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ASRB NET Seed Science Mock Test - 3 - Agriculture Exams MCQ


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30 Questions MCQ Test - ASRB NET Seed Science Mock Test - 3

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ASRB NET Seed Science Mock Test - 3 - Question 1

Which of the following is the first state to establish seed certification agency as an autonomous body?

Detailed Solution for ASRB NET Seed Science Mock Test - 3 - Question 1

The correct answer is D. Karnataka

Karnataka was the pioneer state in India to set up a Seed Certification Agency as an independent entity in 1974. Although Maharashtra established the first official Seed Certification Agency in 1970 within its Department of Agriculture, it was Karnataka that took the significant step of making this agency autonomous, which enhanced its operational efficiency and effectiveness in seed quality assurance.

Details on Other Options:

  • A: This option is incorrect because Kerala did not establish the first autonomous Seed Certification Agency; it was Karnataka that achieved this distinction.
  • B: This option is incorrect as Orissa also did not lead in creating an autonomous Seed Certification Agency, which was specifically done by Karnataka.
  • C: This option is incorrect since Maharashtra's Seed Certification Agency, although the first to be established, remained under the Department of Agriculture and was not autonomous like Karnataka's agency.

Conclusion:

Option: D, as the most accurate and relevant option, stands out for its establishment of the Seed Certification Agency as an autonomous body, clearly differentiating it from the other options. Thus, Karnataka is the correct choice.

ASRB NET Seed Science Mock Test - 3 - Question 2

According to Harrington’s thumb rule, for every ________% decrease in seed moisture content, the life of the seed doubles.

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

The correct answer is C. 1%

According to Harrington's thumb rule, a reduction of 1% in seed moisture content results in the doubling of seed life. This principle is particularly relevant for moisture levels ranging from 5% to 14%. It highlights the significant impact that even small changes in moisture can have on seed longevity.

Details on Other Options:

  • A: This option is incorrect because a 10% decrease in moisture does not correlate with the doubling of seed life; the correct figure is 1%.
  • B: This option is incorrect as a 5% decrease in moisture content does not align with Harrington's rule, which specifically states that the life doubles with a 1% decrease.
  • D: This option is incorrect since a 2% decrease in moisture content does not match the specified doubling effect, which is strictly tied to a 1% reduction.

Conclusion:

Option: C, as the most accurate and relevant option, stands out for its precise alignment with Harrington's rule regarding seed moisture content, clearly differentiating it from the other options. Thus, 1% is the correct choice.

ASRB NET Seed Science Mock Test - 3 - Question 3

The percentage of oryzenin in rice is?

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

The correct answer is D. 80

Oryzenin is a significant storage protein in rice, constituting about 80-90% of the total protein content in rice grains. This high percentage highlights oryzenin's crucial role in the nutritional profile of rice, making it an essential component for both human consumption and agricultural value.

Details on Other Options:

  • A: This option is incorrect because 46% underestimates the actual percentage of oryzenin in rice, which is much higher.
  • B: This option is incorrect as 55% does not accurately reflect the substantial presence of oryzenin in rice grains.
  • C: This option is incorrect since 56% is still lower than the actual range of 80-90% for oryzenin in rice.

Conclusion:

Option: D, as the most accurate and relevant option, stands out for its correct representation of oryzenin's percentage in rice, clearly differentiating it from the other options. Thus, 80 is the correct choice.

ASRB NET Seed Science Mock Test - 3 - Question 4
The tolerance limit of off-types for establishment of uniformity in self-pollinated crop for DUS testing is __________
Detailed Solution for ASRB NET Seed Science Mock Test - 3 - Question 4

The correct answer is C. 1.00%

In DUS testing, which assesses the distinctness, uniformity, and stability of new crop varieties, the tolerance limit for off-type plants in self-pollinated crops is set at 1%. This standard ensures that the new variety is sufficiently uniform compared to existing varieties, maintaining consistent traits across generations.

Details on Other Options:

  • A: This option is incorrect because a tolerance limit of 0.50% is too low for establishing the necessary uniformity in self-pollinated crops, where a higher threshold is required to account for natural variation.
  • B: This option is incorrect as a 1.50% tolerance limit exceeds the acceptable threshold for off-types, which could compromise the uniformity of the crop variety being tested.
  • D: This option is incorrect since a tolerance limit of 2.00% is significantly higher than the established 1% standard, which could lead to a lack of uniformity and stability in the variety.

