Biology - General Aptitude - General Aptitude (GA) Previous Year Questions

1

2022 · General Aptitude (GA) · General Aptitude · Biology

Life Sciences (XL) 2022

In Angiosperms, normally ‘Exarch Xylem’ occurs in

A

dicot stem

B

monocot stem

C

dicot root

D

dicot leaf

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2

2022 · General Aptitude (GA) · General Aptitude · Biology

Life Sciences (XL) 2022

‘Quiescent Center’ is present in

A

leaf meristem

B

root apical meristem

C

shoot apical meristem

D

floral meristem

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3

2022 · General Aptitude (GA) · General Aptitude · Biology

Life Sciences (XL) 2022

With reference to virulence (vir) region of nopaline type Ti plasmid of Agrobacterium tumefaciens, match Group-I (vir gene) and Group-II (coded protein) in CORRECT combination.

Group-I	Group-II
P. vir A	I. Single strand T-DNA binding protein
Q. vir B	II. Topoisomerase
R. vir E	III. Membrane protein, channel for T-DNA
S. vir D	IV. Sensor protein, constitutive expression

A

P-IV, Q-III, R-II, S-I

B

P-IV, Q-III, R-I, S-II

C

P-IV, Q-II, R-I, S-III

D

P-I, Q-III, R-II, S-IV

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4

2022 · General Aptitude (GA) · General Aptitude · Biology

Life Sciences (XL) 2022

Anomalous secondary growth is observed in

A

Triticum

B

Oryza

C

Zea

D

Dracaena

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5

2022 · General Aptitude (GA) · General Aptitude · Biology

Life Sciences (XL) 2022

Which of the following plant diseases is/are caused by bacteria?

A

Angular leaf spot of cotton

B

Citrus canker

C

Apple scab

D

Leaf curl of papaya

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6

2022 · General Aptitude (GA) · General Aptitude · Biology

Life Sciences (XL) 2022

Phylogenetic system of classification is/are proposed by

A

Carolus Linnaeus

B

John Hutchinson

C

Engler and Prantl

D

Bentham and Hooker

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7

2022 · General Aptitude (GA) · General Aptitude · Biology

Life Sciences (XL) 2022

Which of the following is/are part of marine ecosystem?

A

Open ocean

B

Chaparral

C

Deep sea

D

Estuaries

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8

2022 · General Aptitude (GA) · General Aptitude · Biology

Life Sciences (XL) 2022

In NADP⁺-malic enzyme type C₄ photosynthesis cycle, n molecule(s) of ATP is/are required for the assimilation of one molecule of CO₂. The value of n is ______ (in integer).

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9

2022 · General Aptitude (GA) · General Aptitude · Biology

Life Sciences (XL) 2022

An Arabidopsis thaliana mutant plant developed defective flowers with altered floral organ identity and patterning. In this mutant, the four floral whorls contain Sepal-Sepal-Carpel-Carpel, from the periphery to the center of the flower.
Based on the typical ABC model of floral organ patterning, which among the following are mutated in this plant?

A

Class A gene(s)

B

Class B gene(s)

C

Class C gene(s)

D

Double mutant for Class A and Class C genes

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10

2022 · General Aptitude (GA) · General Aptitude · Biology

Life Sciences (XL) 2022

Match the secondary metabolites in Group-I with types of secondary metabolites in Group-II in CORRECT order.

Group-I	Group-II
P. Myrcene	I. Sesquiterpene
Q. β-Farnesene	II. Cyanogenic glycoside
R. Amygdalin	III. Flavone
S. Nicotine	IV. Alkaloid
T. Luteolin	V. Monoterpene

A

P-I, Q-V, R-II, S-IV, T-III

B

P-V, Q-II, R-IV, S-I, T-III

C

P-II, Q-III, R-IV, S-V, T-I

D

P-V, Q-I, R-II, S-IV, T-III

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11

2022 · General Aptitude (GA) · General Aptitude · Biology

Life Sciences (XL) 2022

Match Group-I (enzyme), Group-II (reaction catalyzed by the enzyme), and Group-III (subcellular localization of the enzyme and the associated metabolic process) in CORRECT combination.

