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प्रश्न
Fill in the blank.
In humans, sperm production occurs in the organ ----------------.
उत्तर
In humans, sperm production occurs in the organ testes.
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संबंधित प्रश्न
Write the functions of the following organs of reproduction:
a. Ovaries
b. Seminal vesicle and prostate glands
Suggest three contraceptive methods to control the size of human population, which is essential for the health and prosperity of a country. State the basic principle involved in each.
What is the main difference between sperms and eggs of humans? Write the importance of this difference.
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.
Which of the following is not a part of the female reproductive system in human beings?
What are the different methods of contraception?
State the changes that take place in the uterus when Implantation of embryo has occurred
Mention the total number of chromosomes along with the sex chromosomes that are present in a human female and a human male. Explain how in sexually producing organisms the number of chromosomes in the progeny remains the same as that of the parents.
When a cell reproduces, what happens to its DNA?
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?
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.
What are the organs in humans which produce the gametes?
What do the testes in a man produce?
For how much time does menstruation last in human females (or women)?
Mention two functions of human ovaries.
What is the life support system of a fetus?
Name the organs which produce ova (or egg cells) in human females.
Explain why, fertilisation is possible if mating takes place during the middle of menstrual cycle.
What joins embryo to placenta in mother's body?
Which of the following is not a sexually transmitted disease?
(a) gonorrhoea
(b) hepatitis
(c) syphilis
(d) AIDS
In a flower, the parts that produce male and female gametes are respectively :
(a) sepal and anther
(b) filament and stigma
(c) anther and ovary
(d) stamen and style
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
Draw a sectional view of human female reproductive system and label the following parts :
(i) Where the development of egg occurs.
(ii) Where fertilization takes place.
Describe in brief the role of vas deferens in human male reproductive system.
Describe in brief the role of ureter in human male reproductive system.
Describe in brief the role of prostate gland 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?
Give the names.
Any two sexual diseases.
Choose the correct answer:
First menstrual cycle is known as ___________
Name the following:
Two accessory glands in the male reproductive system.
Answer the following question:
Why are family planning measures needed in our country?
What is sexual reproduction? What are its essential features?
Rewrite the following terms in a correct and logical sequence:
The luteal phase, follicular phase, menstrual phase, ovulatory phase.
State the Location:
Prostate gland
Choose the Odd One Out:
Choose the Odd One Out:
What is the composition of semen?
Which one of the following statements about human sperm is correct?