Conclusion:

Option: C, as the most accurate and relevant option, stands out for its alignment with the established tolerance limit for uniformity in self-pollinated crops, clearly differentiating it from the other options. Thus, 1.00% is the correct choice.

ASRB NET Seed Science Mock Test - 3 - Question 5
If rice contains more of mealy endosperm, this type is amenable for-
Detailed Solution for ASRB NET Seed Science Mock Test - 3 - Question 5

The correct answer is D. High breakage in milling

Rice with a higher presence of mealy endosperm is more prone to brittleness, leading to increased breakage during milling. This brittleness negatively impacts the efficiency of the milling process and compromises the quality of the final rice product. Thus, a greater amount of mealy endosperm correlates with a higher breakage rate in milling.

Details on Other Options:

  • A: This option is incorrect because a high content of mealy endosperm results in more breakage, not less, contradicting the notion of "no breakage" during milling.
  • B: This option is incorrect as well; rice with more mealy endosperm is actually more likely to break, leading to a higher breakage rate rather than less.
  • C: This option is not suitable since rice with a high mealy endosperm content tends to be sticky rather than non-sticky, further complicating the milling process.

Conclusion:

The D, as the most accurate and relevant option, clearly indicates the relationship between mealy endosperm and breakage during milling, distinguishing it from the other options. Thus, High breakage in milling is the correct choice.

ASRB NET Seed Science Mock Test - 3 - Question 6
For which crop the specific gravity separator separated seeds are in positive association with vigour _________.
Detailed Solution for ASRB NET Seed Science Mock Test - 3 - Question 6

The correct answer is A. Sunflower

The specific gravity separator sorts seeds according to their weight and density. For sunflowers, the seeds that are separated using this method show a positive correlation with vigor. Heavier and denser seeds, which settle at a specific gravity, generally demonstrate better vigor. By employing specific gravity separation in sunflower seed processing, seeds with higher germination potential and improved overall quality are selected, leading to enhanced crop performance.

Details on Other Options:

  • B: This option is incorrect because, while cotton seeds can be separated by weight, they do not exhibit the same positive association with vigor as sunflower seeds do when using a specific gravity separator.
  • C: This option is incorrect since casuarina seeds do not show a significant relationship between specific gravity separation and seed vigor, unlike sunflowers.
  • D: This option is incorrect as cashew nut seeds separated by specific gravity do not demonstrate a positive association with vigor, making them less relevant in this context.

Conclusion:

Option: A, as the most accurate and relevant option, stands out for its clear association between specific gravity separation and seed vigor in sunflowers, differentiating it from the other options. Thus, Sunflower is the correct choice.

ASRB NET Seed Science Mock Test - 3 - Question 7
Which of the following crop seeds has a tendency of sweating?
Detailed Solution for ASRB NET Seed Science Mock Test - 3 - Question 7

The correct answer is B. Orchid

Orchid seeds are known for a process called "sweating." Unlike most seeds, orchid seeds do not contain endosperm, which provides nutrients for germination. Instead, they rely on a symbiotic relationship with specific fungi to obtain necessary nutrients. The "sweating" process involves the fungi releasing vital nutrients and metabolites, which are crucial for the successful germination and initial growth of orchid seeds.

Details on Other Options:

  • A: This option is incorrect because rose seeds do not undergo sweating. They typically have a nutrient supply within their endosperm, allowing them to germinate without the need for fungal assistance.
  • C: This option is incorrect as dahlia seeds also contain endosperm, which provides the necessary nutrients for germination, making sweating unnecessary.
  • D: This option is incorrect since petunia seeds, like the others mentioned, have endosperm and do not rely on the sweating process for germination.

Conclusion:

The B, as the most accurate and relevant option, is distinguished by its unique germination requirements that involve a symbiotic relationship with fungi, setting it apart from the other seeds. Thus, Orchid is the correct choice.

