 1.50% allowance is significantly higher than the established limit for Foundation class seeds, risking genetic contamination.

Conclusion:

The B option, being the most accurate and relevant, stands out for its alignment with the established guidelines for Foundation class sunflower seed production. Thus, 0.50% is the correct choice.

ASRB NET Seed Science Mock Test - 2 - Question 30
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Reverse grading in seed processing is used to remove:
Detailed Solution for ASRB NET Seed Science Mock Test - 2 - Question 30

The correct answer is C. Larger impurities than the required seed size

Reverse grading is a technique used in seed processing to eliminate larger impurities that exceed the desired seed size. This method ensures that only seeds of the appropriate size are kept, which is crucial for maintaining seed quality and optimizing planting efficiency.

Details on Other Options:

  • A: This option is incorrect because it suggests removing smaller seeds and impurities, which is not the focus of reverse grading, as this method specifically targets larger impurities.
  • B: This option is incorrect since it refers to lighter weight impurities, which may not necessarily be larger than the required seed size, and reverse grading does not specifically address weight.
  • D: This option is incorrect as it involves removing impurities based on color differentiation, which is a different sorting technique and not related to the size-focused approach of reverse grading.

Conclusion:

Option: C, as the most accurate and relevant option, stands out for its specific focus on removing larger impurities than the required seed size, clearly differentiating it from the other options. Thus, Larger impurities than the required seed size is the correct choice.

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