Biology (Theory)

1. Describe structure and function of an Ecosystem
2. What do you understand by  Biodiversity ? Explain ecological diversity in detail,
3. What is nutrient cycling ? Discuss the Carbon cycle in nature.
4. Difference between-

(i)Zoospore and Zygote

ii) Rhizome and Corm

(iii)Total stem parasite and Total root parasite

(iv) Interferons and Antibodies

(v) Embro sac and Endosperm

vi) mRNA and tRNA ?

5. What is semi-conservative replication ? How did Meselson and Stal prove that by experiment ?

6. Compare Neanderthal and Cromagnen man. Out of both who is more nearest to present man and why ?

7. What are contraception ? Explain different method of contraceptions.

8. What are variations? Describe the role of variations in evolution

9. What does mean by Transcription? Describe the process of Transcription

10 Draw a neat and well labelled diagram of Graafian follicle.

11. Draw a neat and well labelled diagram fertilized embryo sac of Angiospermic  plant

12. Draw a well labelled diagram of sperm ?

13.Define ecological pyramids and describe the pyramid of number

14. Explain microsporogenesis in flowering plants

15. Write a short notes on the following

i) Adaptation of desert plants

ii) Importance of light to plants

iii) restriction enzyme

iv) chitinase

v) importance of transgenic plant

vi) Bt cotton

16. what are cry proteins? Name an organism that produce it

17. How microorganism help us to make drinks and baking?

18. A women having blood group O married with a man having blood group AB. Which blood group may be expected in their progeny? Explain with diagrammatic sketch.

19. Explain corpus luteum and colostrums?

20. What is the difference between Menstrual cycle and Estrous cycle ?

21. Explain, what is Idiogram and Karyograph.

22. Write the name of main biotic factors of pond ecosystem ?

23. Draw a well labelled diagram of female reproductive organ ?

24. Draw a well labelled diagram of endosperm ?

25. What is the special feature of milk of transgenic cow Roji ?

26. What is Methanogens ?

27. How misconceptions and malcustoms present in society are helpful in population growth ?

28. In a cross between two tall pea plants, some of the offsprings produced were dwarf. How this is possible ? Show with the help of punnett square.

29. Wings of butterfly, Bat and Birds act as flying, but however these are called analogous organs ?

30. In our society woman are blame to give birth to daughters. Can you explain why this is not correct ?

31. Explain following-

(i) Mycorrhiza

(ii) Palindrome

(iii) Sickle cell anaemia

iv) Explain allergy and carcinogens ?

32. What is algal bloom ? Also define its effect

33. What is the role of micro organism in seavage treatment ?

34. Why sharing of injection needles between two individuals is not recommend ?

35. Write any four uses of DNA Finger printing?

36. Write four majors to reduce vehicle pollution ?

37. What are fossils ? What are the methods to calculate age of fossils ?

38. Where and how complete development and nutrition of embryo takes place in viviparous animals?

39. Differentiate between Repetitive  DNA and Satellite DNA

40. What is passive immunity ? Give its two examples

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