GATE XL format:mcq PYQs & Answers — Page 67

Questions 661–670 of 812. Imported answers require independent review unless marked reviewed.

Statements given below are either TRUE (T) or FALSE (F). Select the CORRECT combination.

P. Mitosis occurs exclusively in diploid mother cell Q. Mitosis occurs both in diploid and haploid mother cells R. Meiosis occurs exclusively in diploid mother cell S. Meiosis occurs both in diploid and haploid mother cells

Your answerChoose one option.

P-T, Q-F, R-T, S-F

P-F, Q-T, R-F, S-T

P-T, Q-F, R-F, S-T

P-F, Q-T, R-T, S-F

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You are asked to design a genetic construct for high-level expression of a gene encoding the therapeutic protein 18 (TP18) via plastid transformation. Select the CORRECT set of genetic elements for this construct.

Your answerChoose one option.

Actin1 promoter → TP18 coding sequence → Actin1 transcription terminator

Ubiquitin1 promoter → TP18 coding sequence → Ubiquitin1 transcription terminator

rbcS promoter → TP18 coding sequence → rbcS transcription terminator

rbcL promoter → TP18 coding sequence → rbcL transcription terminator

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Select the CORRECT combination of the following statements.

P. The cyclic electron transport chain involving PSI results in net production of both ATP and NADP Q. The cyclic electron transport chain involving PSI results in net production of ATP R. Rubisco enzyme usually converts RuBP and CO₂ into 2-phosphoglycolate and 3-phosphoglycerate S. Rubisco enzyme usually converts RuBP and O₂ into 2-phosphoglycolate and 3-phosphoglycerate

Your answerChoose one option.

P, Q

R, S

Q, S

P, R

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Match the fruit characters with their families and representative plant species.

Fruit character P. Syconus Q. Capsule, opening by apical pores or valves R. Legume S. An aeterio of drupe

Family

Moraceae

Fabaceae

Papaveraceae

Annonaceae

Plant species i. Canavalia ensiformis ii. Artabotrys odoratissimus iii. Ficus religiosa iv. Papaver somniferum v. Pistacia vera vi. Citrus aurantium

Your answerChoose one option.

P-2-iv, Q-3-ii, R-1-vi, S-4-v

P-1-iii, Q-3-iv, R-2-i, S-4-ii

P-3-i, Q-2-iii, R-4-ii, S-1-vi

P-4-v, Q-1-ii, R-2-v, S-3-i

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Select the CORRECT combination by matching the disease, affected plant and the causal organism.

Disease P. Black rot Q. Loose smut R. Panama wilt S. Bacterial fruit blight

Affected plant

Corn

Banana

Watermelon

Apple

Causal organism i. Fusarium oxysporum f.sp. cubense ii. Acidovorax avenae subsp. citrulli iii. Botryosphaeria obtusa iv. Ustilago maydis v. Plasmopara viticola vi. Venturia inaequalis

Your answerChoose one option.

P-2-v, Q-1-iv, R-3-iii, S-4-vi

P-2-ii, Q-1-iv, R-4-iii, S-3-i

P-4-iii, Q-1-iv, R-2-i, S-3-ii

P-4-vi, Q-1-iii, R-3-ii, S-2-v

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Select the CORRECT combination by matching Group-I with Group-II.

Group-I P. Photorespiration Q. Respiration R. Amino acid degradation S. Fatty acid synthesis

Group-II

Glutamate → 2-Oxoglutarate

Acetyl-CoA → Malonyl-CoA

2-Oxoglutarate → Succinyl-CoA

Glycine → Serine

Your answerChoose one option.

P-1, Q-2, R-3, S-4

P-2, Q-1, R-4, S-1

P-3, Q-4, R-2, S-3

P-4, Q-3, R-1, S-2

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Match the plant alkaloids with their uses and source species.

Alkaloid P. Codeine Q. Caffeine R. Scopolamine S. Vinblastine

Use

Stimulant

Analgesic

Antineoplastic

Anticholinergic

Source species i. Hyoscyamus niger ii. Catharanthus roseus iii. Cola nitida iv. Papaver somniferum v. Coptis japonica vi. Senecio jacobaea

Your answerChoose one option.

P-2-iv, Q-1-iii, R-4-i, S-3-ii

P-4-iii, Q-2-v, R-1-vi, S-3-i

P-2-v, Q-1-vi, R-3-iv, S-4-ii

P-3-ii, Q-4-iii, R-1-iv, S-2-i

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Identify the CORRECT combination of statements with respect to chemical defense in plants.

P. Pisatin, a phytoalexin produced by Ricinus communis is a constitutive defense compound Q. Phaseolus vulgaris produces Phaseolus agglutin I, which is toxic to the cowpea weevil R. A single step non-enzymatic hydrolysis of cyanogenic glycoside releases the toxic hydrocyanic acid (HCN) to protect plant against herbivores and pathogens S. Avenacin, a triterpenoid saponin from oat prevents infection by Gaeumannomyces graminis, a major pathogen of cereal roots

Your answerChoose one option.

P, Q

Q, S

R, S

P, S

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David Baltimore’s classification of viruses is based on differences in

Your answerChoose one option.

host cell receptors used by viruses

the pathways required to synthesize virus mRNA

the modes of transmission of viruses

the envelope proteins on the surface of viruses

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Which of the following immune system components can function as an opsonin?

Your answerChoose one option.

Antibodies

T-cell receptors

Histamines

Interferons

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GATE XL format:mcq PYQs

Question 11

Question 12

Question 13

Question 14

Question 15

Question 16

Question 17

Question 18

Question 1

Question 2