ASRB NET Seed Science Mock Test - 3 - Question 8
Oblong sieve is used for grading ________.
Detailed Solution for ASRB NET Seed Science Mock Test - 3 - Question 8

The correct answer is A. Paddy

An oblong sieve is primarily used for grading paddy, a variety of rice. This sieve is engineered to sort grains by size and shape, which is crucial for achieving consistency in the grading process. Grading paddy is vital in rice processing as it helps classify grains for different uses, including seed quality and market grades.

Details on Other Options:

  • B: This option is incorrect because sorghum typically requires different grading methods, often using round sieves that better accommodate its grain shape.
  • C: This option is incorrect as maize is usually graded with flat or perforated sieves, which are more suitable for its larger and bulkier kernels.
  • D: This option is incorrect since sunflower seeds are generally graded using screens designed for their specific size and shape, which differ from the oblong sieve's design.

Conclusion:

The A, as the most accurate and relevant option, stands out for its specific application in grading paddy, clearly differentiating it from the other options. Thus, Paddy is the correct choice.

ASRB NET Seed Science Mock Test - 3 - Question 9
What is the top screen size for castor seed processing?
Detailed Solution for ASRB NET Seed Science Mock Test - 3 - Question 9

The correct answer is B. 24/64

The top screen size for processing castor seeds is essential for effectively sorting seeds according to their dimensions. The designation 24/64" indicates that the screens utilized in the processing machinery feature openings that measure 24/64 inches, which is optimal for this purpose.

Details on Other Options:

  • A: This option is incorrect because a screen size of 20/64" is too small for efficiently processing castor seeds, potentially leading to inadequate sorting.
  • C: This option is incorrect as a screen size of 30/64" is larger than necessary, which may result in the loss of smaller seeds during processing.
  • D: This option is incorrect since a screen size of 34/64" is excessively large, likely allowing too many small seeds to pass through, compromising the quality of the sorting process.

Conclusion:

The B, as the most accurate and relevant option, stands out for its suitability in castor seed processing, clearly differentiating it from the other options. Thus, 24/64 is the correct choice.

ASRB NET Seed Science Mock Test - 3 - Question 10
The use of Rhizobium in seed pelleting is known as?
Detailed Solution for ASRB NET Seed Science Mock Test - 3 - Question 10

The correct answer is A. Inoculant pelleting

Inoculant pelleting refers to the process of coating seeds with Rhizobium, a type of beneficial bacteria that aids in nitrogen fixation. This method enhances the symbiotic association between leguminous plants and Rhizobium, leading to improved nitrogen levels in the soil, which is crucial for plant growth and development.

Details on Other Options:

  • B: This option is incorrect because herbicide pelleting involves applying herbicides to seeds to control weed growth, which does not relate to the use of Rhizobium.
  • C: This option is incorrect as protective pelleting focuses on shielding seeds from pests and diseases, rather than enhancing nitrogen fixation through Rhizobium.
  • D: This option is incorrect since organic pelleting typically refers to the use of organic materials in seed coatings, which does not specifically involve Rhizobium or its nitrogen-fixing capabilities.

Conclusion:

The A, as the most accurate and relevant option, stands out for its focus on enhancing the beneficial relationship between legumes and Rhizobium, clearly differentiating it from the other options. Thus, Inoculant pelleting is the correct choice.

ASRB NET Seed Science Mock Test - 3 - Question 11
The system developed in India by integrating the rights of breeder, farmers and village communities is-
Detailed Solution for ASRB NET Seed Science Mock Test - 3 - Question 11

The correct answer is D. PPV&FRA

The Protection of Plant Varieties and Farmers' Rights Act (PPV&FRA) is a legislative framework in India that harmonizes the rights of breeders, farmers, and local communities. It aims to safeguard the interests of plant breeders while also ensuring that farmers receive fair compensation for their role in conserving plant genetic resources. This act promotes equitable benefit-sharing among all stakeholders in agriculture, thereby fostering a sustainable agricultural environment.

Details on Other Options:

  • A: This option is incorrect because TRIPS (Trade-Related Aspects of Intellectual Property Rights) primarily addresses intellectual property rights on a global scale, without specifically focusing on the rights of farmers or local communities.
  • B: This option is incorrect as the CBD (Convention on Biological Diversity) is an international treaty aimed at conserving biological diversity, but it does not specifically integrate the rights of breeders and farmers as PPV&FRA does.
  • C: This option is incorrect because sui generis refers to a unique system of protection for plant varieties, but it does not directly address the integration of rights among breeders, farmers, and communities in the same comprehensive manner as PPV&FRA.

