Advertisements
Advertisements
प्रश्न
Sketch and label human female reproductive system.
Is the woman responsible for sex-determination of child? Justify your answer.
उत्तर
Woman is not responsible for sex-determination. Man produces two types of sperms as 22+X or 22+Y, whereas woman produces only 22+X types of ova. Female embryo is produced by union of 22+X sperm and 22+X ovum. Male embryo is produced by union of 22+Y sperm and 22+X ovum. Thus, sex of the embryo depends upon sperms of man.
APPEARS IN
संबंधित प्रश्न
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.
What are the different methods of contraception?
Write the function of the following part in a human female reproductive system:
Fallopian tube
Why are testes located outside the abdominal cavity? What is responsible for bringing about changes in appearance seen in boys at the time of puberty?
Give scientific reasons: Mature erythrocytes in humans lack nucleus and mitochondria
Given below are diagrams showing the different stages in the process of fertilisation of an egg. in the human female reproductive tract.
Study the diagrams and answer the questions:
1) Arrange the letters given below each diagram in a logical sequence to show the correct order in the process of fertilisation.
2) Where does fertilisation normally take place? and What is ‘Implantation’ that follows fertilisation?
3) Mention the chromosome number of the egg and zygote in humans.
4) Explain the term ‘Gestation’. How long does Gestation last in humans?
5) Draw a neat, labelled diagram of a mature human sperm.
Which part of the human body produces sperms?
What name is given to the fusion of sperm and ovum?
What is gestation period? How much is the gestation period in humans?
fertilisation in humans can occur only once in a month. Why?
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?
Which structure in human female is equivalent to the vas deferens in the male?and in what respect the structures are equivalent?
What is the life support system of a fetus?
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?
Name the organs which produce ova (or egg cells) in human females.
Where does fertilisation take place in human females?
What is placenta? What is its function?
Fertilisation results immediately in the formation of :
(a) a zygote
(b) an embryo
(c) a placenta
(d) a foetus
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
Describe in brief the role of seminal vesicle in human male reproductive system.
Describe in brief the role of prostate gland in human male reproductive system.
Fill in the blank.
In humans, ------ chromosome is responsible for maleness.
Choose the correct answer:
First menstrual cycle is known as ___________
Give the function of the following:
Uterus
Give the functions of the following:
Vagina
Define the following:
Parthenogenesis
Define the following:
Gestation
Define the four stages in the uterine cycle.
Give Reasons
At the time of birth, the testes descend into the scrotal sacs.
Name the Following
What does this abbreviation stand for LH?
Give Technical Term:
What are the age restrictions for marriages by law for boys and girls in India?
Choose the Odd One Out:
Choose the Odd One Out:
The mature sperms are stored in the ____________.
The male homologue of the female clitoris is ____________.
Given below is a group of terms. In the group, one pair indicates the relationship between the two terms. Rewrite and complete the second pair on a similar basis.
Female gonad : Ovaries :: Male gonad : ______.
