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प्रश्न
Draw a well labelled diagram of L.S. human testis.
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उत्तर २
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संबंधित प्रश्न
Name one sexually transmitted disease for which no definite cure has been found so far. What is the causative organism of this disease?
Which method of contraception prevents fertilised egg from being implanted in the uterus?
What substances are contained in oral pills, used as contraceptives? How do they work?
What is the name of surgical method of birth control (or preventing pregnancy) which is carried out in men?
One of the following is a surgical method which prevents the sperms from reaching the ovum and pregnancy does not occur. This method is :
(a) IUCD
(b) vasectomy
(c) condom
(d) tubectomy
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?
Differentiate between the following:
Spermatogenesis and oogenesis
Give the role of amniocentesis.
Name the kind of diseases/disorders and any two symptoms that are likely to occur in humans if Mutation in the gene that codes for an enzyme phenylalanine hydroxylase occurs.
RCH stands for ______.
RCH stands for ______.
Why does bread mould grow profusely on a moist slice of bread rather than on a dry slice of bread?
Would a Planaria cut vertically into two halves regenerate into two individuals? Complete Figure D and E by indicating the regenerated regions.
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| A | B | C | D | E |
Reproduction is linked to stability of population of a species. Justify the statement.
How are general growth and sexual maturation different from each other?
What would be the ratio of chromosome number between an egg and its zygote? How is the sperm genetically different from the egg?
Select the statement(s) that relate to reproductive health:
Where was "Saheli" developed?
In India, the action plans for family planning were initiated in the year ______
Enumerate and describe any five reasons for introducing sex education to school-going children.
