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12th Standard English Medium Biology (Botany) Subject Book Back 3 Mark Questions with Solution Part - I

12th Standard

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Biology

Time : 01:00:00 Hrs
Total Marks : 75

    3 Marks

    25 x 3 = 75
  1. What is Cantharophily.

  2. Define the term Diplospory

  3. Why does the zygote divides only after the division of Primary endosperm cell.

  4. “Endothecium is associated with dehiscence of anther” Justify the statement

  5. What are multiple alleles?

  6. Explain the law of dominance in monohybrid cross.

  7. What is meant by cytoplasmic inheritance

  8. Write the salient features of Sutton and Boveri concept.

  9. Write the steps involved in molecular mechanism of DNA recombination with diagram.

  10. Mention the application of Biotechnology.

  11. Is there any possibilities to transfer a suitable desirable gene to host plant without vector? Justify your answer.

  12. Give the examples for micro propagation performed plants .

  13. Based on the material used, how will you classify the culture technology? Explain it.

  14. What is mutualism? Mention any two example where the organisms involved are commercially exploited in modern agriculture.

  15. Mention any two significant roles of predation plays in nature.

  16. Water is very essential for life. Write any three features for plants which enable them to survive in water scarce environment.

  17. What is vivipary? Name a plant group which exhibits vivipary.

  18. How is rhytidome act as the structural defence by plants against fire?

  19. What is seed ball?

  20. Name of the food chain which is generally present in all type of ecosystem. Explain and write their significance.

  21. Generally human activities are against to the ecosystem, where as a student how will you help to protect ecosystem?

  22. How do sacred groves help in the conservation of biodiversity?

  23. What are the different types of hybridization?

  24. Differentiate bio-medicines and botanical medicines.

  25. What are millets? What are its types? Give example for each type.

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