Gate Way To CGL Mains : Biology Quiz

1. In which one of the following is the anus absent ?
(A) Leech
(B) Roundworm
(C) Earthworm
(D) Flatworm

2. Which type of jaw suspension is found in mammals ?
(A) Autostylic
(B) Holostylic
(C) Craniostylic
(D) Hyostylic

3. Synthesis of urea in liver takes place by—
(A) Nitrogen cycle
(B) Krebs’ cycle
(C) Glycolysis
(D) Ornithine cycle

4. Sexual dimorphism is found in—
(A) Hydra
(B) Earthworm
(C) Ascaris
(D) Fasciola

5. Which of the following animals has a nervous system but no brain ?
(A) Amoeba
(B) Hydra
(C) Cockroach
(D) Earthworm

6. Aristotle’s Lantern occurs in—
(A) Asteroidea
(B) Echinoidea
(C) Holothuroidea
(D) Crinoidea

7. Neoteny is observed in—
(A) Ambystoma
(B) Alytes
(C) Sycon
(D) Sacculina

8. Kidneys are vital organs of the body because they help in—
(A) Regulation of body fluids
(B) Regulation of acid-base balance
(C) Removal of metabolic wastes
(D) All of these functions

9. The infective stage of malarial parasite is—
(A) Trophozoite
(B) Merozoite
(C) Sporozoite
(D) Cyst

10. Parasitic castration occurs in—
(A) Fasciola
(B) Nereis
(C) Sacculina
(D) Palaemon

ANSWER
KEY:
1 – (D)
2 – (A)
3 – (D)
4 – (B)
5 – (B)
6 – (B)
7 – (A)
8 – (D)
9 – (C)

10- (C)