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JEE Exam  >  JEE Test  >  SRME Subject Wise & Full Length Mock Tests 2026  >  SRMJEEE Biology Mock Test - 5 - JEE MCQ

SRMJEEE Subject Wise & Full Length Biology Mock Test - 5 Free Online Test


Full Mock Test & Solutions: SRMJEEE Biology Mock Test - 5 (40 Questions)

You can boost your JEE 2026 exam preparation with this SRMJEEE Biology Mock Test - 5 (available with detailed solutions).. This mock test has been designed with the analysis of important topics, recent trends of the exam, and previous year questions of the last 3-years. All the questions have been designed to mirror the official pattern of JEE 2026 exam, helping you build speed, accuracy as per the actual exam.

Mock Test Highlights:

  • - Format: Multiple Choice Questions (MCQ)
  • - Duration: 50 minutes
  • - Total Questions: 40
  • - Analysis: Detailed Solutions & Performance Insights

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SRMJEEE Biology Mock Test - 5 - Question 1
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Given below are the diagrammatic representation of position of floral parts on thalamus, condition of ovary and example. Find the correctly matched combination?

Detailed Solution: Question 1

SRMJEEE Biology Mock Test - 5 - Question 2
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What percentage of a human adult's body weight is contributed by muscles?

Detailed Solution: Question 2

Muscles are a specialized tissue that contributes about 40-50% of the body weight in a human adult. This high percentage is due to the extensive network of muscles required for various movements and locomotion, highlighting the importance of muscular system in our daily activities.

Topic in NCERT: MUSCLE

Line in NCERT: "About 40-50 per cent of the body weight of a human adult is contributed by muscles."

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SRMJEEE Biology Mock Test - 5 - Question 3
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How many types of leukocytes are primarily categorized?

Detailed Solution: Question 3

Leukocytes are primarily categorized into two main types: granulocytes and agranulocytes. This classification is based on the presence or absence of granules in their cytoplasm. Granulocytes include neutrophils, eosinophils, and basophils, which are involved in inflammatory and allergic reactions. Agranulocytes, which include lymphocytes and monocytes, play roles in adaptive immunity and phagocytosis.

Topic in NCERT: Leucocytes and Their Types

Line in NCERT: "Leucocytes are generally short lived. We have two main categories of WBCs - granulocytes and agranulocytes."

SRMJEEE Biology Mock Test - 5 - Question 4
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Which of the following changes occur in diaphragm and intercostal muscles when expiration of air takes place?

Detailed Solution: Question 4

When the external intercostal muscles and diaphragm relax, the ribs move downward and inward and diaphragm becomes convex (dome shaped), thus decreasing the volume of thoracic cavity and increasing the pressure inside as compared to the atmospheric pressure outside. This will cause the air to move out (expiration).

SRMJEEE Biology Mock Test - 5 - Question 5
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The given diagram:

I. shows the diagramatic reresentation of the ultra-structure of centriole
II.shows the 9 + 2 arrangement of the axeonemal microtubules of the cilia/fragella

Detailed Solution: Question 5

9 + 2 arrangement of the axonemal microtubules of cilia/flagella 

SRMJEEE Biology Mock Test - 5 - Question 6
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Which floral part is responsible for producing pollen grains?

Detailed Solution: Question 6

The anther is the part of the stamen (male reproductive organ of a flower) responsible for producing pollen grains. Pollen grains contain the male gametes necessary for the fertilization of the ovules.

Topic in NCERT: Androecium

Line in NCERT: "Each anther is usually bilobed and each lobe has two chambers, the pollen-sacs. The pollen grains are produced in pollen-sacs."

SRMJEEE Biology Mock Test - 5 - Question 7
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Haemoglobin has

Detailed Solution: Question 7

The structure for hemoglobin is very similar to myoglobin except that it has a quaternary structure due to the presence of four protein chain subunits.Each protein chain subunit contains a heme group with the iron attached. Each hemoglobin molecule can bind to a total of four oxygen molecules.

Topic in NCERT: quaternary structure of proteins
Line in NCERT: "Some proteins are an assembly of more than one polypeptide or subunits. The manner in which these individual folded polypeptides or subunits are arranged with respect to each other ... is the architecture of a protein otherwise called the quaternary structure of a protein.Adult human haemoglobin consists of 4 subunits. Two of these are identical to each other. Hence, two subunits of α type and two subunits of β type together constitute the human haemoglobin (Hb).

