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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.
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संबंधित प्रश्न
Describe the function of placenta.
Give technical terms for Thin walled sac of skin which covers the testes
Give biological explanations for The placenta is an important structure for the development of a foetus
What is the name of the process in which thickened uterus lining alongwith blood vessels is removed from the body of a human female through vaginal bleeding?
What is meant by implantation?
The germ cell A produced by a person X is round in shape and it fuses with another germ cell B having a long tail and produced by a person Y. The fusion of A and B produces a new cell C. The cell C divides repeatedly and grows inside the organ D of person X to form E in which the body features of the unborn baby are not much developed. E grows further to form F in which the various body features of the unborn baby (like hands, legs, head, eyes, and ears, etc.) can be identified. F grows further and ultimately forms a baby. What are A, B, C, D, E and F? Out of the two persons X and Y, which one is male and which one female?
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.
Give Reasons
At the time of birth, the testes descend into the scrotal sacs.
Name the Following
Days in the human gestation period.
