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Question
The diagram below represents two reproductive cells A and B. Study the same and then answer the questions that follow:
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- Identify the reproductive cells A and B.
- Name the specific part of the reproductive system where the above cells are produced.
- Where in the female reproductive system do these cells unite?
- Name the main hormones secreted by the (1) ovary (2) testes.
- Name an accessory gland found in the male reproductive system and state the function of its secretion.
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Solution
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- Ovum
- Sperm
- Follicles of ovary → ovum, Seminiferous tubules in testes → sperm
- Fallopian tube
- (1) Oestrogen, Progesterone,
(2) Testosterone - The glands found in the male reproductive system are the prostate gland and the seminal vesicle.
Function of the prostate gland: The secretion of thin, milky, alkaline fluid enhances sperm motility.
Function of the Seminal Vesicle: The seminal vesicles produce an alkaline fluid. It is combined with sperm to produce spermatic fluid or semen.
RELATED QUESTIONS
Name the parts of the human female reproductive system where
i. fertilisation takes place
ii. implantation of the fertilised egg occurs
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.
What is the name of the process in which thickened uterus lining alongwith blood vessels is removed from the body of a human female through vaginal bleeding?
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Mention two functions of human ovaries.
Which structures in human female are equivalent to the following structures in the male?
- testes
- vas deferens
- penis
In each case say in what respect the structures are equivalent?
When a female child is born, her ovaries already contain thousands of immature eggs (or ova) contained in immature structures A. On maturing, A bursts open and an egg shoots out of the ovary in a process called B. The process B starts in the females at puberty and occurs again and again after a time period x. Before every occurrence of process B, the inner lining of uterus becomes thick and soft with lots of blood vessels in it. When the egg cell gets fertilised by a sperm, then an event C occurs in the life of mature human female which lasts for time period y leading to the birth of baby. If, however, the egg cell released by the ovary does not get a sperm to fuse with, then the thick and soft inner lining of uterus breaks down and comes out of the female's body in an event called D. The occurrence of event D is controlled by chemical substances E.
(a) What are A?
(b) What is process B?
(c) What is the time period x?
(d) Name the event C.
(e) How much is the time period y?
(f) What is the name of process D?
(g) Name the chemical substances E.
Explain how the transmission of virus and bacteria diseases be prevented?
Freshly released human egg has ______.
Testosterone is produced by:
