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What are gametes ?...

What are gametes ?

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**Step-by-Step Solution:** 1. **Definition of Gametes**: Gametes are the reproductive cells of any organism. They are essential for sexual reproduction. 2. **Types of Gametes**: There are two main types of gametes: - **Male Gametes**: In humans, male gametes are called sperm. - **Female Gametes**: In humans, female gametes are known as ova or eggs. ...
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The two glands A and B which occur in pairs, are present in the endocrine system of humans. The pair of glands A is found onlyin females whereas the pair of glands B occurs only in males. The glands A make and secrete two hormones C and D whereas glands B make and secrete only one hormone E. In addition to hormones, glands A make gametes F whereas glands B make gametes G. What are glands A? What are hormones C and D? (c) What are glands B? Name the hormone E. (d) What are gametes (i) F, and (ii) G? (e) Which event in the life of males and females is associated with the secretion of hormones, C,D and E?

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LAKHMIR SINGH & MANJIT KAUR-REPRODUCTION IN ANIMALS-EXERCISE
  1. Explain how, chicks are born. How much time does the embryo present in...

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  2. In which of the following animals the embryos develop fully inside the...

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  3. What are gametes ?

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  4. In which sort of reproduction are gametes involved ?

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  5. What is formed when two gametes fuse ?

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  6. What is this act of fusion called ?

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  7. Match the terms given in column A with those given in column B :

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  8. Differentiate between internal fertilisation and external fertilisatio...

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  9. What is meant by 'cloning' ? State whether gametes are involved in clo...

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  10. What is meant by 'reproduction' ? Why is it essential ?

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  11. Define asexual reproduction. Name two methods of asexual reproduction ...

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  12. What is a clone ? Name one famous clone.

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  13. Explain the term 'fertilisation'. Describe the process of fertilisatio...

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  14. Draw a labelled diagram to show the fertilisation of a human egg by a ...

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  15. What type of couples are helped to have babies by the in vitro fertili...

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  16. Describe the 'in vitro fertilisation' technique of reproduction in hum...

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  17. What are viviparous animals ? Give two examples of viviparous animals.

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  18. What are oviparous animals ? Give two animals of ovipaorus animals.

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  19. How does an Amoeba reproduce ? Describe with the help of labelled diag...

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  20. How does a Hydra reproduce ? Explain with the help of labelled diagram...

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