Advertisements
Advertisements
Question
Reproduction is linked to stability of population of a species. Justify the statement.
Advertisements
Solution
During reproduction, DNA is passed from one generation to another so DNA is copied with consistency but with minor variations. This helps the maintenance of body design features that allow the organism to use a particular niche where it lives. Reproduction is therefore, linked to the stability of populations of species.
APPEARS IN
RELATED QUESTIONS
Mention the problems that are taken care of by reproduction and child health care programme.
List four points of significance of reproductive health in a society. Name any two areas related to the reproductive health which have improved over the past 50 years in our country.
Suggest the aspects of reproductive health which need to be given special attention in the present scenario.
What are the measures one has to take to prevent from contracting STDs?
State True/False with explanation.
Creating awareness about sex-related aspects is an effective method to improve reproductive health of the people.
Name one method of contraception which also protects against sexually transmitted diseases.
Name the contraceptive device used by the human males which acts as a sheath over the male organ and traps the sperms in it.
Name two devices used in the barrier method of birth control.
Which method of contraception prevents fertilised egg from being implanted in the uterus?
How does copper-T prevent pregnancy?
Which of the following method of contraception protects a person from acquiring a sexually transmitted disease?
(a) oral pills
(b) condom
(c) copper-T
(d) surgery
In the surgical method of birth control available for males, the structures A in the reproductive system are cut and ligated (tied up) at both ends. This prevents the reproductive cells B from coming out from the organs C where they are made in the male body. Since B cannot come out from the male body, they cannot fuse with cell D in the body of a female and hence pregnancy is prevented.
(a) What are structures A?
(b) What are cells B?
(c) Name the organs C.
(d) What is cell D?
(e) What is the name of this surgical procedure for birth control available to males?
What is contraception ? List three reasons for adopting contraceptive methods.
Give the role of amniocentesis.
Answer the following question.
What are the goals of RCH programme.
Why is it necessary to maintain reproductive health? Which precautions one should follow to maintain reproductive health?
A national level approach to build up a reproductively healthy society was taken up in our country in ______.
What would be the ratio of chromosome number between an egg and its zygote? How is the sperm genetically different from the egg?
In the following figure, mark the positions of the endocrine glands which release the hormones that:
- control the release of sex hormone
- are responsible for the secondary sexual characters in boys.
- prevent diabetes.
- maintain the correct salt balance in the blood.
