PROTOCHORDATES

PROTOCHORDATES

1 . Notochord develops from

a. Ectoderm b. Endoderm c. Chorda mesoderm d. None

2. Chordates were evolved from

a. Molluscs b. Echinoderms c. Arthropods d. Annelids

3. Cephalochordates are

a. Filter feeder b. Predators c. Carnivorous d. All

4. Amphioxus is

a. Burrowming b. Nektonic c. Pelagic d. None

5. Larval forms of urochordates is known as

a. Tornaria b. Bipinnaria c. Tadpole d. Trochordata

6. Phylum chordate was established by

a. Hyman b. Huxley c. Balfour d. Rommer

7. Larva of Balanoglossus is

a. Bipinnaria b. Tornaria c. Auricularia d. Trochophore

8. Ascidian show

a. Neoteny d. Retrogressive metamorphosis c. Paedogenesis d. All the above

9. Tunicin is the basic material of

a. Skin of echnoderms b. Test of urochordata c. Shell of mollusca

d. All the above

10. Vandium is found in blood of

a. Amphioxus b. Tunicates c. Myxine d. Tadpole larva of frog

11. In Amphioxus excretion takes place by

a. Flames cells b. Protonephridium c. Myotomes d. Kidney

12. Balanoglossus forms burrow like

a. S-shaped b. U-shaped c. Z-shaped d. None

13. Cranium is absent in

a. Protochordata b. Vertebrata c. Craniata d. All the above

14. Test of ascidian is

a. Protective b. Restiratony c. Sensory d. All

15. Endostyle is

a. Stigmatal opening b. Hypopharyngeal groove c. Atrial tentacles

d. Tubular nerve cord

16. Colonial ascidian is

a. Herdmania b. Botryllus c. Doliolum d. Ciona

17. Ciliated organ of Muller is

a. Velum b. Wheel organ c. Branchial sac d. None

18. Sea squirt is common name of

a. Balanoelossus b. Herdmania c. Amphioxus d. None

19. The larva from which chordates are supposed to be evolved

a. Auricularia b. Trochophore c. Bipinnaria d. Tornaria

20. Peromyzon is etoparasite on

a. Rat & squirrel b. Fishes & turtles c. Cattle's d. All the above

21. Myxine is endoparasite of

a. Crabs b. Sea snakes c. Fishes d. None

22. Petromyzon is

a. Anadromous b. Catadromous c. Nodroinous d. None

23. Pineal orgran is found in

a. Myxine b. Petromyzon c. Both d. None

24. Lamprey is the common name of

a. Petromyzon b. Myxine c. Amphioxus d. None

25. Myxine is commonly known as

a. Hag muscle b. Hag fish c. Hedge hog d. None


ANSWERS

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

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

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