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SRMJEEE Biology Mock Test - 9 - JEE MCQ


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30 Questions MCQ Test SRMJEEE Subject Wise & Full Length Mock Tests 2025 - SRMJEEE Biology Mock Test - 9

SRMJEEE Biology Mock Test - 9 for JEE 2025 is part of SRMJEEE Subject Wise & Full Length Mock Tests 2025 preparation. The SRMJEEE Biology Mock Test - 9 questions and answers have been prepared according to the JEE exam syllabus.The SRMJEEE Biology Mock Test - 9 MCQs are made for JEE 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for SRMJEEE Biology Mock Test - 9 below.
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SRMJEEE Biology Mock Test - 9 - Question 1

In the C3, cycle for the fixation of every CO2 molecule, the reduction and regeneration steps require​

Detailed Solution for SRMJEEE Biology Mock Test - 9 - Question 1

 

In C3 cycle for the fixation of every carbon dioxide molecule, the reduction and regeneration of steps require around 3ATP & 2 NADPH2 molecules.
So, the correct option is '3 ATP and 2NADPH2'.

Topic in NCERT: Photosynthesis in higher plants

Line in NCERT: "hence for every co2 molecule entering the calvin cycle, 3 molecules of atp and 2 of nadph are required."

SRMJEEE Biology Mock Test - 9 - Question 2

Perisperm is a residual nucellus, which persists in some seeds. In which of the following plants it is found?

Detailed Solution for SRMJEEE Biology Mock Test - 9 - Question 2

In seeds of some plants like black pepper, remnants of nucellus is persistent. This residual, persistent nucellus is called perisperm.

SRMJEEE Biology Mock Test - 9 - Question 3

Which of the following is not an example of prey-predator relationship?

Detailed Solution for SRMJEEE Biology Mock Test - 9 - Question 3

Bacteria decompose the organic matter which is not really living. Hence, it cannot be considered as a prey predator relationship.

Topic in NCERT: Predation

Line in NCERT: "Predation is a very important process through which trophic energy transfer is facilitated and some predators help in controlling their prey populations."

SRMJEEE Biology Mock Test - 9 - Question 4

Given below is the diagram of female reproductive system of a frog marked with A, B, C, D, E and F. 

                  A,B,C,D),("Ovary","Urinogentical duct","Bidder's canal","Ovidsac"):

Ovary is represented by:

Detailed Solution for SRMJEEE Biology Mock Test - 9 - Question 4

Sections

SRMJEEE Biology Mock Test - 9 - Question 5

Bioactive molecule that is used as an immunosuppressive agent in organ-transplant patient obtained from Trichoderma polysporum is

Detailed Solution for SRMJEEE Biology Mock Test - 9 - Question 5

Cyclosporin A is used as an immunosuppressive agent in organ-transplant patient obtained from Trichoderma polysporum fungus.

SRMJEEE Biology Mock Test - 9 - Question 6

Example of artificial auxins are:

(a) IPA
(b) PAA
(c) NAA
(d) IAA
(e) 2, 4 - D

Detailed Solution for SRMJEEE Biology Mock Test - 9 - Question 6

 the answer will be (c) and (e).
Auxins (from Greek ‘auxein’ : to grow) was first isolated from human urine. The term ‘auxin’ is applied to the indole-3-acetic acid (IAA), and to other natural and synthetic compounds having certain growth regulating properties
Auxins like IAA and indole butyric acid (IBA) have been isolated from plants. NAA (naphthalene acetic acid) and 2, 4-D (2, 4-dichlorophenoxyacetic) are synthetic auxins. All these auxins have been used extensively in agricultural and horticultural practices.

SRMJEEE Biology Mock Test - 9 - Question 7

Which one of the following groups is called 'amphibians of plant kingdom'?

Detailed Solution for SRMJEEE Biology Mock Test - 9 - Question 7
  • Bryophytes include the various mosses and liverworts.
  • These are non-vascular embryophytes, characterized by the presence of an independent gametophyte and parasitic sporophyte.
  • Bryophytes commonly grow in moist, shaded areas in hills.
  • These are called amphibians of the plant Kingdom because, these can live in soil, but are dependent on water for sexual reproduction.
  • However, their sperms, known as antherozoids, are flagellate and require water to swim and reach the eggs in order to fertilize them. As a result, they require water for sexual reproduction.
  • The plant body of bryophytes is more differentiated than that of algae.
  • Ecological importance:
    • Some mosses provide food for herbaceous mammals, birds, and other animals.
    • Mosses along with lichens are the first organisms to colonize rocks. Hence, these help in biological succession.
    • Mosses form dense mats on the soil.
    • Marchantia has medicinal properties to cure lungs and liver infections. It also has anti-tumor properties.
SRMJEEE Biology Mock Test - 9 - Question 8

