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प्रश्न
Give biological explanations for The placenta is an important structure for the development of a foetus
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
State its functions in case of a pregnant human female.
Give scientific reasons: Mature erythrocytes in humans lack nucleus and mitochondria
Describe in brief the structure of placenta
Write the names of male sex hormone?
How long does a human baby take to develop before birth?
What is the name of the narrow opening between the uterus and the vagina.
Diagram shows the reproductive system of female human beings:
(i) Name the parts numbered 1 to 14.
(ii) Normally, after how many days does an ovary release an egg?
(iii) Where are the sperms released during coitus?
(iv) What is the role of sperms after their ejaculation in vagina?
(v) What is the function of the organ numbered 5?
(vi) What is the gestation period in human?
What do you understand by an inguinal hernia?
Choose the Odd One Out:
Multiple Choice Question:
What will happen if the temperature of the scrotal sacs temporarily goes to about 2°C lower than body temperature?