SRMJEEE Biology Mock Test - 5 - Question 8
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Which gland secretes melatonin?

Detailed Solution: Question 8

The pineal gland secretes melatonin, a hormone that regulates sleep-wake cycles and circadian rhythms. Melatonin levels typically rise in the evening to promote sleep and decrease in the morning to help wake up.

Topic in NCERT: The Pineal Gland

Line in NCERT: "The pineal gland secretes a hormone called melatonin."

SRMJEEE Biology Mock Test - 5 - Question 9
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Smallest free living organism are

Detailed Solution: Question 9

Pleuro Pneumonia Like Organisms (PPLOs) also called mycoplasma are considered as smallest free living organism. It do not contain cell membrane or cell wall and present as fluid. It causes disease in plants.
Topic in NCERT: CELL: THE UNIT OF LIFE
Line in NCERT: "The smallest cells, mycoplasmas, are only 0.3 µm in length while bacteria could be 3 to 5 µm.

SRMJEEE Biology Mock Test - 5 - Question 10
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What is the role of myelin sheath in nerve fibers?

Detailed Solution: Question 10

The myelin sheath is a fatty layer that surrounds the axon of some nerve cells, forming an electrically insulating layer. It is essential for the proper functioning of the nervous system. The myelin sheath speeds up the transmission of nerve impulses along the axon by insulating the nerve fiber and allowing electrical impulses to jump from one node of Ranvier to the next, in a process known as saltatory conduction. This significantly increases the speed of nerve signal transmission.

SRMJEEE Biology Mock Test - 5 - Question 11
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Which part of the nephron is responsible for the reabsorption of water and solutes from the filtrate?

Detailed Solution: Question 11

The Proximal Convoluted Tubule (PCT) is responsible for the reabsorption of water and solutes from the filtrate. It plays a key role in recovering essential nutrients and water from the urine back into the bloodstream, thereby conserving valuable resources for the body.

Topic in NCERT: Proximal Convoluted Tubule (PCT)

Line in NCERT: "Nearly all of the essential nutrients, and 70-80 per cent of electrolytes and water are reabsorbed by this segment."

SRMJEEE Biology Mock Test - 5 - Question 12
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The interphase between meiosis I and II, when present, is called

Detailed Solution: Question 12

Telophase I, is followed by an interphase, called interkinesis, similar to the mitoticinter phase. During interkinesis the chromatin is partially uncoiled; however, there is no replication of the genetic material, because each chromosome already consists of two chromatids.

Topic in NCERT: Meiosis I

Line in NCERT: "The stage between the two meiotic divisions is called interkinesis and is generally short lived."

SRMJEEE Biology Mock Test - 5 - Question 13
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Which is correct?

a) Argemone – axile,

b) China rose – free central,

c) Lemon – axile,

d) mustard – parietal.

Detailed Solution: Question 13

Parietal:

  • This type of placentation is found in the unilocular syncarpous ovary. In it, the ovule develops on the inner wall of the ovary or on the peripheral part.
  • Ovary becomes bi or multilocular due to the formation a false septum.
  • For example, Cucurbita, Argemone and Cruciferae family (Mustard). 

Axile:

  • It is found in multicarpellary syncarpous gynoecium. The fusion margin of carpels grows inward and meets in the centre of the ovary.
  • Thus, an axis forms in the centre of the ovary and the ovary becomes multi-chambered. The ovules are borne at the central axis.
  • A number of these chambers are equal to the number of the carpel.
  • For example,  Potato, China rose, Onion, Lemon, Orange, Tomato.

SRMJEEE Biology Mock Test - 5 - Question 14
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Which of the following would help in prevention of diuresis?

Detailed Solution: Question 14

Adrenal cortex secretes mineralocorticoids like aldosterone which increase the reabsorption of Na+ and water from renal tubule that prevent diuresis. Diuresis is a condition in which the kidneys filter too much bodily fluid. 

SRMJEEE Biology Mock Test - 5 - Question 15
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In the floral formula "K(5) C(5) A5 G(2)", what does the symbol "G(2)" represent?

Detailed Solution: Question 15

In the floral formula, "G(2)" represents a bicarpellary, syncarpous gynoecium, indicating that the flower has two carpels that are fused together. This part of the formula provides information about the structure and organization of the female reproductive part of the flower.

