Advertisements
Advertisements
Question
What is placenta?
Advertisements
Solution 1
The placenta is an organ attached to the lining of the womb during pregnancy. The placenta is composed of both maternal tissue and tissue derived from the embryo. It contains blood spaces on the mother’s side and villi on the embryo’s side
Solution 2
The placenta is a temporary endocrine source that connects the foetus to the expectant mother's uterine wall, allowing for physiological exchange.
APPEARS IN
RELATED QUESTIONS
Suggest three contraceptive methods to control the size of human population, which is essential for the health and prosperity of a country. State the basic principle involved in each.
The diagram given below is that of a developing human foetus. Study the diagram and then answer the questions that follow:
(i) Label the parts numbered 1 to 3 in the diagram.
(ii) Mention any two functions of the part labelled 2 in the diagram.
(iii) Explain the significance of the part numbered 3 in the diagram.
(iv) Define the term ‘Gestation’. What is the normal gestational period of the developing human embryo?
(v) Mention the sex chromosomes in a male and female embryo.
Give biological explanations for All the food chains begin with green plants.
Do all organisms give birth to individuals like humans?
Describe in brief the role of prostate gland in human male reproductive system.
Choose the correct answer:
Binary fission is a method of __________
Name the following:
Two accessory glands in the male reproductive system.
Give Technical Term:
What are the age restrictions for marriages by law for boys and girls in India?
Choose the Odd One Out:
Gestation period in man
