Life Sciences
GATE XL discipline:life-sciences PYQs
Build your understanding with focused practice from past exam papers.
Questions 291–300 of 1235. Imported answers require independent review unless marked reviewed.
Question 47
Open questionXL-RMCQ1 markNeeds review
Which one of the following plant families does apple (Malus domestica) belong to?
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Open questionXL-RMCQ1 markNeeds review
The collateral and open type of vascular bundle with an exarch xylem strand is usually found in
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Open questionXL-RMSQ1 markNeeds review
Which of the following tissue types is/are established during embryogenesis in wild-type Arabidopsis thaliana?
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Open questionXL-RMSQ1 markNeeds review
Which of the following plant natural products is/are cyanogenic glycoside(s)?
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Open questionXL-RMSQ1 markNeeds review
Which of the following plant diseases is/are caused by nematode?
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Open questionXL-RMSQ1 markNeeds review
Which of the following selectable marker genes is/are used for herbicide tolerance during genetic transformation of plants?
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Open questionXL-RMSQ1 markNeeds review
Which of the following statements is/are CORRECT with reference to rubber production from plants?
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Open questionXL-RNAT1 markNeeds review
In Calvin-Benson cycle, to produce 1 molecule of glyceraldehyde 3-phosphate by fixing 3 molecules of carbon dioxide, 9 molecules of ATP and ______ molecules (in integer) of NADPH are typically utilized.
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Open questionXL-RMCQ2 marksNeeds review
In wild-type Arabidopsis thaliana, the four types of floral organs (sepal, petal, stamen, carpel) are arranged in concentric whorls from outside to inside. With reference to the ABC model of floral organ patterning, match the homeotic mutants in Group 1 with their respective arrangements of organs in the four whorls given in Group 2.
Group 1 | Group 2
(P) A class mutants | (i) sepal, sepal, carpel, carpel
(Q) B class mutants | (ii) sepal, petal, petal, sepal
(R) C class mutants | (iii) carpel, stamen, stamen, carpel
| (iv) sepal, sepal, petal, petal
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Open questionXL-RMCQ2 marksNeeds review
Match the inhibitors in Group 1 with their respective targets in Group 2.
Group 1 | Group 2
(P) Oligomycin | (i) Cytochrome bc₁ complex
(Q) Antimycin A | (ii) Photosystem II
(R) 3-(3,4-dichlorophenyl)-1,1-dimethylurea (DCMU) | (iii) K⁺ ionophore
(S) Valinomycin | (iv) Fo ATP synthase
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