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Answer the Following Question: Why Are Family Planning Measures Needed in Our Country? - Science and Technology 2

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प्रश्न

Answer the following question:
Why are family planning measures needed in our country?

टिप्पणी लिखिए

उत्तर

There is a need for family planning measures in our country because
  1. Increasing the population leads to a loss of quality of life.
  2. As a population increases, there is a decrease in per capita income.
  3. Rapid consumption of natural resources takes place due to the increasing population.
  4. An increased population leads to insufficient medical facilities.
  5. The increasing population leads to insufficient educational facilities.
  6. For a better future of mankind and a good standard of life, the rate of growth of the population has to be reduced.
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2016-2017 (July)

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संबंधित प्रश्न

Explain the process of fertilization in human beings.


Draw a sectional view of human female reproductive system and label the part where

(i) eggs develop.

(ii) fertilisation takes place.

(iii) fertilised egg gets implanted.


List two functions ovary of human female reproductive system.


Describe the function of placenta.


Write the site of fertilization and the part where the zygote gets implanted in the human female.


Which of the following is not a part of the female reproductive system in human beings?


When a cell reproduces, what happens to its DNA?


State the main function of the Leydig cells


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.


The site of maturation of human sperms is the


What do the testes in a man produce?


Where in the human body does an ovum get fertilised?


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?


The diagram shows female reproductive system. Name the parts labelled A to D.
(a) In which part do the sperms enter?
(b) Which part releases the egg?
(c) In which part does fertilisation take place?
(d) In which part does the foetus develop?


Why is it an advantage for the testes to be situated in the scrotal sac outside the main body cavity? Can you think of one disadvantage?


Which structure in human female is equivalent to the  vas deferens in the male?and in what respect the structures are equivalent?


Which structure in human female is equivalent to the  penis in the male?and in what respect the structures are equivalent?


Describe the process of fertilisation in humans and development of embryo briefly.


Explain why, fertilisation is possible if mating takes place during the middle of menstrual cycle.


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


During adolescence, several changes occur in the human body. Mark one change from the following associated with sexual maturation in boys.


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


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?


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 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 why, a human zygote is more likely to grow into an adult than a frog zygote.


Rewrite the terms in the correct order so as to be in a logical sequence.

Implantation, ovulation, child birth, gestation, fertilisation.


Where does fertilisation occur in a human female? 

List two changes observed in girls at the time of puberty.


Gender of child is determined  by the male partner of couple. Explain with reasons whether this statement is true or false.


Complete the following statement by choosing the correct alternative:

Sterilization in female is due to cutting off of ______.


Rewrite the following terms in a correct and logical sequence:
The luteal phase, follicular phase, menstrual phase, ovulatory phase.


Differentiate on the basis of what is indicated in brackets :
The prostate gland and Cowper’s gland (the nature of secretion)


The below diagram is of a developing embryo is a mother’s womb:

(i) Write the functions of the placenta, amnion, and umbilical cord.
(ii) How are the waste products of a fetus removed?
(iii) What is the gestation period?


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.


State the Location:

Prostate gland


The following is the illustration of the sequence of ovarian events (a-i) in a human female.

Write the difference between C and H.


Correct sequence in development is ______.


Human eggs are______.


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