set 6 MCQ Questions & Answers Detailed Explanation

Question : 1

Pneumatic bones of birds

a) increase the $CO_2$ output

b) increase the heart beat rate

c) increase the respiratory rate

d) increase the buoyancy

Question : 2

Which of the following statement(s) is/are true?

1. Synapsis of homologous chromosomes takes place during prophase I of meiosis.
2. Division of centromeres takes place during anaphase I of meiosis.
3. Spindle fibres disappear completely in telophase of mitosis.
4. Nucleoli reappear at telophase I of meiosis.

a) 1 and 2

b) 3 only

c) 1 only

d) 1, 3 and 4

Question : 3

Nervous tissue is not found in

a) spinal cord

b) brain

c) tendons

d) nerves

Question : 4

Match Column-I with Column-II and select the correct answer using the code given below the lists.

a) A-II; B-IV; C-III, IV; D-I

b) A-IV; B-V; C-III; D-I

c) A-II; B-V; C-III, IV; D-I

d) A-III, IV; B-V; C-II; D-I

Question : 5

Which one among the following is the hardest part of our body ?

a) Thumb nails

b) Skull bones of head

c) Enamel of teeth

d) Spinal vertebra

Question : 6

Which of the following statements are incorrect?

1. Aves are cold-blooded, egg-laying and have four-chambered hearts.
2. Aves have feather-covered bodies, forelimbs are modified as wings and breathe through lungs.
3. Most mammals are viviparous. 4. Fishes, amphibians and reptiles are oviparous.

a) 1 and 4

b) 1, 2 and 3

c) 1 and 3

d) All of these