set 4 MCQ Questions & Answers Detailed Explanation

Question : 1

Which of the following viruses have RNA as the genetic material?

1. Polio-viruses
2. Retroviruses
3. Adeno-viruses
4. TMV

a) 2, 3 and 4

b) 1, 2 and 4

c) 1, 2 3 and 4

d) 3 and 4

Question : 2

The first organisms were

a) Chemoheterotrophs

b) Autotrophs

c) Chemoautotrophs

d) Eukaryotes

Question : 3

Match List-I with List-II :

a) 4 3 2 1

b) 3 4 1 2

c) 4 3 1 2

d) 3 4 2 1

Question : 4

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 : 5

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 : 6

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