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प्रश्न
Explain the process of birth in human beings.
उत्तर
Birth:
- When the baby is grown completely, it begins to move down towards the vaginal passage.
- The opening of the cervix gradually opens, and the baby is released out through the vagina.
APPEARS IN
संबंधित प्रश्न
Explain the process of fertilization in human beings.
Describe, in brief, the changes the uterus undergoes
(i) to receive the zygote.
(ii) if zygote is not formed
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.
Name the respective part of human female reproductive system:-
(i) that produces eggs,
(ii) where fusion of eggs and sperm takes place, and
(iii) where zygote gets implanted.
The structure formed by the villi of the embryo and the uterus of the mother.
fill in the blanks with suitable functions: Seminiferous Tubule and _____
State the main function of the Sperm duct.
The site of maturation of human sperms is the
Give biological explanations for All the food chains begin with green plants.
Where is the male gamete formed in humans?
What are the organs in humans which produce the gametes?
What do the ovaries in a woman produce?
Write the names of male sex hormone?
What name is given to the fusion of sperm and ovum?
Mention two functions of human ovaries.
What is gestation period? How much is the gestation period in humans?
fertilisation in humans can occur only once in a month. Why?
How long does a human baby take to develop before birth?
Draw a labelled diagram of the human male reproductive system. With the help of this diagram, describe the working of human male reproductive system?
Where does fertilisation take place in human females?
What is placenta? What is its function?
The ratio of the number of chromosomes in a human zygote and a human sperm is ______
When a human female reaches a certain age then vaginal bleeding occurs for a few days after regular time intervals.
(a) What is this process known as (i) in scientific terms, and (ii) in everyday language?
(b) At what approximate age this process starts in human females? When is the human female said to have attained at this stage?
(c) After how much time is this process repeated? For how many days does this process usually last?
(d) What does the onset of this process in human females signify?
(e) At which particular event in the life of a human female does this process stop temporarily but start again?
(f) At which approximate age of human female does this process stop permanently?
X and Y are two human beings. The organ A in the reproductive system of X releases a mature gamete B once a month which goes into a tube-like structure C through a funnel-like opening. The organ D in the reproductive system of Y makes and releases gametes E which pass through a duct F and are introduced by an organ of Y, into the body of X. B and E fuse together in C to form a new cell G. The cell G divides repeatedly to form a ball of cells H which gets embedded in the lining of organ I of reproductive system of X where it grows and develops into a baby.
(a) Name (i) organ A, and (ii) gamete B.
(b) Write two names of tube-like structure C.
(c) Name (i) organ D, and (ii) gamete E.
(d) Write two names of duct F.
(e) Name (i) cell G (ii) ball of cells H, and (iii) organ I.
(f) Out of X and Y, which one is (i) male, and (ii) female?
Define the term puberty.
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?
“Gender of child is determined by the male partner of couple”. Draw a diagram explaining the above statement.
What is reproduction? List its two types.
State whether the following statement is true or false:
Oviducts and fallopian tubes are one and the same thing.
Draw a diagram to display the vertical view of human female reproductive system and label the following parts in the diagram:
(1) Ureter
(2) Ovary
(3) Funnel of fallopian tube
(4) Urethra.
Define the following:
Parthenogenesis
Define the following:
Gestation
Give two important unique features of the human reproductive system.
Name the Following
What does this abbreviation stand for IUD?
Give Technical Term:
What are the age restrictions for marriages by law for boys and girls in India?
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.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Women after the age of 45 years normally cannot produce children.
Column ‘II’ is a list of items related to ideas in Column ‘I’. Match the term in Column ‘II’ with a suitable idea given in Column ‘I’.
| Column I | Column II |
| (i) Acrosome
(ii) Ovulation (iii) Sperm (iv) Menopause (v) Implantation (vi) Fertilization (vii) Contraception in males |
(a) Male gamete
(b) Oviduct (c) Uterus (d) Spermatozoa (e) Progesterone (f) Stoppage of the menstrual cycle (g) Sudden change in genes |
Multiple Choice Question:
What will happen if the temperature of the scrotal sacs temporarily goes to about 2°C lower than body temperature?
