(i) What is fertilisation?

(ii) Name the type of fertilisation in human.

(iii) Where does it mainly occur?

(iv) How does fertilisation take place in human female?


(i) Fertilisation is the fusion of a male gamete (sperm) and a female gamete (ovum or egg) to form of zygote during sexual reproduction.

(ii) The type of fertilization that takes place in in humans is internal fertilisation.

(iii) Fertilization occur in the fallopian tubes of the female reproductive system.

(iv) When tha male gamete or sperm reaches the female gamete ova, one of the sperms fuses with the egg leading to fertilization. The nuclei of the sperm and the egg fuse to form a single nucleus. This results in the formation of a fertilized egg or zygote.

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Draw and explain the female reproductive organs in humans.



Female reproductive organs consist of a pair of ovaries, oviduct or fallopian tubes and uterus. Ovaries produce the female gamete called Ova. Every month an ovary produces an ovum. The ovum and sperm fertilize inside fallopian tubes and the fertilized zygote travels to the uterus and attach with its wall to develop into the foetus.


Female reproductive organs consist of a pair of ovaries, oviduct or f


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Tadpole is the developing stage of

  • Dogs.

  • Cats.

  • Frogs.

  • Humans.


C.

Frogs.

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The animals that produce young ones are called

  • Oviparous

  • Viviparous

  • Both (a) and (b)

  • None of the above


B.

Viviparous

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A fusion of male and female gametes usually takes place inside the

  • Fallopian tube.

  • Ovary.

  • Uterus.

  • Zygote.


A.

Fallopian tube.

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