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प्रश्न
Name the organs of the human male reproductive system and state the functions of any two organs.
उत्तर
(i) The main organs of the human male reproductive system are testes and penis.
(ii) Epididymis, vas deferens, seminal vesicles, and prostate gland are also the organs of the human male reproductive system.
Functions:
(i) Testes produce sperms and the hormone testosterone.
(ii) Penis delivers the sperms to the site of fertilization.
APPEARS IN
संबंधित प्रश्न
Explain the process of fertilization in human beings.
List any four methods of contraception used by humans. State in brief two advantages of adopting such preventive methods.
What is the main difference between sperms and eggs of humans? Write the importance of this difference.
State the exact location of the Proximal convoluted tubule.
The diagram given below is that of a developing human foetus. Study the diagram and then answer the questions that follow:
(i) Label the parts numbered 1 to 3 in the diagram.
(ii) Mention any two functions of the part labelled 2 in the diagram.
(iii) Explain the significance of the part numbered 3 in the diagram.
(iv) Define the term ‘Gestation’. What is the normal gestational period of the developing human embryo?
(v) Mention the sex chromosomes in a male and female embryo.
A single highly coiled tube where sperms are stored gets concentrated, and mature is known as ______
fill in the blanks with suitable functions: Seminiferous Tubule and _____
State the main function of the Sperm duct.
Where does a fertilised ovum develop into a baby in the human body?
Why does menstruation occur? Describe the menstrual cycle in human females (or women).
fertilisation in humans can occur only once in a month. Why?
What is the life support system of a fetus?
How long does a human baby take to develop before birth?
What is the role of seminal vesicles and prostrate gland in human male reproductive system?
Which among the following are not the functions of testes at puberty?
(i) formation of germ cells
(ii) secretion of testosterone
(iii) development of the placenta
(iv) secretion of estrogen
In human females, an event that indicates the onset of reproductive phase is :
(a) growth of body
(b) change in hair pattern
(c) change in voice
(d) menstruation
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.
The germ cell A produced by a person X is round in shape and it fuses with another germ cell B having a long tail and produced by a person Y. The fusion of A and B produces a new cell C. The cell C divides repeatedly and grows inside the organ D of person X to form E in which the body features of the unborn baby are not much developed. E grows further to form F in which the various body features of the unborn baby (like hands, legs, head, eyes, and ears, etc.) can be identified. F grows further and ultimately forms a baby. What are A, B, C, D, E and F? Out of the two persons X and Y, which one is male and which one female?
The diagram below represents two reproductive cells A and B. Study the same and then answer the questions that follow:
 |
- 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.
Trace the path of sperms from where they are produced in human body to the exterior.
Describe in brief the role of seminal vesicle in human male reproductive system.
Describe in brief the role of vas deferens in human male reproductive system.
Draw a diagram of human female reproductive system and label the part.
(i) That produces eggs.
(ii) Where fusion of egg and sperm take place.
(iii) Where zygote is implanted.
What happens to human egg when it is not fertilized?
Describe the role of the following in human beings:
(i) Seminal vesicles
(ii) Prostate gland
Name the following:
Organ where implantation takes place.
Define the following:
Asexual reproduction
Answer the following question:
Why are family planning measures needed in our country?
Give Reasons
At the time of birth, the testes descend into the scrotal sacs.
Explain the term Parturition or birth.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
A zygote is the product of the fusion of male and female gametes.
State the Location:
Prostate gland
Choose the Odd One Out:
What is inhibin? State its functions.
______ is a lytic enzyme released by the sperm.
How does human sperm locomote?
Distinguish between Vasa efferentia and Vasa deferentia.
