set 4 MCQ Questions & Answers Detailed Explanation

Question : 1

Consider the following statements :

1. Allosomes, are chromosome which are responsible for determination of sex, e.g., X and Y-chromosomes.
2. Autosomes, are chromosomes, which determine the somatic characters.

a) 1 and 2

b) 2 only

c) 1 only

d) None

Question : 2

Fossils are

a) Remains of plants and animals that are still surviving

b) Remains of deadly plants and animals that are extinct

c) Both (a) & (b) 

d) None of the above

Question : 3

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

a) Increasing cranial capacity

b) Shortening of jaws

c) Binocular vision

d) Upright posture.

Question : 4

Which of the following group of animals maintains high and constant body temperature such as mammals ?

a) Birds

b) Reptiles

c) Amphibians

d) Fishes

Question : 5

Modern man evolved from

a) Neanderthal man

b) Java man

c) Peking man

d) cro-magnon man

Question : 6

Which one of the following pairs of nitrogenous bases of nucleic acids, is wrongly matched with the category mentioned against it?

a) Uracil, Cytosine - Pyrimidines

b) Guanine, Adenine - Purines

c) Thymine, Uracil - Pyrimidines

d) Adenine, Thymine - Purines