Botany Multiple Choice Questions

Botany Multiple Choice Questions

1. There are ________ hydrogen bonds between thymine and adenine:
A. 4
B. 3
C. 2
D. 7

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C

2. The eyes on potato tubers are:
A. Scars
B. Sutures
C. Rootlets
D. Nodes with buds

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D

3. What is the stage of meiosis called in which pairing of homologous chromosomes starts?
A. Diplotene
B. Pachytene
C. Leptotene
D. Zygotene

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D

4. Fungus excluding mycelium is:
A. Saccharomyces
B. Mucor
C. Puccinia
D. Rhizopus

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A

5. A gene is located on the site of chromosome which is called a:
A. Site
B. Locus
C. Allele
D. Trait

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B

6. Photorespiration involves the organelles in it which are:
A. Chloroplast, peroxisome, and glyoxysomes
B. Glyoxysomes, chloroplast, and mitochondria
C. Chloroplast, mitochondria and peroxisome
D. Mitochondria, peroxisome and glyoxysomes

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C

7. The ratio of F2 generation in a dihybrid cross is:
A. 1:2:1
B. 1:1
C. 9:3:3:1
D. 3:1

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C

8. Floridean starch is found in __________:
A. Phaeophyceae
B. Rhodophyceae
C. Chlorophyceae
D. Myxophyceae

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B

9. What does the phenomenon called when a single gene has multiple effects?
A. Pleiotropy
B. Genostasis
C. Codominance
D. Epistasis

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A

10. What is The hormone reducing transpiration rate by inducing stomatal closure called:
A. Cytokipin
B. Auxin
C. ABA
D. Ethylene

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C

11. When was the Lamarck’s theory of evolution published?
A. 1806
B. 1802
C. 1812
D. 1809

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D

12. The female sex organ in bryophytes is known as:
A. Antheridium
B. Archegonium
C. Ascogonium
D. Carpogonium

Answer - Click Here:
B