I. Simple answer questions 10 X1= 10 Marks
Answer in a word, or a phrase or a sentence.
1. Define Telolectithal egg.
2. What is Blastocyst Define.
3. Define ecosystem.
4. What are oviparous animals
5. What is Anadromous migration
6. Define climatic climax.
7. Define aquaculture.
8. Name any two endangered mammals.
9. What is acid rain
10. What are Morphogenetic movements.
II. Short answer questions
Answer any FIVE of the following. 5X 15 Marks
11. Explain the classification of eggs based on the amount of yolk.
Contd…2



12. Write a note on parasitic food chain.
13. Explain ecological niche.
14. Draw a neat labeled diagram of V.S. of Blastula of Frog.
15. Explain parental care in Ichthyophis.
16. Explain courtship in common terns.
17. Write a note on National parks.
III. Medium answer questions
Answer any FIVE of the following. 5X6= 30 Marks
18. Discuss the causes for depletion of wild life.
19. Explain catadromous migration with an example.
20. List the significances of courtship behavior.
21. Explain pond ecosystem with a neat labeled diagram.
22. Write a note on fate map.
23. Explain hen's egg with a neat labeled diagram.
24. Explain head and trunk organizer.
IV. Long answer questions 2X10=20 Marks
Answer any TWO of the following.
25. Explain the sources, causes, effects and controlling measures of water pollution.
26. Classify the placenta based on the distribution of Villi.
27. Briefly explain techniques of culturing of Indian major carps. Add a note on
the by products of Fisheries.
28. Explain the zonation of sea, biota and add a note on deep sea adaptations.
V. Compulsory question for 85 marks scheme only. Long answer questions.
Answer any ONE of the following. 1X10=10 Marks
29. Explain different types of ecological pyramids.
30. What is gastrula Explain the process of gastrulation in Frog.