Group-I	Group-II	Group-III
P. PEP Carboxylase	I. 2 Glycolate + 2 O2 = 2 Glyoxylate + 2 H2O2	a. Cytosol – C4 cycle
Q. Rubisco	II. Pyruvate + NAD+ + CoA = Acetyl-CoA + CO2 + NADH	b. Peroxisome – C2 cycle
R. Glycolate oxidase	III. Phosphoenolpyruvate + HCO3- = Oxaloacetate + Pi	c. Mitochondria – aerobic respiration
S. Pyruvate dehydrogenase	IV. 3 (Ribulose 1,5-bisphosphate) + 3 CO2 + 3 H2O = 6 (3-phosphoglycerate) + 6 H+	d. Chloroplast – C3 cycle

A

P-III-a, Q-IV-d, R-I-b, S-II-c

B

P-II-a, Q-III-d, R-I-b, S-IV-c

C

P-IV-a, Q-II-b, R-I-d, S-III-c

D

P-IV-a, Q-II-d, R-I-b, S-III-c

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12

2022 · General Aptitude (GA) · General Aptitude · Biology

Life Sciences (XL) 2022

Match Group-I (selection agent) and Group-II (gene) in CORRECT combination.

Group-I	Group-II
P. Kanamycin	I. pmi
Q. Hygromycin	II. bar
R. Phosphinothricin	III. nptII
S. Mannose	IV. ptxD
	V. dhfr
	VI. hpt

A

P-III, Q-VI, R-II, S-I

B

P-IV, Q-III, R-II, S-I

C

P-I, Q-VI, R-III, S-II

D

P-II, Q-I, R-V, S-VI

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13

2022 · General Aptitude (GA) · General Aptitude · Biology

Life Sciences (XL) 2022

Match Group I (plant natural product), Group II (class) and Group III (source plant) in CORRECT combination.

Group-I	Group-II	Group-III
P. Reserpine	I. Stilbenes	a. Manihot esculenta
Q. Resveratrol	II. Cyanogenic glycoside	b. Crocus sativus
R. Picrocrocin	III. Alkaloid	c. Vitis vinifera
S. Linamarin	IV. Monoterpene glycoside	d. Rauwolfia serpentina

A

P-I-d, Q-II-c, R-IV-a, S-III-b

B

P-III-d, Q-IV-b, R-I-c, S-II-a

C

P-II-a, Q-III-b, R-I-d, S-IV-c

D

P-III-d, Q-I-c, R-IV-b, S-II-a

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14

2022 · General Aptitude (GA) · General Aptitude · Biology

Life Sciences (XL) 2022

Match Group I (plant disease), Group II (causal organism) and Group III (affected plant) in CORRECT combination.

Group-I	Group-II	Group-III
P. Karnal Bunt	I. Phytophthora infestans	a. Rice
Q. Ergot	II. Blumeria graminis	b. Potato
R. Late blight	III. Neovossia indica	c. Rye
S. Powdery mildew	IV. Puccinia recondita	d. Wheat
	V. Claviceps purpurea	e. Barley
	VI. Alternaria solani	f. Brinjal

A

P-II-a, Q-V-b, R-III-d, S-I-e

B

P-III-d, Q-V-c, R-II-e, S-IV-f

C

P-III-d, Q-V-c, R-I-b, S-II-e

D

P-V-c, Q-I-d, R-VI-b, S-II-e

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15

2022 · General Aptitude (GA) · General Aptitude · Biology

Life Sciences (XL) 2022

Make CORRECT match between Group-I and Group-II, in relation to interaction between two species.

Group-I	Group-II
P. Neutralism	I. neither can survive under natural condition without the other
Q. Allelopathy	II. direct inhibition of one species by the other species using toxic compound
R. Amensalism	III. neither is affected by the association with the other
S. Mutualism	IV. one is inhibited and the other is not affected

A

P-I, Q-II, R-III, S-IV

B

P-III, Q-II, R-IV, S-I

C

P-IV, Q-III, R-II, S-I

D

P-III, Q-IV, R-II, S-I

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16

2022 · General Aptitude (GA) · General Aptitude · Biology

Life Sciences (XL) 2022

Which of the following matches is/are CORRECT?

A

Surface fibre – Cotton – Gossypium hirsutum

B

Bast fibre – Flax – Corchorus capsularis

C

Drying oil – Safflower oil – Helianthus annuus

D

Non-drying oil – Castor oil – Ricinus communis

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