Conclusion:

The D, as the most accurate and relevant option, stands out for its comprehensive approach to integrating the rights of various stakeholders in agriculture, clearly differentiating it from the other options. Thus, PPV&FRA is the correct choice.

ASRB NET Seed Science Mock Test - 3 - Question 12
Seed Control Order, 1983 _______________.
Detailed Solution for ASRB NET Seed Science Mock Test - 3 - Question 12

The correct answer is A. Promotes export and import of seeds

The Seed Control Order, 1983 is designed to facilitate the export and import of seeds, ensuring that they meet specific quality standards. This regulation aims to promote agricultural development by ensuring that farmers have access to high-quality seeds from both domestic and international sources, thereby enhancing crop productivity and sustainability.

Details on Other Options:

  • B: This option is incorrect because the order does not impose restrictions on the export and import of seeds; instead, it aims to promote these activities under regulated conditions.
  • C: This option is misleading as it implies a neutral stance on export and import, while the order actively encourages these processes to improve seed quality and availability.
  • D: This option is less appropriate because, although the order regulates seed quality, its primary purpose is to promote rather than simply regulate the export and import of seeds.

Conclusion:

Option: A, as the most accurate and relevant option, stands out for its emphasis on promoting seed trade, clearly differentiating it from the other options. Thus, Promotes export and import of seeds is the correct choice.

ASRB NET Seed Science Mock Test - 3 - Question 13
The maximum area could be registered for seed certification is-
Detailed Solution for ASRB NET Seed Science Mock Test - 3 - Question 13

The correct answer is D. 10 ha

The maximum area eligible for seed certification is 10 hectares, as stated in option (D). Seed certification is crucial for ensuring that seeds conform to quality standards, and this area limit facilitates effective management of the certification process. By capping the area, it allows for thorough inspections and quality assurance, ultimately supporting the production of high-quality seeds for agricultural use.

Details on Other Options:

  • A: This option is incorrect as 4 acres (approximately 1.6 hectares) is below the maximum area limit set for seed certification, which is 10 hectares.
  • B: This option is also incorrect because 5 acres (about 2 hectares) is less than the maximum allowable area for certification, which is 10 hectares.
  • C: This option is incorrect since 4 hectares is still less than the maximum area of 10 hectares permitted for seed certification.

Conclusion:

Option: D, as the most accurate and relevant option, stands out for its representation of the maximum area permitted for seed certification, clearly differentiating it from the other options. Thus, 10 ha is the correct choice.

ASRB NET Seed Science Mock Test - 3 - Question 14
Anemophily indicates:
Detailed Solution for ASRB NET Seed Science Mock Test - 3 - Question 14

The correct answer is B. Pollination by wind

Anemophily specifically denotes the process of pollination that occurs via wind. In plants that utilize anemophily, pollen is carried from the male parts (anthers) to the female parts (stigma) through the movement of air, facilitating fertilization without the need for animal pollinators.

Details on Other Options:

  • A: This option is incorrect because it refers to pollination that occurs in aquatic environments, which is not related to anemophily.
  • C: This option is incorrect as it describes pollination facilitated by insects, which is known as entomophily, contrasting with wind-based pollination.
  • D: This option is incorrect since it pertains to pollination carried out by birds, known as ornithophily, rather than by wind.

Conclusion:

The B, as the most accurate and relevant option, stands out for its clear definition of wind-based pollination, effectively distinguishing it from the other methods of pollination. Thus, Pollination by wind is the correct choice.

ASRB NET Seed Science Mock Test - 3 - Question 15
The protein accumulated in the embryo during the later stages of seed development
Detailed Solution for ASRB NET Seed Science Mock Test - 3 - Question 15

The correct answer is A. LEA proteins

LEA (Late Embryogenesis Abundant) proteins accumulate in the embryo during the later stages of seed development. They are essential for safeguarding developing seeds against dehydration and environmental stressors, ensuring proper maturation and viability.

