2nd PUC science biology papers

Here I am looking for the 2nd PUC science biology papers, kindly provide me the same……..

As you are looking for the 2nd PUC science biology papers, here I am uploading a pdf file having the same. There are descriptive types of the questions available. This is the content of attachment:

1. Name the hormone that induces rupturing of Graafian follicle.
2. Sertoli cells are very much essential during spermatogenesis. Why?
3. Define convergent evolution.
4. Name the test conducted to confirm Typhoid fever.
5. What is micropropagation?
6. What are Flocs?
7. Mention the uniqueness of DNA polymerase used in PCR.
8. Mention the reason behind auto-immune disease.
9. Why Western Ghats are considered as one of the biodiversity hotspots?
10. "Some animals, if unable to migrate, might avoid the stress by escaping in time". Justify the statement
citing one example.
PART-B
.Answer any FlVE of the following questions in 3-5 sentences each, wherever applicable: 5~2.10
11. What is parthenogenesis? Name an animal showing this.
12. Differentiate between incomplete dominance and co dominance.
13. "Darwin's finches represent one of the best examples for adaptive radiation". Comment.
14. Draw a neat labeled diagram of an antibody molecule.
15. List the objectives of biofortification.
16. Draw a neat labeled diagram of sparged stirred tank bioreactor.
17. Write a note on co-extinction.
18. "India is rich in genetic diversity". Justify this statement by giving two examples.
PART-C
Answer any FIVE of the following Questions in 40-80 words each, wherever applicable. 5x3=15
19. Name the following:
i) Asexual reproductive structures of Hydra.
ii) Vegetative propagules of Agave.
iii)The plant that flowers once in twelve years.
20. Differentiate between microsporogenesis and megasporogenesis.
21. Write the pedigree analysis chart for myotonic dystrophy. Mention the importance of pedigree
analysis.

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