set 5 MCQ Questions & Answers Detailed Explanation

Question : 1

Polar bears are carnivores and prey on many arctic birds and fishes. However, under natural conditions, no one found polar bears predating any penguin. This is because

a) polar bears and penguins never coexist under natural conditions. The former lives in the North Pole while the latter lives in the South Pole

b) penguins have chemical substance in their muscles which is toxic to polar bears

c) penguins are gregarious and always move in groups. Therefore, a polar bear cannot approach them

d) None of these

Question : 2

In terms of the evolution of organisms, which one among the following is the most advanced?

a) Shark

b) Bat

c) Pigeon

d) Vulture

Question : 3

Sex-determination by environmental factors is commonly observed in

a) Melandrium album

b) Mirabills jalapa

c) Drosophila melanogaster

d) Bonellia viridis

Question : 4

A modification of leaf is

a) Cladode

b) Tendrils

c) Phylloclade

d) Corm

Question : 5

Gaucher’s disease is associated with abnormal metabolism of

a) protein

b) nucleic acid

c) fat

d) carbohydrate

Question : 6

About whom is said ‘India’s large wild cat’ has recently become extinct?

a) Tiger

b) Cheetah

c) Leopard

d) Lion