Topic in NCERT: Gynoecium
Line in NCERT: The floral formula is represented by some symbols. In the floral formula, Br stands for bracteate K stands for calyx , C for corolla, P for perianth, A for androecium and G for Gynoecium, G for superior ovary and G for inferior ovary, for male, for female, for bisexual plants, ⊕ for actinomorphic and for zygomorphic nature of flower. Fusion is indicated by enclosing the figure within bracket and adhesion by a line drawn above the symbols of the floral parts. A floral diagram provides information about the number of parts of a flower, their arrangement and the relation they have with one another . The position of the mother axis with respect to the flower is represented by a dot on the top of the floral diagram

SRMJEEE Biology Mock Test - 5 - Question 16
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Which of the following is NOT a feature of prokaryotic cells?

Detailed Solution: Question 16

Prokaryotic cells, such as bacteria, do not have a well-defined nucleus. Instead, their genetic material is located in a nucleoid region where DNA is not enclosed by a membrane. This is a key difference between prokaryotic and eukaryotic cells, the latter having a well-defined, membrane-bound nucleus.

SRMJEEE Biology Mock Test - 5 - Question 17
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Select the events that do not occur in interphase stage of cell-cycle
(i) RNA and protein synthesis.
(ii) Cytoplasmic growth.
(iii) Polymerisation of spindle fibres protein.
(iv) Disappearance of Golgi bodies and ER.
(v) DNA molecules in highly supercoiled stage.

Detailed Solution: Question 17

Condensation initiates in prophase.

SRMJEEE Biology Mock Test - 5 - Question 18
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What is the average weight of an adult human kidney?

Detailed Solution: Question 18

The average weight of an adult human kidney is between 120 to 170 grams. This is an important fact because the kidneys play a crucial role in filtering waste from the blood and maintaining the body's fluid balance. Their size and weight reflect their significant workload and functional capacity in the body.

Topic in NCERT: Kidney Structure and Function

Line in NCERT: "Each kidney of an adult human measures 10-12 cm in length, 5-7 cm in width, 2-3 cm in thickness with an average weight of 120-170 g."

SRMJEEE Biology Mock Test - 5 - Question 19
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Listed below ar e four r espiratory capacities (i–iv) and four jumbled respiratory volumes of a normal human adult:


Which one of the following is the correct matching of two capacities and volumes?

Detailed Solution: Question 19

The correct matching of respiratory capacities with their respiratory volumes are:

SRMJEEE Biology Mock Test - 5 - Question 20
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Which among the following is incorrect about different types of cells?

Detailed Solution: Question 20

Size and shape of the cells vary with the functions they perform. In unicellular organism a single cell constitutes the entire organism. The components in all eukaryotic cells are more/less the same. Centrioles are present in animal cells but absent in plant cells.

SRMJEEE Biology Mock Test - 5 - Question 21
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An apoenzyme is a

Detailed Solution: Question 21

The protienous part of an enzyme is known as apoenzyme.

Topic in NCERT: Co-factors

Line in NCERT: "Enzymes are composed of one or several polypeptide chains. However, there are a number of cases in which non-protein constituents called co-factors are bound to the enzyme to make the enzyme catalytically active. In these instances, the protein portion of the enzymes is called the apoenzyme."

SRMJEEE Biology Mock Test - 5 - Question 22
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What is the role of calcium ions in muscle contraction?

Detailed Solution: Question 22

Calcium ions play a crucial role in muscle contraction by binding to troponin. This action removes the inhibition that prevents actin and myosin from interacting, thereby facilitating the formation of cross-bridges between these filaments, which is essential for muscle contraction.

Topic in NCERT: Muscle Contraction

Line in NCERT: "Increase in Ca** level leads to the binding of calcium with a subunit of troponin on actin filaments and thereby remove the masking of active sites for myosin."

SRMJEEE Biology Mock Test - 5 - Question 23
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What is the effect of hypersecretion of growth hormone in adults?

Detailed Solution: Question 23

Hypersecretion of growth hormone in adults leads to acromegaly, characterized by abnormal growth of the hands, feet, and face, due to the enlargement of bones and tissues.

Topic in NCERT: Excess secretion of growth hormone in adults

Line in NCERT: "Excess secretion of growth hormone in adults especially in middle age can result in severe disfigurement (especially of the face) called Acromegaly, which may lead to serious complications,"

SRMJEEE Biology Mock Test - 5 - Question 24
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What causes the striated appearance of skeletal muscles?