Q. Which of the following events occur during meiosis but not during mitosis?

a) Pairing of homologous chromosomes
b) Separation of sister chromatids
c) Crossing over between homologous chromosomes
d) Cytokinesis

Detailed Solution for SRMJEEE Biology Mock Test - 9 - Question 8

Sex chromosomes of human beings are heteromorphic as they are of different size. Y chromosome is smaller than X chromosome in size.

Hence, the correct option is D.
NCERT Reference: Topic- SEX DETERMINATION of chapter "Principles of Inheritance and Variation" of NCERT.

Topic in NCERT: Sex Determination in Humans

Line in NCERT: "In human beings and in Drosophila the males have one X and one Y chromosome, whereas females have a pair of X-chromosomes besides autosomes."

SRMJEEE Biology Mock Test - 9 - Question 9

Which statement is true regarding taxonomic categories?
 

Detailed Solution for SRMJEEE Biology Mock Test - 9 - Question 9

Answer: C. Higher taxonomic categories such as phylum include a broader range of organisms than lower categories like species.

Solution: Higher taxonomic categories, like phylum, encompass a broader diversity of organisms, sharing more general characteristics compared to the more specific and closely related organisms grouped within lower categories like species and genus. This reflects the hierarchical nature of biological classification, where each ascending level represents a broader grouping based on less specific shared traits.

SRMJEEE Biology Mock Test - 9 - Question 10

Which of the following statements regarding different barriers of innate immunity is not correct?

Detailed Solution for SRMJEEE Biology Mock Test - 9 - Question 10

Mucous membrane lining the respiratory, gastrointestinal and uriogenital tracts helps in trapping the microbes and constitute physical barriers of our body.

SRMJEEE Biology Mock Test - 9 - Question 11

Match column I with column II and select the correct option from the given codes.

Detailed Solution for SRMJEEE Biology Mock Test - 9 - Question 11

With reference to the following table, 

SRMJEEE Biology Mock Test - 9 - Question 12

A taxon can be defined as _________

Detailed Solution for SRMJEEE Biology Mock Test - 9 - Question 12
  • A taxon is a taxonomic group of any ranking whereas a group of related species is the genus and a group of related families is the order.
  • Biodiversity is the number and type of organisms present on Earth.

Hence, the Correct Answer is B

NCERT Reference: Topic- TAXONOMIC CATEGORIES” of chapter "The Living world" of NCERT

SRMJEEE Biology Mock Test - 9 - Question 13

Which of the following are the types of bioreactors?
(i) Simple stirred-tank bioreactor
(ii) Complex Stirred-tank bioreactor
(iii) Sparged stirred-tank bioreactor
(iv) Agitator stirred-tank bioreactor

Detailed Solution for SRMJEEE Biology Mock Test - 9 - Question 13

The most commonly used bioreactors are of stirring type. Stirring type bioreactors are simple stirred-tank bioreactor and sparged stirred-tank bioreactor. 

SRMJEEE Biology Mock Test - 9 - Question 14

Which of the following alcoholic drinks are obtained without distillation after fermentation?

Detailed Solution for SRMJEEE Biology Mock Test - 9 - Question 14

Depending upon the type of the raw material used for fermentation and type of processing different types of alcoholic drinks are obtained. Wine and Beer are produced without distillation.

SRMJEEE Biology Mock Test - 9 - Question 15

Which one of the following precedes re-formation of the nuclear envelope during M phase of the cell cycle?

Detailed Solution for SRMJEEE Biology Mock Test - 9 - Question 15

At telophase stage, nuclear membrane vesicles associate with the surface of individual chromosomes and fuse to reform the nuclear membranes, which partially enclose clusters of chromosomes before coalescing to reform the complete nuclear envelope. During this process, the nuclear pores reassemble and re-associate to form the nuclear lamina. One of the lamina proteins (lamina-B) remains with the nuclear membrane fragments throughout mitosis and may help nucleate reassembly. After the nucleus reforms, the pores pump in nuclear proteins, the chromosome decondenses and RNA synthesis resumes, causing the nucleolus to reappear.

