Select the incorrect statements from the following:
A. Digestive system in Platyhelminthes is incomplete.
B. Bilateral symmetry is a characteristic feature of adult Echinoderms.
C. Pseudocoelom is possessed by Aschelminthes.
D. Notochord is persistent throughout life in the class Chondrichthyes.
E. Members of class Reptilia maintain a constant body temperature.
Choose the answer from the options given below:
1. B and E only 2. C and D only
3. A and C only 4. B and D only
Subtopic:  Miscellaneous |
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Level 3: 35%-60%
NEET - 2026
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The specific receptors for neurotransmitters in a synapse are present on __________.
1. Post-synaptic membrane
2. Pre-synaptic membrane
3. Myelin sheath
4. Schwann cell
Subtopic:  Synapse |
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Level 2: 60%+
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Choose the correct statements regarding muscle contraction 
A. A motor neuron carries a signal sent by the Central Nervous System (CNS) to the sarcolemma of the muscle fibre.
B. The neural signal generates an action potential which causes the release of \(Ca^{++}\) into sarcoplasm.
C. Increase in \(Ca^{++}\) inactivates the actin for breaking cross bridges.
D. Actin binds to the myosin head to form a cross bridge.
E. Shortening of sarcomere takes place by pulling actin filaments towards the centre of 'A' band.
Choose the correct answer from the options given below:
1. A, B, D and E only 2. C and D only
3. C and E only 4. A and B only
Subtopic:  Mechanism of muscle contraction |
 78%
Level 2: 60%+
NEET - 2026
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Which of the following is not an example of convergent evolution?
1. Eyes of octopuses and mammals
2. Fore limbs of whales and bats
3. Wings of butterflies and birds
4. Flippers of penguins and dolphins
Subtopic:  Embryological Evidence of Evolution |
 71%
Level 2: 60%+
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The JGA (Juxta Glomerular Apparatus) is a special sensitive region formed by cellular modifications in___________ related to the same nephron.
1. Distal convoluted tubule and efferent renal arteriole
2. Proximal convoluted tubule and afferent renal arteriole
3. Distal convoluted tubule and afferent renal arteriole
4. Proximal convoluted tubule and efferent renal arteriole
Subtopic:  Nephron Part 1 |
 66%
Level 2: 60%+
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The following reaction depicts the activity of a particular class of enzymes :
   X  Y
   |    |
  C - C   E   \(\xrightarrow{\mathrm{E}}\) X- Y + C = C
(Substrate)         (Product)        (Product)
Identify the enzyme class 'E' from the following options :
1. Ligases 2. Lyases
3. Isomerases 4. Transferases
Subtopic:  Enzymes Classification |
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Level 2: 60%+
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Match List-I with List-II:
List-I List-II
A. Molluscs I. Pulmonary respiration only
B. Reptiles II. Branchial respiration
C. Adult amphibians III. Cellular respiration
D. Amoeba IV. Pulmonary and Cutaneous respiration
Choose the correct answer from the options given below:
1. A-III, B-II, C-I, D-IV
2. A-II, B-I, C-IV, D-III
3. A-II, B-I, C-III, D-IV
4. A-I, B-II, C-IV, D-III
Subtopic:  Respiratory Organs |
Level 3: 35%-60%
NEET - 2026
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What is the reason behind production of large holes in 'Swiss Cheese'?
1. The production of large amount of \(CO_2\) by Clostridium butylicum
2. The production of large amount of \(CO_2\) and \(H_2\) by Trichoderma polysporum
3. The production of large amount of \(CO_2\) and \(H_2\) by lactic acid bacteria called Lactobacillus
4. The production of large amount of \(CO_2\) by Propionibacterium shermanii
Subtopic:  Microbes in Household Products |
 86%
Level 1: 80%+
NEET - 2026
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Match List-I with List-II with respect to chronology of evolution of life forms:
List-I List-II
A. About 65 mya I. Jawless fish probably evolved
B. About 500 mya II. The dinosaurs suddenly disappeared from the earth
C. About 350 mya III. Seaweeds and few plants probably existed
D. About 320 mya IV. Invertebrates were formed and became active
Choose the correct answer from the options given below:
1. A-II, B-IV, C-I, D-III
2. A-II, B-IV, C-III, D-I
3. A-I, B-II, C-III, D-IV
4. A-III, B-IV, C-I, D-II
Subtopic:  Evolution Prior to Ape Man |
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Choose the correct statements regarding population interactions between two species.
A. In both parasitism and commensalism, only one species benefits and the other species is harmed.
B. Both species benefit in mutualism.
C. Both species benefit in commensalism.
D. In parasitism, only one species benefits and the other species is harmed
E. In amensalism, one species is harmed and the other is unaffected.
Choose the correct answer from the options given below:
1. A and D only  2. A and B only 
3. B and E only  4. B, D and E only 
Subtopic:  Miscellaneous |
 81%
Level 1: 80%+
NEET - 2026
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