Details on Other Options:

  • B: Prolamines are storage proteins found mainly in cereal grains, but they do not specifically accumulate during the late stages of seed development like LEA proteins do.
  • C: Glutelins are another type of storage protein found in seeds, particularly in wheat and rice, but they are not classified as LEA proteins and do not serve the same protective role during late embryogenesis.
  • D: Zeatin is a type of cytokinin, a plant hormone that regulates cell division and growth, but it is not a protein and does not accumulate in the embryo during seed development.

Conclusion:

Option: A, as the most accurate and relevant option, stands out for its specific role in seed protection during late development, clearly differentiating it from the other options. Thus, LEA proteins is the correct choice.

ASRB NET Seed Science Mock Test - 3 - Question 16
The storage structure in seed is?
Detailed Solution for ASRB NET Seed Science Mock Test - 3 - Question 16

The correct answer is C. Endosperm

The endosperm is a vital tissue formed within the seeds of most flowering plants after fertilization. It encases the embryo and serves as a nutrient source, primarily supplying starch but may also include oils and proteins, essential for the seed's development.

Details on Other Options:

  • A: This option is incorrect because the embryo is the part of the seed that develops into the new plant, not a storage structure.
  • B: This option is incorrect as the seed coat is a protective layer around the seed, rather than a storage tissue.
  • D: This option is incorrect since the aleurone layer is involved in the process of seed germination and does not primarily function as a storage structure.

Conclusion:

Option: C, as the most accurate and relevant option, stands out for its role in providing essential nutrients to the developing plant, clearly differentiating it from the other options. Thus, Endosperm is the correct choice.

ASRB NET Seed Science Mock Test - 3 - Question 17
Which of the following triggers the breaking of seed dormancy?
Detailed Solution for ASRB NET Seed Science Mock Test - 3 - Question 17

The correct answer is A. Pfr

Pfr, the far-red light-absorbing form of phytochrome, plays a crucial role in breaking seed dormancy. Phytochromes are present in two interconvertible forms: Pr and Pfr. When seeds are exposed to light, Pr is converted to Pfr, which triggers biochemical processes that promote germination, effectively ending dormancy.

Details on Other Options:

  • B: This option is incorrect because Pr is the inactive form of phytochrome that does not initiate the breaking of seed dormancy; it must be converted to Pfr to have an effect.
  • C: This option is incorrect as cytochrome does not have a direct role in breaking seed dormancy; it is primarily involved in electron transport and energy production within cells.
  • D: This option is incorrect since chloroplasts are the sites of photosynthesis and do not directly trigger the breaking of seed dormancy; they are involved in the subsequent growth processes after germination.

Conclusion:

Option: A, as the most accurate and relevant option, stands out for its specific role in the light-induced processes that break seed dormancy. Thus, Pfr is the correct choice.

ASRB NET Seed Science Mock Test - 3 - Question 18
Apogamy is a process where the embryo originates from:
Detailed Solution for ASRB NET Seed Science Mock Test - 3 - Question 18

The correct answer is B. Either synergids or antipodal cells of the embryo sac

Apogamy refers to the formation of an embryo from cells other than the fertilized egg, specifically from either synergids or antipodal cells within the embryo sac. This process occurs without the typical fertilization, illustrating an alternative reproductive strategy in certain plants.

Details on Other Options:

  • A: This option is incorrect because it describes the standard process of embryogenesis where the embryo develops from a fertilized egg cell, which is not the case in apogamy.
  • C: This option is incorrect as stem cells are involved in various developmental processes but do not specifically relate to apogamy, which focuses on synergids or antipodal cells.
  • D: This option is incorrect since leaf tissues are not involved in the embryonic development process of apogamy, which specifically relates to certain cells in the embryo sac.

Conclusion:

Option: B, as the most accurate and relevant option, stands out for its specific identification of the cells involved in apogamy, clearly differentiating it from the other options. Thus, Either synergids or antipodal cells of the embryo sac is the correct choice.

ASRB NET Seed Science Mock Test - 3 - Question 19
What role do synergids play in fertilization?
Detailed Solution for ASRB NET Seed Science Mock Test - 3 - Question 19

The correct answer is B. They direct the sperm nucleus toward the egg cell.

Synergids play a crucial role in fertilization by guiding the sperm nucleus to the egg cell. They are specialized cells located near the egg in the ovule, and their primary function is to assist in the fertilization process by ensuring that the sperm reaches the egg efficiently, thereby facilitating successful fertilization.

