Quiz 14-September-2023

#1. Which is correct hierarchical sequence in taxonomy?

Phylum-Class-Order-Family-Genus

Class‐Phylum‐Order‐Family‐Genus

Phylum‐Class‐Order‐Genus‐Family

Phylum‐Class‐Family‐Order‐Genus

#2. Birds besides lungs have highly branched air sacs. The major function of air sac is to

Increase surface area for gas exchange.

Help in ventilation during inhalation.

Help in ventilation during exhalation.

Help in ventilation during both inhalation and exhalation.

#3. Smooth movement of bacteria during chemotaxis is due to

Movement of H+ across plasma membrane

Phosphorylation of Che A

Due to tumbling

Phosphorylation of CheY

#4. In population of 10 million individuals birth rate is 19 per 1000 and death rate is 14 per 1000. Annual rise in population would be-

14,000

50,000

5,000

500,000

#5. Rate of molecular evolution would be least in

Synonymous change in codon

Introns of genes

Flanking regions of genes

Nonsynonymous change in codon

#6. In spite of the prevalence of herbivory, the earth continues to be largely green because

the number of herbivore species is low.

herbivores are very inefficient feeders.

herbivore numbers are kept low by their predators.

herbivory promotes plant growth.

#7. Among the following which molecule has been frequently used for molecular systematics

Globin

Collagen

Cytochrome C

Insulin

#8. Which factor is least responsible for genetic drift?

Migration

Founder effect

Bottleneck

Restriction of resources

#9. The most probable place where life would have originated

In oceans

Outer space

Barren rocks

Deep hydrothermal vents

#10. Biomass turnover time is the ratio between biomass and productivity of an ecosystem. Which of the following forests should have highest biomass turnover time?

Temperate deciduous forests

Boreal forests

Tropical wet forests

Tropical dry forests

Finish

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