Advertisements
Advertisements
प्रश्न
Define the four stages in the uterine cycle.
Advertisements
उत्तर
The uterine cycle consists of four distinct stages as follows :
(i) Menstruation: It lasts for about five days.
(ii) Follicle stage: From the end of menstruation to the release of the ovum, it lasts for 10-14 days.
(iii) Ovulation: It is the release of ovum from the ovary.
(iv) Corpus luteum stage: It lasts from ovulation to menstruation for about 10-14 days.
संबंधित प्रश्न
List two example of each diseases caused due to (i) bacterial infection and (ii) viral infection. Which device or devices may be used to prevent the spread of such diseases.
Write the function of the following part in a human female reproductive system:
Fallopian tube
Mention two functions of human ovaries.
What is gestation period?
During adolescence, several changes occur in the human body. Mark one change from the following associated with sexual maturation in boys.
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?
Describe in brief the role of seminal vesicle in human male reproductive system.
In humans, ______ chromosome is responsible for maleness.
Sketch and label human female reproductive system.
Is the woman responsible for sex-determination of child? Justify your answer.
Mention any two changes that are common to both boys and girls in early teenage years.
