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प्रश्न
What is the composition of semen?
उत्तर
Semen or seminal fluid is a milky white fluid which contains sperms and seminal plasma, which is secreted from the seminal vesicles, prostate gland, and bulbourethral glands.
संबंधित प्रश्न
Explain the process of birth in human beings.
If a woman is using a copper-T, will it help in protecting her from sexually transmitted diseases?
State the changes that take place in the uterus when Female gamete/egg is not fertilised
Give appropriate biological/technical terms for the following:
The kind of twins formed from two fertilized eggs.
Match the Column:
| no | Column A | Column B |
| 1 | Allele | Control of automobile exhaust |
| 2 | Leydig cells | Tourniquet |
| 3 | Utriculus | Alternate forms of genes |
| 4 | Snake bite | Dynamic equilibrium |
| 5 | Euro IV norms | Testosterone |
| Sudden change in genes | ||
| Static equilibrium |
Why does menstruation occur? Describe the menstrual cycle in human females (or women).
What is gestation period? How much is the gestation period in humans?
Describe the process of fertilisation in humans and development of embryo briefly.
Which one of the following best describes the function of the umbilical cord? It :
(a) feeds the embryo with digested substances.
(b) conveys nutrients and wastes to and from the embryo respectively
(c) removes waste matter from the embryo to the mother's blood.
(d) supplies oxygenated blood from the mother to the embryo.
The male gametes in a flower and in a human are produced respectively in :
(a) stigma and ovary
(b) anther and style
(c) ovary and testes
(d) anther and testes
The normal body cell of an organism contains 28 pairs of chromosomes. The number of chromosomes present in its germ cell will be
(a) 28
(b) 14
(c) 56
(d) 42
Write two examples of sexually transmitted diseases caused by bacteri.
Describe in brief the role of prostate gland in human male reproductive system.
Choose the correct answer:
Fertilization occurs in _____________
Answer the following question:
Why are family planning measures needed in our country?
Draw a labeled diagram of the human female reproductive system.
State the Location:
Uterus
Match Columns I and II and select the correct option.
| Columns I | Columns II | ||
| i. | Transfer of sperms in the female genital tract. | a. | Gestation |
| ii. | Delivery of baby | b. | Fertilization |
| iii. | Fusion of male and female gamete. | c. | Parturition |
| iv. | Formation of sperms and ovum | d. | Insemination |
| e. | Gametogenesis |
Given below are the events in human reproduction. Write them in correct sequential order.
Insemination, gametogenesis, fertilisation, parturition, gestation, implantation
