Life Sciences
GATE XL format:mcq PYQs
Build your understanding with focused practice from past exam papers.
Questions 101–110 of 812. Imported answers require independent review unless marked reviewed.
Question 39
Open questionXL-QMCQ2 marksNeeds review
Phospholipid vesicles prepared in 50
KCl were diluted in water. Based on this information, statements P and Q are made.P: The diluted vesicles will develop membrane potential.
Q: There is a K
concentration difference across the vesicular membrane.Which one of the following options is correct?
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 40
Open questionXL-QMCQ2 marksNeeds review
Peptide-binding cleft in MHC-I is formed by
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 47
Open questionXL-RMCQ1 markNeeds review
Correctly match the names of the plant taxonomists (Group I) with the titles of the books they authored (Group II).
Group I: (P) John Hutchinson; (Q) Adolf Engler and Karl Prantl; (R) Arthur Cronquist; (S) Alfred Barton Rendle.
Group II: (1) Classification of Flowering Plants; (2) Evolution and Classification of Flowering Plants; (3) Die Naturlichen Pflanzenfamilien; (4) The Families of Flowering Plants.
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 48
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Which one of the following mature cell types is live but usually lacks nucleus?
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 49
Open questionXL-RMCQ1 markNeeds review
Correctly match the carnivorous plants (Group I) with the organs (Group II) they modify to trap the prey.
Group I: (P) Pitcher plant (Nepenthes); (Q) Bladderwort (Utricularia); (R) Sundew (Drosera); (S) Venus flytrap (Dionaea).
Group II: (1) Leaf; (2) Fruit; (3) Stem; (4) Tendril.
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 50
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Which one of the following commercially important carbohydrates is naturally produced only by the members of the plant kingdom?
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Which one of the following agents causes the necrotic ring spot disease in stone fruits?
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 55
Open questionXL-RMCQ2 marksNeeds review
In the history of photosynthetic research, the empirical reaction of photosynthesis was first proposed for green plants (equation 1), followed by another reaction for purple sulfur bacteria (equation 2), leading to a generalized equation for photosynthesis (equation 3)
where H₂A in equation 3 is a generalized electron donor.
Which one of the following statements is DISPROVEN by equation 3?
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 56
Open questionXL-RMCQ2 marksNeeds review
Consider a diploid plant species where the cells in the epidermis (the outermost single cell layer) always divide in the anticlinal orientation. If one such cell within the central zone of the shoot apical meristem (SAM) spontaneously becomes tetraploid at the seedling stage, which one of the following cellular arrangements would be most likely observed if the meristem is examined at the adult stage?
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 57
Open questionXL-RMCQ2 marksNeeds review
Correctly match the photosynthetic pathways (Group I) with their first stable products (Group II) in respective plants (Group III)
Group I: (P) C3 cycle; (Q) C4 cycle; (R) CAM
Group II: (1) 3-Phosphoglycerate; (2) Glyceraldehyde-3-phosphate; (3) Oxaloacetate
Group III: (a) Wheat; (b) Sugarcane; (c) Pineapple
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