FISHES AND AMBHIBIA

FISHES AND AMBHIBIA

1. Exoskeleton of fishes Is called

A. Scutes B. Horny structures C. Scales D. Fur

2. In fishes, lateral line sense organs help in detecting

A. The temperature fluctuations in water

B. The Intensity of light ways penetrating into water

C. The sounds produced in water

D. The pressure changes in the surrounding

3. Ampullae of Lorenzinl in Chondrichthyes are

A. Thermo receptors B. Thigmo receptora C. Photo receptors. D. Osmo regulators

4. Heart in fishes always contain

A. Arterial blood B. Venous blood C. Lymph D. All the above

5. Venous heart is characteristic of

A. Fishes B. Amphib i a n s C. Prochordates D. All the above

6. Excretory organs of fishes are ... kidneys

A. Pro nephric B. Meso nephric C. Meta nephric D. None of these

7. ............ is viviparous.

A . Mullet B. Sardine C. Mackeral D. Shark

8. In Shark, the caudal fin is described as

A . Homocercal B. Heterocerca1 C. Diphycercal D. Protocercal

9. ............are the copulatory organs of Shark

A. Claspers B. Penis C . Spicule s D. None of these

10. Nictating membranes in the shark are Shark are those that connected with the

A. Inner ear B. Eyes C. Nasal opening D. Pharynx

11. The neuromast organs of Shark are

A. Rheoreceptors B. Thermo receptors C. Photo receptors D. Thigmo receptors

12. Shark Liver is a good source of

A . Oil and Vitamin A. B. Vitamin B C . Vitamin C D. All the above

13. Yolk sac placenta is found in

A. Shark B . Mullet C. Mackeral D . Analias

14. Scolidon sorrakowah is the biological name of

A. Shark B. Frog C. Lizard D. Bony fish

15. Narcine is commonly known as

A . Electric ray B. Sting ray C. Whip ray D. Eagle ray

16. Narcine is unique for the

A. Huge body B. Spiral valve C. Meterocercal caudul fin. D. Electric organ

17. The organ of offence and defence in Narcine is

A. Poisonous spine B. Electric organ C . Powerful fins D. All the above

18. Electric organs of Narcine are modifications of

A . Pectoral fins B. Pectoral muscles. C. Pelvic fins D. Pevic muscles

19. Torpedo is an example for

A . Electric ray B. Sting ray C. Whip ray D. Eagle ray

20. Trygon is commonly known as

A . Saw fish B . Sting ray C. Electric ray D. Dog fish

21. Sting ray can be easily recognised by its

A. Caudal fin B. Dorsal fin C. Long slender like tail D. All the above

21. ......... are included under class Chondricthyes.

A. Dog fish B. Electric ray C. Sting ray D. All the above

22. Bony fishes are included under the class

A. Chondr ichthyes B. Osteichthyes C. Both ‘a’ and ‘b’ D . None of these

23. Teleoste are commonly known as

A. Cartilaginous fishes B. Bony fishes C. Both a and b D. Neither a nor b

24. Cyloid and Ctenoid scales are peculiar of

A. Cartilaginous fishes B. Bony fishes C. All fishes D. Amphibians

25. Caudal fin in Mullet is described as

A. Heterocercal B. Diphycercal C. Homocercal D. All the above

ANSWERS

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

11. a 12. a 13. a 14. a 15. a 16. d 17. b 18. b 19. a 20. b

21. d 22. b 23. b 24. b 25. c