1. BIO 001Tutorial questions on Phylum Mollusca and Phylum Echinodermata

2. 1) Calcareous shells of molluscs are secreted by------- (a) visceral mass (b) ctenidia (c) mantle (d) nephridium. 2) Most molluscs have a rasping tooth like ----------- for feeding (a) radula (b) ambulacral groove (c) tentacle (d) oral groove

3. 3) Which of this is not associated with molluscs ------------ (a) they are triploblastic animals (b) they are bilaterally symmetrical animals (c) they are coelomate animals (d) they are radially symmetrical animals. 4)Respiratory organ of molluscs is known as ---------- (a) haemocyanin (b) ctenidia (c) podia (d) hump.

4. 5) Molluscs are grouped majorly into -------- classes (a) four (b) seven (c) six (d) eight. 6) Dentalium belongs to class ---------- (a) polyplacophora (b) aplacophora (c) cephalopoda (d) scaphopoda.

5. 7) Nautilus loligo belongs to the class ------- (a) scaphoda (b) aplacophora (c) cephalopoda (d) polyplacophora. 8) Main diagnostic feature of Gastropods is that they undergo--------- (a) metamorphosis (b) ecydysis (c) moulting (d) torsion.

6. 9) Torsion is the characteristic of ---------- (a) gastropods (b) scaphopoda (c) aplacophora (d) polyplacophora 10) Phylum Mollusca is considered--------- (a) largest phylum of animal kingdom (b) exclusively marine phylum (c) second largest animal phylum (d) exclusively fresh water phylum.

7. 11)Molluscs are---------- (a) metamerically segmented animals (b) annulated animals (c) having only head and trunk (d) unsegmented animals. 12) The elephant tusk shell is -------- (a) Cypraea (b) Linax (c) Dentalium (d) Nautilus.

8. 13) Mytilus belongs to class --------- (a) Gastropoda (b) Polyplacophora (c) Bivalvia (d) Monoplacophora. 14) Squid, Cuttle fish, and Octopus belongs to class-------- (a) Secapoda (b) Scaphoda (c) Cephalopoda (d) Apoda.

9. 15) The second largest and successful phylum after arthropoda is-------- (a) Annelida (b) Mollusca (c) Chordata (d) Coelentrata. 16) The term Mollusca is derived from the latin word------ (a) mollis (b) moolis (c) moliss (d) mullis.

10. TUTORIAL QUESTIONS 17. Tube feet are characteristic of (a) cuttle fish (b) starfish (c) jelly fish (d) crayfish 18. Starfish moves by (a) lobopodia (b)rhizopodia (c) tubefeet (d) cephalopodia

11. 19.Radial symmetry is found in (a) Ascaris (b) Sponge (c) Starfish (d) Mollusca 20.Asteria belongs to………. (a) Asteroidea (b) Echinoidea (c) Ophiurodea (d) Holothuroidea

12. 21.Common name of Asterias is ………. (a) Sea pentagon (b) Brittle star (c) Starfish (d) Basket star 22.The organs of starfish that keeps dirt off it is called (a) Pedicellariae (b) Papulae (c) Body wall (d) Podia

13. 23.Function of pedicellariae is (a) Capturing prey (b) Capture and removal of debris (c) Capturing, removal of debris and minute organisms (d) Help in respiration 24.Locomotory organs of starfish are (a) Podia (b) Polian vesicles (c) Vacuole (d) None

14. 25. Characteristic feature of phylum Echinodermata is (a) Haemal system (b) Water vascular system (c) canal system (d) Radial symmetry. 26. In which class of phylum Echinodermata is Arbacia lixula found? (a) Asteroidea (b) Holothuroidea (c) Ophiuroidea (d) Echinoidea

15. 27. Anterdon rosacea belongs to class (a) Ophiuroidea (b) Echinoidea (c) Crinoidea (d) Echinodermata 28. Aristotle’s lantern is present in (a) Firefly (b) Starfish (c) Sea urchin (d) Sea anemone

16. 29.Typical example of “Ophiuroidea” is (a) Starfish (b) Brittle star (c) Sea urchin (d) Sand dollar 30.Aristotle’s lantern is useful in (a) Photoreception (b) Chewing (c) Excretion (d) Respiration

17. 31.The larva that occurs in the development of holothurians is (a) Auricularia (b) Brachiolaria (c) doliolaria (d) Bipinnaria 32.Aristotle’s lantern is found in (a) Cucumaria (b) Antedon (c) Echinus (d) Opiothrix

18. 33.Excretory organs are absent in (a) Nematoda (b)Echinodermata (c) Crustacea (d) Onychophora. 34.Brittle star belongs to the class (a) Asteroidea (b) Ophiuroidea (c) crinoidea (d) Echinoidea

19. 35.The locomotory organs of echinoderms are called (a) Parapodia (b) Pseudopodia (c)Tube feet (d) Setae 36.Excretory products of echinoderms are (a) urea (b)Urea and creatine (c)Ammonia (d) Uric Acid

20. 37.Sea lily and feather star belong to class (a) Echinoidea (b) Crinoidea (c) Holothuroidea (d) Asteroidea 38.Which phylum of animal is exclusively marine? (a) Mollusca (b) Coelentrata (c) Echinodermata (d) Porifera.

21. 39.Water vascular system is identification of (a) Porifera (b) Coelentrata (c) Arthropoda (d) Echinodermata 40. Free moving Echinodermata are (a) Subphylum-Eleutherozoa (b) Subphylum-Pelmetozoa (c) both of them (d) None of them