Study Material
ANIMAL DIVERSITY -I
Very Short Answer Questions
Q1. What physical feature pertaining to the organism and its medium do you notice in a sponge body from which sponges can be/were identified as animals and not plants? What do you call the region in the sponge body in which you noticed that feature?
Q2. What are the different structures that makeup the internal skeleton of a sponge? What are the chemicals involved in the formation of these structures?
Q3. What are the functions of canal system of sponges?
Q4. What are the two chief morphological bodyforms of cnidarians? What are their chief functions?
Q5. What is metagenesis? Animals belonging to which phylum exhibit metagenesis?
Q6. What is the cnidarian group with quantitatively/relatively large mesoglea? What is the significance of such a well developed mesoglea pertaining to the aquatic life of that group?
Q7. What is the chief difference between the hydrozoans and the rest of the cnidarians regarding the germinal layer(s) in which its defensive structures or cells of defence occur?
Q8. What are the excretory cells of flatworms called? What is the other important function of these specialized cells?
Q9. Distinguish between amphids and phasmids
Q10. What is the essential difference between a flat worm and a round worm with reference to the perivisceral area of their bodies?
Q11. How do you account for the origin of the perivisceral space in the body of a nematode and an annelid?
Q12. What is metamerism? What is the essential difference between the mode of formation of individual morphological body units of a tapeworm and those of an earthworm?
Q13. How do you distinguish a hirudinean from the rest of the annelids, based on the morphological features pertaining to metamerism? How does the coelom of a leech differ from the coelom of an earthworm with reference to its contents?
Q14. What do you call the locomotor structures of Nereis? Why is Nereis called a polychaete?
Q15. What is botryoidal tissue?
Q16. What is the difference between the epidermis of a nematode and that of an annelid? How does a nematode differ from an annelid with reference to the musculature of the body wall?
Q17. What do you call the first and second pairs of cephalic appendages of a scorpion?
Q18. What is the uniqueness about the first two pairs of cephalic appendages of a crustacean compared to those of the other extant arthropods?
Q19. What is the sub-phylum to which ticks and mites belong? How do you distinguish them from the insects with reference to their walking legs?
Q20. What are the respiratory structures of Limulus and Palamnaeus respectively?
Q21. What are antennae? What is the arthropod group without antennae?
Q22. What do you call the perivisceral cavity of an arthropod? Where from is it derived during development?
Q23. Which arthropod, you have studied, is called a living fossil ? Name its respiratory organs?
Q24. How do you identify a Chiton from its external appearance? How many pairs of gills help in the respiration of Chiton?
Q25. What is the function of radula? Give the name of the group of molluscs which do not possess a radula?
Q26. What is the other name for the gill of a mollusc? What is the function of osphradium?
Q27. What is Aristotle s lantern? Give one example of an animal possessing it?
Q28. What is the essential difference between the larvae and adults of echinoderms, symmetry wise?
Q1. Name the phylum to which comb jellies belong and mention its important features
Q2. Write short notes on the salient features of the anthozoans
Q3. What is the class to which the flukes belong? Write short notes on the chief characters of that group?
Q4. What are the salient features exhibited by polychaetes?
Q5. How do the hirudineans differ from the polychaetes and oligochaetes?
Q6. What are the chief characters of Oligochaeta?
Q7. What are the chief characters of the crustaceans?
Q8. Mention the general characters of Arachnida
Q9. Compare briefly a centipede and a millipede
Q10. Cephalopods show several unique or advanced features when compared to the other molluscs Discuss briefly
Q11. Which class of Mollusca represents the primitive molluscs? What are their chief features?
Q12. What are the salient features of the echinoids?
Q13. Mention the salient features of Holothuroidea
Q14. Give a brief account of the general characters of hemichordates