Biology Questions: Paper - 4

Biology Model Question Paper - 4

1.

Which of following two hormones are essential for induced breeding of fishes?
(A) TSH and ACTH
(B) Oestrogen and progesterone
(C) FSH and LH
(D) Vassopressin and oxytocin

Answer: (C)

2.

When red blood corpuscles containing both A and B antigens are mixed with your blood serum, they agglutinate. Hence your blood group is _______ type.
(A) O
(B) AB
(C) B
(D) A

Answer: (A)

3.

When the oxygen supply to the tissue is inadequate, the condition is
(A) Dyspnea
(B) Hypoxia
(C) Asphyxia
(D) Apnea

Answer: (B)

4.

Which of the following is properly matched?
(A) Echinodermata - Asteroidea - Star fish
(B) Arthropoda -Insecta -Spider
(C) Mollusca - Cephalopoda - Unio
(D) Platyhelminthes -Trematoda - Planaria

Answer: (A)

5.

Which of the following is NOT correctly matched?
(A) Sycon – Canal system
(B) Star fish – Radial symmetry
(C) Ascaris – Flame cell
(D) Prawn – Haemocoel

Answer: (C)

6.

Which of the following is not a green house gas?
(A) Carbon monoxide
(B) Methane
(C) Oxygen
(D) Water vapour

Answer: (C)

7.

Which of the following is a mineralocorticoid?
(A) Testosterone
(B) Progesterone
(C) Adrenalin
(D) Aldosterone

Answer: (D)

8

Which of the following hormones is a steroid?
(A) Estrogen
(B) Insulin
(C) Glucagon
(D) Thyroxine

Answer:  (A)

9.

Which of the following hormones does not naturally occur in plants?
(A) IAA
(B) GA
(C) ABA
(D) 2, 4 - D

Answer: (D)

10.

Which of the following hormones does not contain a polypeptide?
(A) Oxytocin
(B) Insulin
(C) Antidiuretic hormone
(D) Prostaglandin

Answer: (D)

11.

Which function will be lost due to damage of occipital lobe?
(A) Hearing
(B) Speech
(C) Vision
(D) Memory

Answer: (C)

12.

Which centre is stimulated during increase in body temperature
(A) Anterior hypothalamus
(B) Posterior hypothalamus
(C) Limbic system
(D) Red nucleus

Answer: (A)

13.

When the two ecosystems overlap each other, the area is called
(A) Habitat
(B) Niche
(C) Ecotone
(D) Ecotype

Answer: (C)

14.

When the blood contains a high percentage of CO2 and a very low percentage of O2, the breathing stops and the person becomes unconscious. This condition is known as
(A) suffocation
(B) asphyxia
(C) emphycema
(D) eupnoea

Answer:  (B)

15.

When DNA replication starts
(A) The hydrogen bonds between the nucleotides of two strands break.
(B) The phosphodiester bonds between the adjacent nucleotides break.
(C) The bonds between the nitrogen base and deoxyribose sugar break.
(D) The leading strand produces okazaki fragments.

Answer: (A)