genetics, evolution of life & ecological biodiversity - Category wise Question and Answer Practice Test with Solutions

Question : 1

Group of organisms that closely resemble each other and freely interbreed in nature, constitute a

a) family

b) species

c) genus

d) taxon

Question : 2

Which one is linked to evolution?

a) Competition

b) Variation

c) Extinction

d) Reproduction

Question : 3

A dihybrid condition is

a) Tt rr

b) tt rr

c) tt Rr

d) Tt Rr

Question : 4

The primitive atmosphere of earth contained water vapours, hydrogen, ammonia and

a) O₂

b) N₂

c) CO₂

d) CH₄

Question : 5 [MPPCS (Pre) 1997]

Darwin’s theory of natural selection is based on

a) Survival of the fittest

b) Over production

c) Struggle for existence and variation

d) All of the above