Biology (Botany) – Section I – Science- Important Question Bank for Maharashtra Board HSC Examination

1. What is biomagnifications?
2. What is respiratory quotient (RQ)? Why RQ in anaerobic respiration is infinite?
3. Draw a neat labeled diagram of the hair pin model of t-RNA.
4. Draw a neat labeled diagram showing steps of PCR
5. Describe the ultra structure of chloroplast. Add a note on the significance of photosynthesis.
6. Describe characteristics of genetic code
7. distinguish between light and dark reaction.
8. Define tissue culture. Describe production of disease – free plants and secondary metabolites
9. describe Watson and crick’s model of the DNA
10. give schematic representation of Krebs cycle
11. Define bio-fertilizer. give its important
12. describe the process of double fertilization in angiosperms
13. Describe the Source of oxygen in photosynthesis
14. Describe the steps involved in recombinant DNS technology.
15. Distinguish between Self pollination and Cross pollination.
16. Describe the methods of conservation of forests
17. Explain blue green algae as a bio fertilizer
18. Sketch and label male gametophyte in angiosperms
19. Vegetative propagation in angiosperms
20. RNA and DNA (Distinguish)
21. Biopatent
22. Angiosperm in detail
23. Explain the development of male gametophyte of angiosperms
24. Describe the advantages and disadvantages of cross pollination
25. Describe the methodology of tissue culture.
26. what is Biopiracy ? examples of Biopiracy
27. explain the structure of male gametophyte of angiosperms with the help of a suitable diagram
28. replication
29. RNA in detail
30. Explain C3 pathway. How does it differ from C4 Pathway
31. Describe the methods of conservation of forests
32. Global Warming is caused by Green House Effect.Justify
33. Describe any ‘two’ natural methods of vegetative propagation in Angiosperms with suitable examples.
34. Define geitonogamy and xenogamy. Give advantages of self pollination and cross pollination.Explain how dichogamy favours cross pollination.
35. V.S. of anatropous ovule
36. what is anaerobic respiration? Explain mechanism of anaerobic respiration
37. Define Gluycolysis. Give its schematic representation and write significance.
38. Describe advantages of Remote sensing technique with respect to Vegetation..
39. Describe mechanism of opening and closing of biopiracy.
40. Sketch and label ‘tubular tower fermenter’.
41. Define the term ‘leaching’
42. What is ‘double fertilization’? Describe it with the help of a neat and well labelled diagram. ive its importance.
43. Explain how suspension culture is prepared from callus.
44. Sketch and label ‘ultrastructure of mitochondrion’.
45. From which microbial source can pectinase be obtained?
46. Describe floral adaptations in Anemophily and Entomophily.
47. explain the bio synthetic phase of photosynthesis
48. With the help of a neat and labelled diagram explain VAM (vesicular arbuscular mycorrhizae).

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