Details on Other Options:

  • A: This option is incorrect because the pollen tube is produced by the pollen grain, not by synergids. The pollen tube is responsible for delivering sperm cells to the ovule.
  • C: This option is incorrect as the zygote is formed after fertilization when the sperm nucleus fuses with the egg cell, a process that synergids help facilitate but do not directly perform.
  • D: This option is incorrect since the secondary nucleus is formed from the fusion of two polar nuclei in the embryo sac, which is separate from the role of synergids in fertilization.

Conclusion:

The B, as the most accurate and relevant option, stands out for its clear description of the synergids' function in directing the sperm nucleus to the egg cell. Thus, they direct the sperm nucleus toward the egg cell is the correct choice.

ASRB NET Seed Science Mock Test - 3 - Question 20

What is the maximum moisture content allowed for maize seeds stored in vapour-proof containers?

Detailed Solution for ASRB NET Seed Science Mock Test - 3 - Question 20

The correct answer is B. 8.0%

For maize seeds stored in vapour-proof containers, the maximum permissible moisture content is 8.0%. This limit is crucial as it helps prevent fungal growth and degradation of the seeds, ensuring their viability and quality during storage.

Details on Other Options:

  • A: This option is incorrect because a moisture content of 6.0% is too low for optimal storage conditions, potentially leading to issues such as reduced seed viability.
  • C: This option is incorrect as a maximum moisture content of 10.0% increases the likelihood of fungal infestations and seed spoilage, which can compromise seed quality.
  • D: This option is incorrect since allowing 12.0% moisture content significantly raises the risk of mold and deterioration, making it unsuitable for long-term storage.

Conclusion:

Option: B, as the most accurate and relevant option, stands out for its balance in maintaining seed quality while minimizing risks associated with higher moisture levels. Thus, 8.0% is the correct choice.

ASRB NET Seed Science Mock Test - 3 - Question 21

What is the minimum germination percentage required for both Foundation and Certified seeds of Bengal gram?

Detailed Solution for ASRB NET Seed Science Mock Test - 3 - Question 21

The correct answer is C. 85%

For both Foundation and Certified seeds of Bengal gram, a minimum germination percentage of 85% is essential. This threshold guarantees that the seeds are viable, promoting effective crop establishment and healthy growth.

Details on Other Options:

  • A: This option is incorrect because a minimum of 75% germination does not meet the required standard for Foundation and Certified seeds, which may lead to lower crop yields.
  • B: This option is incorrect as an 80% germination rate is still below the necessary threshold, potentially compromising the viability of the seeds.
  • D: This option is incorrect since a 90% germination percentage exceeds the required minimum, making it unnecessary and possibly impractical for seed certification.

Conclusion:

Option: C, as the most accurate and relevant option, stands out for its alignment with the required minimum germination percentage for Bengal gram seeds, clearly differentiating it from the other options. Thus, 85% is the correct choice.

ASRB NET Seed Science Mock Test - 3 - Question 22
Which term describes the pistil type when carpels are fused together?
Detailed Solution for ASRB NET Seed Science Mock Test - 3 - Question 22

The correct answer is B. Syncarpous

Syncarpous describes a flower structure where the carpels, or pistils, are united. This fusion allows for more efficient reproduction as the carpels work together to form a single ovary, facilitating the development of seeds within a cohesive structure. In contrast, other terms refer to different arrangements of carpels, making syncarpous a distinct classification.

Details on Other Options:

  • A: This option is incorrect because apocarpous refers to flowers with separate, unfused carpels, which do not combine to form a single ovary.
  • C: This option is incorrect as monocarpic refers to plants that flower and set seeds once in their lifetime, not specifically related to the fusion of carpels.
  • D: This option is incorrect since polyandrous describes a condition where a flower has multiple stamens, which is unrelated to the fusion of carpels.

Conclusion:

The B, as the most accurate and relevant option, stands out for its definition relating specifically to the fusion of carpels in a flower, clearly differentiating it from the other options. Thus, Syncarpous is the correct choice.

