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प्रश्न
Give biological explanations for The placenta is an important structure for the development of a foetus
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उत्तर
The placenta allows diffusion of food and oxygen from mother to foetus and that of nitrogenous waste and CO2 from foetus to mother
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संबंधित प्रश्न
Name any three parts of the female reproductive system in human beings. Write one function of each.
If a woman is using copper-T for contraception, will it protect her from sexually transmitted diseases?
State the changes that take place in the uterus when Female gamete/egg is not fertilised
fill in the blanks with suitable functions: Seminiferous Tubule and _____
What are the female sex cells in humans called?
What do the ovaries in a woman produce?
Fertilisation results immediately in the formation of :
(a) a zygote
(b) an embryo
(c) a placenta
(d) a foetus
Sketch and label human female reproductive system.
Is the woman responsible for sex-determination of child? Justify your answer.
Define the following:
Sexual reproduction
Column ‘II’ is a list of items related to ideas in Column ‘I’. Match the term in Column ‘II’ with a suitable idea given in Column ‘I’.
| Column I | Column II |
| (i) Acrosome
(ii) Ovulation (iii) Sperm (iv) Menopause (v) Implantation (vi) Fertilization (vii) Contraception in males |
(a) Male gamete
(b) Oviduct (c) Uterus (d) Spermatozoa (e) Progesterone (f) Stoppage of the menstrual cycle (g) Sudden change in genes |
