set 4 MCQ Questions & Answers Detailed Explanation

Question : 1

Which one of these is not a food chain

a) Plants → Insects → Frog → Snake → Kite

b) Trees → Deer → Lion

c) Plants → Man → Anaconda

d) Small → plants → Crabs → Fish → Swan → bird

Question : 2

What was the most significant trend in evolution of modern man (Homo sapiens) from his ancestors ?

a) Shortening of jaws

b) Binocular vision

c) Upright posture

d) lncreasing brain capacity

Question : 3

The long bones are hollow and connected by air passages these are characteristics of

a) Birds

b) Mammals

c) Reptiles

d) All land vertebrates

Question : 4

A plant having seeds but lacking flowers and fruits belongs to

a) Ferns

b) Pteridophytes

c) Mosses

d) Gymnosperms

Question : 5

Speciation is

a) new environmental ways for existence

b) making of independent species

c) macro evolution

d) all of the above

Question : 6

Which was absent in the atmosphere at the time of origin of life ?

a) H₂

b) O₂

c) NH₃

d) CH₄