Select the incorrect statements from the following:
Choose the answer from the options given below:
| 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. |
| 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%
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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
Choose the correct answer from the options given below:
| 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. |
| 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 |
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Level 2: 60%+
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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 |
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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 |
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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 :
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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Match List-I with List-II:
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
| 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 |
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 |
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Match List-I with List-II with respect to chronology of evolution of life forms:
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
| 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 |
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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Level 2: 60%+
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Choose the correct statements regarding population interactions between two species.
Choose the correct answer from the options given below:
| 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. |
| 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%+
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