SRMJEEE Biology Mock Test - 9 - Question 16
Which of the following is a reason for the higher species diversity in tropical regions?
Detailed Solution for SRMJEEE Biology Mock Test - 9 - Question 16
Tropical regions have had longer evolutionary time and more stable environments compared to temperate areas. This stability promotes greater species diversification and higher biodiversity.
SRMJEEE Biology Mock Test - 9 - Question 17

When the margins of sepals or petals overlap one another without any particular direction, the condition is termed as:

Detailed Solution for SRMJEEE Biology Mock Test - 9 - Question 17

Imbricate aestivation – One internal, one external and others margin overlapping.

SRMJEEE Biology Mock Test - 9 - Question 18

In which of the following plants fruit contain larger number of seed?

Detailed Solution for SRMJEEE Biology Mock Test - 9 - Question 18

The number of ovule present in ovary determine the number of seeds produced inside the fruit. Mango and neem produce single seed in each fruit. Lemon contain a number of seeds but orchid contain many small size seeds.

SRMJEEE Biology Mock Test - 9 - Question 19

Which statement is true regarding protozoans?

Detailed Solution for SRMJEEE Biology Mock Test - 9 - Question 19

Protozoans are diverse, mostly heterotrophic organisms found across various habitats including fresh water, sea water, and moist soil, making Option C correct. Options A, B, and D are incorrect as protozoans are primarily heterotrophs, have several subgroups like amoeboids and flagellates, and not all form symbiotic relationships.

SRMJEEE Biology Mock Test - 9 - Question 20
Which of the following statements is/are correct regarding Class Mammalia?

i. Mammals possess hair or fur and mammary glands that produce milk.

ii. All mammals give live birth.

iii. The mammalian heart has four chambers.

iv. Mammals lack a diaphragm.
Detailed Solution for SRMJEEE Biology Mock Test - 9 - Question 20
Statements i and iii are correct. Mammals are characterized by the presence of hair or fur and mammary glands for milk production, and they possess a four-chambered heart. Statement ii is incorrect because some mammals, like the platypus and echidnas, lay eggs. Statement iv is also incorrect, as all mammals have a diaphragm that aids in respiration.
SRMJEEE Biology Mock Test - 9 - Question 21

Systolic pressure is higher than diastolic pressure due to :-

Detailed Solution for SRMJEEE Biology Mock Test - 9 - Question 21
Systolic blood pressure is the blood pressure during ventricular contraction,diastolic is during ventricular relaxationwhile ventricular contraction,blood is forcefully pumped into the respective arteries,hence systolic blood pressure is more.
SRMJEEE Biology Mock Test - 9 - Question 22

Biopiracy is

Detailed Solution for SRMJEEE Biology Mock Test - 9 - Question 22

Biopiracy is the use of biological resources without proper authorization from country or people concerned without compensate payment.

SRMJEEE Biology Mock Test - 9 - Question 23

Statement I: DNA finger printing is highly reliable method of identification of individual involved in crimes.
Statement II: DNA a fingerprinting is a sure method in solving paternity and maternity disputes.
Statement III: DNA fingerprinting can be used to cure HIV infection.

Detailed Solution for SRMJEEE Biology Mock Test - 9 - Question 23

DNA finger printing is highly reliable method of identification of individual involved in crimes. DNA a fingerprinting is a sure method in solving paternity and maternity disputes.DNA fingerprinting cannot be used to cure HIV infection.

SRMJEEE Biology Mock Test - 9 - Question 24

The genotypes of a husband and wife are IIB and IAi. Among the blood types of their children how many different genotypes and phenotypes are possible?

Detailed Solution for SRMJEEE Biology Mock Test - 9 - Question 24

A cross between two individuals, one with AB blood group and the other with A blood group will produce four genotypes and three phenotypes.

The genotypes of a husband and wife are IAIB and IAi.
Four different possible genotypes of their children are: IAIB, IAi, IBi, IAIA

The possible number of phenotypes of their children are:

  • Blood group A (IAIA, IAi)
  • Blood group B (IBi)
  • Blood group AB (IAIB)

Fig: Cross between blood groups AB and A 
Hence, the correct option is B.
NCERT Reference: Topic  Co-dominance” of chapter "Principles of Inheritance and Variation"  of NCERT 

Topic in NCERT: ABO Blood Group Genetics

Line in NCERT: "Since there are three different alleles, there are six different combinations of these three alleles that are possible, and therefore, a total of six different genotypes of the human ABO blood types."