ASRB NET Seed Science Mock Test - 3 - Question 23
The direct formation of an embryo from diploid ovule cells is known as:
Detailed Solution for ASRB NET Seed Science Mock Test - 3 - Question 23

The correct answer is D. Adventive embryony

Adventive embryony is the process where an embryo develops directly from diploid ovule cells, occurring outside the embryo sac. This method allows for the formation of embryos without the typical fertilization process, highlighting a unique reproductive strategy in certain plant species.

Details on Other Options:

  • A: Parthenogenesis is incorrect as it involves the development of an embryo from an unfertilized egg, not from diploid ovule cells.
  • B: Apogamy is not the right choice since it refers to the development of a sporophyte from a gametophyte without fertilization, differing from the direct formation from ovule cells.
  • C: Apospory is incorrect because it describes the formation of gametophytes from sporophyte tissue, rather than the direct formation of embryos from ovule cells.

Conclusion:

Option: D, as the most accurate and relevant option, stands out for its specific definition of embryo formation from diploid ovule cells outside the embryo sac, clearly differentiating it from the other options. Thus, Adventive embryony is the correct choice.

ASRB NET Seed Science Mock Test - 3 - Question 24
What does the State Seed Certification Agency do?
Detailed Solution for ASRB NET Seed Science Mock Test - 3 - Question 24

The correct answer is B. Certifies the seeds of any notified variety

The State Seed Certification Agency is responsible for verifying and certifying the quality of seeds that belong to any officially recognized variety. This certification ensures that the seeds meet specific standards, which is crucial for maintaining agricultural productivity and ensuring farmers receive quality planting materials.

Details on Other Options:

  • A: This option is incorrect because the agency does not certify food quality; its focus is solely on seed certification.
  • C: This option is incorrect as the agency does not regulate seed prices; its primary role is to certify seed quality, not to influence market pricing.
  • D: This option is incorrect since the agency does not promote seed exports; its main function is to ensure the quality of seeds within the country.

Conclusion:

Option: B, as the most accurate and relevant option, stands out for its specific focus on seed certification, clearly differentiating it from the other options. Thus, Certifies the seeds of any notified variety is the correct choice.

ASRB NET Seed Science Mock Test - 3 - Question 25
During which stage are the male parent rows verified to have been harvested separately?
Detailed Solution for ASRB NET Seed Science Mock Test - 3 - Question 25

The correct answer is D. Inspection during harvest

At the harvest stage, a crucial verification occurs to ensure that male parent rows are indeed harvested separately. This step is essential for maintaining the integrity of breeding programs, as it prevents cross-pollination and ensures that the genetic lines remain distinct.

Details on Other Options:

  • A: This option is incorrect because the pre-flowering stage focuses on plant development and does not involve verification of harvesting practices.
  • B: This option is incorrect as the flowering stage is primarily about pollination processes, not the separation of harvested rows.
  • C: This option is incorrect since the post-flowering and pre-harvest stage does not include the final verification of male parent row separation, which is specifically done during the harvest inspection.

Conclusion:

The D, as the most accurate and relevant option, stands out for its focus on the critical verification process during the harvest, clearly differentiating it from the other options. Thus, Inspection during harvest is the correct choice.

ASRB NET Seed Science Mock Test - 3 - Question 26
Which crop requires 4 field inspections and includes curd formation as a critical inspection point?
Detailed Solution for ASRB NET Seed Science Mock Test - 3 - Question 26

The correct answer is C. Cauliflower

Cauliflower necessitates four field inspections, with curd formation being a crucial stage in its development. This inspection process is vital to ensure optimal growth and quality of the crop, making it distinct among the options provided.

Details on Other Options:

  • A: This option is incorrect because carrots typically require fewer inspections focused on root development rather than curd formation.
  • B: This option is incorrect since cabbage does not prioritize curd formation and generally requires different inspection criteria.
  • D: This option is incorrect as onions do not involve curd formation and have a different set of inspection requirements related to bulb development.

Conclusion:

The C, as the most accurate and relevant option, stands out for its specific requirement for curd formation inspections, clearly differentiating it from the other options. Thus, Cauliflower is the correct choice.

ASRB NET Seed Science Mock Test - 3 - Question 27
For a field area of 11-15 acres, how many counts are required to assess the field standards?
Detailed Solution for ASRB NET Seed Science Mock Test - 3 - Question 27

The correct answer is C. 7 counts

To evaluate field standards for an area ranging from 11 to 15 acres, it is necessary to conduct 7 counts. This number ensures a reliable assessment of the field's quality and conditions, providing sufficient data for accurate analysis.

