set 5 MCQ Questions & Answers Detailed Explanation

Question : 1

A modification of leaf is

a) Cladode

b) Tendrils

c) Phylloclade

d) Corm

Question : 2

Organisms which display properties of both living and non-living are

a) Lichens

b) Viruses

c) Diatoms

d) Bacteria

Question : 3

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 : 4

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

a) Tiger

b) Cheetah

c) Leopard

d) Lion

Question : 5

A nucleotide is formed of

a) purine, sugar and phosphate

b) nitrogenous bases, sugar and phosphate

c) purine, pyrimidine and phosphate

d) pyrimidine, sugar and phosphate

Question : 6

Ligase helps in

a) translation

b) inserting few genes in DNA

c) removal of few genes

d) bringing transversion in chromosomes