SRMJEEE Biology Mock Test - 9 - Question 25

The Calvin cycle proceeds in three stages:
1. Reduction, during which carbohydrate is formed at the expense of the photochemically made ATP and NADPH.
2. Regeneration, during which the carbon dioxide acceptor ribulose-1, 5-bisphosphate is formed.
3. Carboxylation, during which carbon dioxide combines with rubulose-1, 5-biphosphate.
Identify the correct sequence.​

Detailed Solution for SRMJEEE Biology Mock Test - 9 - Question 25

Calvin cycle begins with fixation of CO2 into 3 C sugar by the process of carboxylation. RUBISCO, present in the chloroplast stroma catalyzes carboxylation of ribulose-1, 5-biphosphate (RuBP) followed by immediate splitting of unstable product into 3-phosphoglyceric acid. Carboxylation is followed by a series of reduction reactions wherein 3 C compound 3-phosphoglyceric acid is reduced into 3 C compounds glyceraldehydes 3-phosphate (G3P); the reduction reactions are energized by ATP and NADPH serve as an electron donor. Three turns of Calvin cycle obtains 6 molecules of G3P, out of which one is used for glucose formation and rest are used in regeneration phase.  The last phase of Calvin cycle, the regeneration phase ensures the continuous supply of RuBP for carboxylation and regenerates it using G3P. Thus, the correct answer is option D.

Topic in NCERT: The section name from which the line is given is "the calvin cycle."

Line in NCERT: "the calvin cycle proceeds in three stages: (1) carboxylation, during which co2 combines with ribulose-1,5-bisphosphate; (2) reduction, during which carbohydrate is formed at the expense of the photochemically made atp and nadph; and (3) regeneration during which the co2 acceptor ribulose-1,5-bisphosphate is formed again so that the cycle continues."

SRMJEEE Biology Mock Test - 9 - Question 26

Identify the structure in a male cockroach where the sperms are stored?

  

 

Detailed Solution for SRMJEEE Biology Mock Test - 9 - Question 26

Sperms are stored in seminal vesicles in cockroach.

Describe reproductive system of Periplaneta and draw neat and lab

SRMJEEE Biology Mock Test - 9 - Question 27

Assertion: The cross between red and white flower-bearing snapdragon plants results in pink coloured flower.
Reason: Incomplete dominance of red and white flower results in pink coloured flowers.

Detailed Solution for SRMJEEE Biology Mock Test - 9 - Question 27

  • In Snapdragon flower, cross between true-breeding white and red coloured flower produce pink coloured flower in the F1 generation.
  • This happens due to the incomplete dominance of alleles over the other.

Hence, the correct option is A.
NCERT Reference: Topic -  Incomplete Dominance of chapter "Principles of Inheritance and Variation" of NCERT.

Topic in NCERT: Incomplete Dominance

Line in NCERT: "The inheritance of flower colour in the dog flower (snapdragon or Antirrhinum sp.) is a good example to understand incomplete dominance. In a cross between true-breeding red-flowered (RR) and true-breeding white-flowered plants (rr), the F1 (Rr) was pink."

SRMJEEE Biology Mock Test - 9 - Question 28
Circulatory System Evaluate the statements about the frog's circulatory system and select the correct one:
Detailed Solution for SRMJEEE Biology Mock Test - 9 - Question 28
Frogs have a three-chambered heart, consisting of two atria and one ventricle, facilitating a mix of oxygenated and deoxygenated blood, which is typical in amphibians.
SRMJEEE Biology Mock Test - 9 - Question 29

Which of the following companies started selling humulin in the year 1983?

Detailed Solution for SRMJEEE Biology Mock Test - 9 - Question 29

In 1983, Eli Lilly an American company, first prepared two DNA sequences corresponding to A and B chains of human insulin and introduced them in plasmids of Escherichia coli to produce insulin chains. Chains A and B were produced separately, extracted and combined by creating disulphide bonds to form human insulin (humulin).

Topic in NCERT: Genetically engineered insulin

Line in NCERT: "in 1983, eli lilly an american company prepared two dna sequences corresponding to a and b, chains of human insulin and introduced them in plasmids of e. coli to produce insulin chains."

SRMJEEE Biology Mock Test - 9 - Question 30

Juxtaglomerular apparatus is a special sensitive region formed by cellular modifications in the:

Detailed Solution for SRMJEEE Biology Mock Test - 9 - Question 30

JGA is a special sensitive region formed by cellular modifications in the distal convoluted tubule and the afferent arteriole at the location of their contact

Topic in NCERT: JUxta-glomerular Apparatus (JGA) and Regulation of GFR

Line in NCERT: "JGA, a specialised portion of the nephrons, plays a significant role in the regulation of GFR."

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