Details on Other Options:

  • A: This option is incorrect because 5 counts are insufficient to accurately assess the standards of a field of this size, potentially leading to unreliable results.
  • B: This option is incorrect as 6 counts do not provide enough coverage for a thorough evaluation of the field, which could overlook critical variations in field conditions.
  • D: This option is incorrect since 8 counts exceed the necessary amount for an area of 11-15 acres, making it an inefficient choice that could waste resources.

Conclusion:

The C, as the most accurate and relevant option, stands out for its adequacy in providing a comprehensive assessment within the specified area, clearly differentiating it from the other options. Thus, 7 counts is the correct choice.

ASRB NET Seed Science Mock Test - 3 - Question 28
For Castor seed production, what is the maximum permitted percentage of off-types for Foundation seeds?
Detailed Solution for ASRB NET Seed Science Mock Test - 3 - Question 28

The correct answer is B. 0.10%

For Foundation Castor seed production, the maximum allowable percentage of off-types is set at 0.10%. This standard is crucial for maintaining the varietal purity and quality of the seeds, which is essential for optimal crop performance and reliability in agricultural practices.

Details on Other Options:

  • A: This option is incorrect because a limit of 0.05% is too stringent for Foundation seeds, which require a slightly higher tolerance for off-types to accommodate natural variability.
  • C: This option is incorrect as a maximum of 0.20% exceeds the acceptable range for Foundation seeds, which could compromise seed quality and consistency.
  • D: This option is incorrect since a limit of 0.50% is excessively high for Foundation seeds, potentially leading to significant issues with varietal integrity.

Conclusion:

Option: B, as the most accurate and relevant option, stands out for its alignment with the standards necessary for maintaining seed quality, clearly differentiating it from the other options. Thus, 0.10% is the correct choice.

ASRB NET Seed Science Mock Test - 3 - Question 29
For Castor seed production, what is the required isolation distance from fields of the same variety not conforming to varietal purity requirements for certification for Certified seeds?
Detailed Solution for ASRB NET Seed Science Mock Test - 3 - Question 29

The correct answer is B. 300 meters

For the production of Certified Castor seeds, an isolation distance of 300 meters is necessary from fields of the same variety that do not meet the varietal purity standards for certification. This distance ensures that the seeds produced maintain their desired genetic integrity and quality, preventing cross-contamination from non-certified sources.

Details on Other Options:

  • A: This option is incorrect because an isolation distance of 200 meters is insufficient to prevent contamination from fields that do not meet certification standards.
  • C: This option is incorrect as 400 meters exceeds the required distance, which may be unnecessarily restrictive for effective seed production.
  • D: This option is incorrect since a distance of 600 meters is more than what is needed, potentially leading to inefficiencies in land use without additional benefits for seed purity.

Conclusion:

Option: B, as the most accurate and relevant option, stands out for its alignment with the necessary standards for seed certification, clearly differentiating it from the other options. Thus, 300 meters is the correct choice.

ASRB NET Seed Science Mock Test - 3 - Question 30
For seeds with a moisture content greater than 17%, what is the initial recommended drying method before exposure to heavy sun?
Detailed Solution for ASRB NET Seed Science Mock Test - 3 - Question 30

The correct answer is B. Drying in the shade or under light

For seeds that have a moisture content exceeding 17%, it is advisable to first dry them in the shade or under light conditions. This method helps reduce the moisture content to below 17% before they can be exposed to direct sunlight. This gradual drying process is crucial to prevent damage to the seeds while ensuring they are adequately dried.

Details on Other Options:

  • A: This option is incorrect because direct sunlight exposure can cause rapid drying, which may lead to seed damage and adversely affect their viability.
  • C: This option is not suitable as immediate mechanical drying can be too intense for seeds with high moisture content, risking their integrity and quality.
  • D: This option is inappropriate since using continuous flow dryers may also subject the seeds to excessive heat, which is not recommended for seeds with moisture levels above 17%.

Conclusion:

Option: B, as the most accurate and relevant choice, is distinguished by its gentle approach to drying seeds, ensuring their safety and quality. Thus, drying in the shade or under light is the correct method.

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