Detailed Solution: Question 24

The striated appearance of skeletal muscles is due to the arrangement of actin and myosin filaments. The alternating dark (A bands) and light (I bands) stripes are caused by the distribution pattern of these two important proteins, with actin forming the thin filaments and myosin forming the thick filaments.

Topic in NCERT: Structure of Myofibrils

Line in NCERT: "The detailed study of the myofibril has established that the striated appearance is due to the distribution pattern of two important proteins – Actin and Myosin."

SRMJEEE Biology Mock Test - 5 - Question 25
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Given figure represents the maturation of pro-insulin into insulin. Identify the product A.

Detailed Solution: Question 25

A represents polypeptide chain C which is removed prior to insulin formation

Topic in NCERT: Genetically engineered insulin

Line in NCERT: "insulin consists of two short polypeptide chains: chain a and chain b, that are linked together by disulphide bridges."

SRMJEEE Biology Mock Test - 5 - Question 26
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Identify the blank spaces A, B, C and D in the table given below and select the correct answer.

Detailed Solution: Question 26

Trichoderma polysporum is a fungal species that is known to make cyclosporine A compound. This compound exhibits antifungal and anti-inhibitory properties. The key property of this compound is that it is able to inhibit the activation of T-cells. These cells are involved in recognizing foreign and self elements. During the time of grafting usually, our body rejects the graft as T-cells recognize it as foreign. But using cyclosporine A we can inhibit this rejection by T-cells. So, the medical application of Cyclosporin A is an immunosuppressive agent.
Monascus purpureus is a yeast strain belonging to the fungus that is known to make statin. Statin is a competitive inhibitor of cholesterol synthesis. This means that it negatively affects the cholesterol synthesis process. So, its medical application is that it is used to lower blood cholesterol levels.
Thus, from the above discussion, we can conclude that option A is the correct answer.

SRMJEEE Biology Mock Test - 5 - Question 27
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What is the nature of blood passing through blood vessels A, B, C and D respectively?

Detailed Solution: Question 27

'A' is vena cava that carries deoxygenated blood
'B' is aorta that carries oxygenated blood
'C' is pulmonary artery that carries deoxygenated blood
'D' is pulmonary vein that carries oxygenated blood.

SRMJEEE Biology Mock Test - 5 - Question 28
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The diagram given below represnts the histology of a striped muscle. Label the parts A,B,C,D,E and F

Detailed Solution: Question 28

  • A: Light band present on the myofibril is called I-band or isotropic band. It consists of only actin filaments.
  • B: Sarcoplasm is enclosed by sarcolemma which contains many nuclei.
  • C: Myofibril is made up of two types of myofilaments which are thick and thin.
  • D: Sarcolemma is the plasma membrane of muscle fibre.
  • E: Nucleus
  • F: Dark band present on the myofibril is called A-band or anisotropic band.

So, the correct answer is 'A- light band, B- sarcoplasm, C- myofibril, D- sarcolemma, E- nucleus, F- dark band'.

Topic in NCERT: Myofibrils

Line in NCERT: "each myofibril has alternate dark and light bands on it."

SRMJEEE Biology Mock Test - 5 - Question 29
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Study the given figure of respiratory passage carefully and identify the parts labelled as A, B, C, D and E.
 

Detailed Solution: Question 29

In the given figure depicting the respiratory passage in man, the unidentified parts are as follows: (A) Alveolar sac, (B) Secondary bronchus, (C) Alveoli, (D) Bronchioles, and (E) Trachea.

SRMJEEE Biology Mock Test - 5 - Question 30
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Given below is the diagram of human lymphatic system, where A, B, C and D are lymphoid organs. Select incorrect option regarding the lymphoid organs labelled as A, B, C and D.

Detailed Solution: Question 30

'A'-lymph nodes, 'B'-Thymus, 'C'-spleen, 'D'-Bone marrow. Thymus and bone marrow are the primary lymphoid organs where maturation of T-cells and B-cells take place respectively. Lymph nodes and spleen are the secondary lymphoid organs where T-cells and B-cells undergo proliferation and differentiation.

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This mock test contains 40 questions designed to replicate the pattern, difficulty level and time pressure of the actual JEE exam. It is part of SRMJEEE Subject Wise & Full Length Mock Tests 2026 on EduRev, covering all the topics that are being asked as per the current JEE syllabus. Attempting this test under timed conditions will help you assess your exam readiness, identify subject-wise weak areas, and improve your speed and accuracy before the actual exam.

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