GATE Life Science - Botany Previous Questions and Answers

 1. Indefinite stamens is a characteristic feature of the which of the following plant families? (Taxonomy)

a) Malvaceae

b) Poaceae

c) Apocynaceae

d)Brassicaceae

2. Which of the following summarizes the role of casparian strip in transport of water in the root? (Plant physiology)

a) Symplast to Apoplast

b) Apoplast to Symplast

c) Phloem to Xylem

d) Xylem to phloem

3. Which of the following is most abundant in the aleurone layer of wheat seeds? (Plant Anatomy)

a) Starch

b) Lipid

c) Protein

d) Tannin

4. The metal ion required for the enzymatic activity of nitrogenase is (biochemistry)

a) zinc

b) cobalt

c) copper

d) Molybdenum

5. Genome sequencing of rice will help to (Genetics)

a) characterize genes present in the rice genome

b) control agri-business

c) control rice germplasm

d) validate the genes available in other plants

 

6. Heterosis helps in crop improvement. Identify the correct statements. (Plant breeding)

P) Parental line improvement by diversification of cms and restorer sources for higher yield

Q) development of fortified food to satisfy market demand

R) improved hybrid crop developed for dual function salinity tolerance and fungal resistance.

S) reciprocal crosses of an improved isogenic line for a better world

a) Q, S

b) P, S

c) P, Q

d) P, R

7. Match the following. (Fungi classification)

P. Agaricus  sp             1. Ascomycetes

Q. Pilobolus sp            2. Deuteromycetes

R. Neurospora sp        3. Phycomycetes

S. Rhizoctonia sp        4. Basidiomycetes

                                    5. Zygomycetes

                                    6. Actinomycetes

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

b) P -5, Q-4, R-3, S-1

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

d) P -6, Q-1, R-3, S-5

8. Ergot of rye is caused by (Fungi)

a) Fusarium oxysporum

b) Claviceps purpurea

c)Aspergillus niger

d) Alternaria solani

9. Which of the following is a neutral phenomenon? (Ecology)

a) Natural selection

b) sexual selection

c) genetic drift

d) population bottleneck

10. Kyoto protocol is related to

a) acid rain

b) photochemical smog

c)ozone hole

d)global warming

Learn more: Botany MCQ 

1. a) Malvaceae

2. b) Apoplast to Symplast

3. c) Protein

4. d) Molybdenum

5. a) characterize genes present in the rice genome

6. d) P, R

7. c) P -4, Q-3, R-1, S-2

8. b) Claviceps purpurea

9. c) genetic drift

10. d)global warming