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प्रश्न
What is sexual reproduction? What are its essential features?
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उत्तर
It is a type of reproduction usually found in higher animals and plants where male and female sexes produce male and female heterogametes separately, which on fertilisation produce a zygote.
संबंधित प्रश्न
Write the function of the following part in a human female reproductive system:
Uterus
Give scientific reasons: Mature erythrocytes in humans lack nucleus and mitochondria
Given below are diagrams showing the different stages in the process of fertilisation of an egg. in the human female reproductive tract.
Study the diagrams and answer the questions:
1) Arrange the letters given below each diagram in a logical sequence to show the correct order in the process of fertilisation.
2) Where does fertilisation normally take place? and What is ‘Implantation’ that follows fertilisation?
3) Mention the chromosome number of the egg and zygote in humans.
4) Explain the term ‘Gestation’. How long does Gestation last in humans?
5) Draw a neat, labelled diagram of a mature human sperm.
Give biological explanations for All the food chains begin with green plants.
Mention two functions of human testes.
The normal gestation period in humans is:
Describe in brief the role of testis in human male reproductive system.
Draw a diagram to display the vertical view of human female reproductive system and label the following parts in the diagram:
(1) Ureter
(2) Ovary
(3) Funnel of fallopian tube
(4) Urethra.
The mature sperms are stored in the ____________.
If for some reason, the vasa efferentia in the human reproductive system get blocked, the gametes will NOT be transported form ______
