Advertisements
Advertisements
Question
Mention the importance of the position of the testes in humans.
Advertisements
Solution
The testes are positioned in such a way hanging out from the body in scrotal sac that provides optimal temperature 2°C to 3°C lower than internal body temperature for effective sperm production.
RELATED QUESTIONS
Describe placenta structure.
What are the changes seen in girls at the time of puberty?
The diagram given below is that of a developing human foetus. Study the diagram and then answer the questions that follow:
- Label the parts numbered 1 to 3 in the diagram.
- Mention any two functions of the part labelled 2 in the diagram.
- Explain the significance of the part numbered 3 in the diagram.
- Define the term ‘Gestation’. What is the normal gestational period of the developing human embryo?
- Mention the sex chromosomes in a male and female embryo.
What is the scientific name of womb?
Where does fertilisation take place in human females?
X and Y are two human beings. The organ A in the reproductive system of X releases a mature gamete B once a month which goes into a tube-like structure C through a funnel-like opening. The organ D in the reproductive system of Y makes and releases gametes E which pass through a duct F and are introduced by an organ of Y, into the body of X. B and E fuse together in C to form a new cell G. The cell G divides repeatedly to form a ball of cells H which gets embedded in the lining of organ I of reproductive system of X where it grows and develops into a baby.
(a) Name (i) organ A, and (ii) gamete B.
(b) Write two names of tube-like structure C.
(c) Name (i) organ D, and (ii) gamete E.
(d) Write two names of duct F.
(e) Name (i) cell G (ii) ball of cells H, and (iii) organ I.
(f) Out of X and Y, which one is (i) male, and (ii) female?
Give the names:
Methods of family planning.
What is reproduction? List its two types.
Name the following:
Male and Female organs on specific individuals.
The membranous cover of the ovum at ovulation is ______.
