GATE XL 2026 Paper 1 — page 19

Questions 55–57 of 122. Imported answers require review unless explicitly marked reviewed.

Which one of the following class(es) of genes, when deleted, would result in sepal formation in all the floral whorls of Arabidopsis, as per the rules of the typical ABC model of floral organ patterning?

Your answerChoose one option.

Class A only

Class A and class B

Class B and class C

Class B only

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

Correctly match the following molecular assemblies in Group-I with their functions in Group-II.

Group-I: (P) Photosystem I (Q) Photosystem II (R) Cytochrome b₆f complex (S) CF₀ – CF₁ complex

Group-II: (1) Utilizes proton gradient for ATP synthesis (2) Transfers electron from reduced plastoquinone to oxidized plastocyanin (3) Drives transfer of electron from plastocyanin to ferredoxin (4) Oxidizes H₂O and reduces plastoquinone

Your answerChoose one option.

P–3; Q–4; R–1; S–2

P–3; Q–4; R–2; S–1

P–2; Q–4; R–3; S–1

P–4; Q–1; R–2; S–3

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

Correctly match the following secondary metabolites in Group-I with their chemical classes in Group-II.

Group-I: (P) Codeine (Q) Podophyllotoxin (R) Resveratrol (S) Linamarin (T) Limonene

Group-II: (1) Flavones (2) Alkaloids (3) Lignans (4) Monoterpenes (5) Cyanogenic glycosides (6) Stilbenes

Your answerChoose one option.

P–1; Q–2; R–6; S–5; T–4

P–2; Q–5; R–6; S–3; T–4

P–2; Q–3; R–5; S–4; T–1

P–2; Q–3; R–6; S–5; T–4

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

2026 · Paper 1

Question 55

Question 56

Question 57