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Mention four 'Evil Quartet which cause d...

Mention four 'Evil Quartet which cause depletion of biodiversity.

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(i) Coextinction
(ii) Over-exploitation
(iii) Alien species invasion
(iv) Habitat loss and fragmentation
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OSWAAL PUBLICATION-SOLVED PAPER II PUC ANNUAL EXAMINATION 2019-PART-D
  1. Mention two assumptions of Oparin and Haldane with reference to 'Origi...

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  2. Name a technology that has successfully increased herd size of cattle ...

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  3. Mention four 'Evil Quartet which cause depletion of biodiversity.

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  4. Write two suspended activities in animals against abiotic stresses wit...

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  5. Among vertebrates, which group of animals has the highest number in gl...

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  6. What is megasporogenesis? Explain the development of eight nucleate em...

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  7. What are Contraceptives? Explain four different non-surgical contracep...

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  8. What is incomplete dominance? Explain inheritance of flower colour in ...

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  9. Explain the role of three organisms as biocontrol agents.

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  10. What is the significance of BOD?

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  11. Give an example for a fungus found in Mycorrhiza

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  12. Explain five benefits of creating transgenic animals.

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  13. Tropical region has greater biodiversity than temperate region. Justif...

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  14. The use of CNG is better than petrol or diesel. Give four reasons.

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  15. Write the schematic representation of spermatogenesis.

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  16. Write the two events that occur in the ovary and uterus during the fol...

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  17. Why DNA replication is called semiconservative?

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  18. Draw a neat labelled diagram of neuron.

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  19. Mention two assumptions of Oparin and Haldane with reference to 'Origi...

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  20. Name a technology that has successfully increased herd size of cattle ...

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