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Define external fertilisation. Mention i...

Define external fertilisation. Mention its disadvantages.

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NCERT TELUGU-REPRODUCTION-EXERCISES
  1. Why is reproduction essential for organisms?

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  2. Which is a better mode of reproduction: sexual or asexual? Why?

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  3. Why is the offspring formed by asexual reproduction referred to as clo...

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  4. Offspring formed due to sexual reproduction have better chances of sur...

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  5. How does the progeny formed from asexual reproduction differ from tho...

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  6. Distinguish between asexual and sexual reproduction. Why is vegetative...

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  7. What is vegetative propagation? Give two suitable examples.

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  8. Define (a) Juvenile phase, (b) Reproductive phase, (c) Senescent...

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  9. Higher organisms have resorted to sexual reproduction in spite of its ...

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  10. Explain why meiosis and gametogenesis are always interlinked?

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  11. Identify each part in a flowering plant and write whether it is haploi...

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  12. Define external fertilisation. Mention its disadvantages.

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  13. Differentiate between a zoospore and a zygote.

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  14. Differentiate between gametogenesis from embryogenesis.

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  15. Describe the post-fertilisation changes in a flower.

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  16. What is a bisexual flower? Collect five bisexual flowers from your nei...

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  17. Examine a few flowers of any cucurbit plant and try to identify the st...

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  18. Why are offspring of oviparous animals at a greater risk as compared t...

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