Explain the Process of Development in Human Beings. - Science and Technology 2


Explain the process of development in human beings.




  • Fertilisation results in the formation of zygote.
  • The zygote divides and redivides to form a ball of cells called blastocyst.
  • The blastocyst gets implanted on the wall of the uterus and forms the embryo.
  • The embryo obtains all the nourishment and oxygen from the mother’s blood.
  • A structure called placenta present in the uterus supplies all the necessary nutrients to the embryo through the umbilical cord.
  • The development of the foetus takes place for nine months
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2014-2015 (March)


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Find the odd one out and write it: vagina, uterus, vas deferens, ovary

Explain the process of fertilization in human beings.

Explain the process of birth in human beings.

Write the functions of the following organs of reproduction:
a. Ovaries
b. Seminal vesicle and prostate glands

Name any three parts of the female reproductive system in human beings. Write one function of each.

Describe placenta structure.

What are sexually transmitted diseases?

 What are the different methods of contraception?

The pituitary hormone which stimulates contraction of uterus during  child birth.

Give scientific reasons: Mature erythrocytes in humans lack nucleus and mitochondria 

A single highly coiled tube where sperms are stored gets concentrated, and mature is known as ______

Give biological explanations for All the food chains begin with green plants.

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?

Draw a labelled diagram of the human male reproductive system. With the help of this diagram, describe the working of human male reproductive system?

Which of the following is not a sexually transmitted disease?
(a) gonorrhoea
(b) hepatitis
(c) syphilis
(d) AIDS

The ratio of the number of chromosomes in a human zygote and a human sperm is ______

Define the term puberty.

Fill in the blank. 

In humans, sperm production occurs in the organ ----------------. 

Fill in the blank. 

 In humans, ------ chromosome is responsible for maleness. 

Fill in the blank. 

 In male and female reproductive system of human, ------------- gland is same. 

Fill in the blank.

Pollen grains are formed by ______ division in locules of anthers. 

Give the names.

Any two sexual diseases. 

Give the name:

Methods of family planning.

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

Sketch and label human female reproductive system.
Is the woman responsible for sex-determination of child? Justify your answer.

“Gender of child is determined by the male partner of couple”. Draw a diagram explaining the above statement.

State whether the following statement is true or false:
Oviducts and fallopian tubes are one and the same thing.

Define the following:    

The diagram below represents two reproductive cells A and B. Study the same and then answer the questions that follow:

Where in the female reproductive system do these cells unite?

Name the organs of the human male reproductive system and state the functions of any two organs.

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

Name the Following

What does this abbreviation stand for FSH?

Give Technical Term:

What are the age restrictions for marriages by law for boys and girls in India?

State the Location:


Choose the Odd One Out:

Multiple Choice Question:

What will happen if the temperature of the scrotal sacs temporarily goes to about 2°C lower than body temperature?

The mature sperms are stored in the ____________.

The male homologue of the female clitoris is ____________.

What is inhibin? State its functions.

Mention the importance of the position of the testes in humans.

What is the composition of semen?

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

Write the difference between C and H.

Reproductive organs are also considered endocrine glands.

If for some reason, the vasa efferentia in the human reproductive system get blocked, the gametes will NOT be transported form ______

Testosterone is produced by:

Distinguish between Vasa efferentia and Vasa deferentia.


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