BIOLOGY

Biology

1. The excretory organs in earthworm are

(a) nephridia (b) flame cells (c) green gland (d) kidneys

2. Which class of vertebrates were the first ones to be totally adapted to land life?

(a) Pisces (b) Aves (c) Reptilia (d) Mammalia

3. In mammals, the teeth are embedded in sockets of jaw and they are said to be

(a) Heterodont (b) Diphyodont (c) Homodont (d) Thecodont

4. Which one of the following is a fungus?

(a) Spirogyra (b) Agaricus (c) Anthocerus (d) Euglena

5. Which one of the following is a diploblastic animal?

(a) Earthworm (b) Leech (c) Cockroach (d) Hydra

6. Mantle is characteristic of

(a) coelenterates (b) roundworms (c) flatworms (d) molluscs

7. Cartilaginous fishes differ from bony fishes by

(a) presence of gill slits (b) absence of operculum

(c) presence of pectoral fins (d) presence of scales

8. Asexual reproductive structure in Marchantia is

(a) capsule (b) sporangia (c) gemma (d) sorus

9. Which one of the following is an egg laying mammal?

(a) Platypus (b) Kangaroo (c) Elephant (d) Shark

10. Which of the following are warm-blooded animals?

(a) Whale (b) Whale shark (c) Alytes (d) Draco

11. Which of the following is a living fossil?

(a) Sphenodon (b) Trygon (c) Ostrich (d) Anteater

12. Phycoerythrin imparts .............. colour to the algae in which it is present.

(a) green (b) blue (c) red (d) yellow

13. Portuguese man-of-war is a

(a) Coelenterate (b) Mollusc (c) Mammal (d) Reptile

14. In Pinus, the pollen are carried to the female cone by

(a) insects (b) wind (c) water (d) man

15. Corals belong to phylum

(a) Coelenterata (b) Porifera (c) Mollusca (d) Echinodermata


ANSWERS

1. a 2. c 3. d 4. b 5. d 6. d 7. b 8. c 9. a 10. a

11. a 12. c 13. a 14. b 15. a