With the Help of a Neat, Labelled Diagram of Human Male Reproductive System. - Biology


With the help of a neat, labelled diagram describe the human male reproductive system.



Human male reproductive system:-

The human male reproductive system comprises of the following.

  1. testes
  2. epididymis
  3. vas deferens
  4. Seminal vesicles
  5. prostate gland
  6. Cowper's glands
  7. penis

1. Testes

Testes produce male gametes and sperm.

To maintain the temperature 2-3°C lower than the body temperature, the scrotum is located outside the body cavity.

2. epididymis

The epididymis stores sperms temporarily.

3. vas deferens

Each epididymis continues further as a sperm duct or vas deferens.

4. Seminal vesicles

The seminal vesicles produce a secretion which is responsible for the transport of sperm.

5. Prostate gland

It is a bilobed structure which surrounds the urethra.

It pours an alkaline secretion into the semen.

6. Cowper’s glands

These are two small ovoid glands.

They open into the urethra.

Its secretion serves as a lubricant.

7. Penis

The urethra passes through the penis.

It carries either urine or semen at a given time.

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Chapter 3: Human Reproduction - Exercises [Page 55]


NCERT Biology Class 12
Chapter 3 Human Reproduction
Exercises | Q 2 | Page 55

Video TutorialsVIEW ALL [1]


____________ contribute about 60% of the total volume of the semen.

The external layer of connective tissue sheath of human testis is __________.

Pituitary dwarfism is treated with gene therapy by____

(A) Human insulin
(B) Tissue growth factor - Beta
(C) Tissue plasmogen activator
(D) Human growth hormone producer gene

What is the full form of IVF?

Write a note on human sperm

Draw a labelled diagram of L.S. of human testis.

Define Spermatogenesis

Define Reproductive health

Put a tick mark (✓) against the correct alternative in the following statement:

Identify the stage which is formed after the fertilisation of the egg by the sperm?

Distinguish between the following pair of terms:

Egg and sperm.

State the reason why testes lie outside the abdomen in a scrotum?

List the structures, in their correct sequence, through which the sperms must pass from the time they are produced in the testes to the time they leave the urethra.

State the function of Testes.

State the function of Seminal vesicle.

Given alongside is a diagram of male reproductive system in humans. Label the parts indicated by numbers 1 to 5, and state their functions.

Multiple choice question. Tick (✓) the correct choice:

Testis are present in a sac called

  1. scrotum
  2. oviduct
  3. epididymis
  4. none of the above

Mention the functions of Testis.

Describe the male reproductive systems in humans.

Name the following : 

The body part in which the testes are present in a human male.

Differentiate between the following pair: 

 Hymen and clitoris 

Given below is the outline of the male reproductive system. Name the parts labelled 1 to 8 and state their functions. Also name the corresponding structure of part (4) in the female reproductive system.

Differentiate between Vas deferens and vasa efferentia.

Differentiate between Spermatogenesis and spermiogenesis.

Give the name: 

Hormones related with male reproductive system. 

Complete the following statement by choosing the correct alternative:

Male copulatory organ ______.

Explain the Term Penis.

Name the Following

Male copulatory organ.

Name the Following

The accessory gland in human males whose secretion activates the sperms.

Give Technical Term:

Name the male gamete of a mammal.

Write the functional activity of the following structure:

Cowper’s gland

In humans, there are ____________ pairs of chromosomes.

In humans, sperm production occurs in the organ __________.

Find an odd one out.

Find an odd one out.

How are the sperms formed?

How is the semen produced?

Write the functions of penis

Write the functions of Seminal vesicle

Write the answers to the questions by observing the figure.

  1. What does the above figure show?
  2. Write the names of parts A, B, C, D.
  3. Write the function of the part 'D'.
  4. How is semen formed?

The large elongated cells that provide nutrition to developing sperms are ______

Name the secondary sex organs in males. 

Why are the human testes located outside the abdominal cavity? Name the pouch in which they are present.

What is the enzyme present in the acrosome of sperm?

The increased level of estrogen and progesterone is responsible for menstruation.

In the given diagram represents the

Identify the number of spermatids produced from 1 secondary spermatocyte.

Which hormone controls the secondary sexual characters in males?

Cowper's gland is homologous in function to ______

How much semen is generally present in seminal fluid?

Identify the labels (a, b, c, and d) in the given diagram of the male reproductive system.


Which is the duct that carries sperms from testes and opens into the epididymis?

ln the reproductive system of a male human being, the ejaculatory ducts open into ________.

In the following diagram, what are A and its function?


The enlarged end of penis is covered by a loose fold of skin is called ______.

Vasa efferentia are the ductules leading from ______.

The vas deferens receives duct from the seminal vesicle and opens into urethra as ______.

Sertoli cells are regulated by the pituitary hormone known as ______.

Seminal plasma in humans is rich in ______.

Seminal plasma in human males is rich in ______.

Semen is a constituent of seminal plasma with ______.

Match between the following representing parts of the sperm and their functions and choose the correct option.

Column A Column B
A. Head i. Enzymes
B. Middle piece ii. Sperm motility
C. Acrosome iii. Energy
D. Tail iv. Genetic material

Seminal plasma, the fluid part of semen, is contributed by.

  1. Seminal vesicle
  2. Prostate
  3. Urethra
  4. Bulbourethral gland

ells of Leydig occur in ______.

Seminal plasma in human males is rich in ______.

The primary sex organ of a human male is ______.

In human males, the testes lie in the scrotum, because it helps in the ______ 

A pair of ducts arising from testis, which carries sperms are ______ 

In the following Question, the Assertion and Reason have been put forward. Read the statements carefully and choose the correct alternative from the following:

Assertion: In the male reproductive system, the transport of sperm takes place in a fluid that also provides nutrition.

Reason: Protective glands and seminal vesicles secret in the vas deferens.

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

In human males, the testes lie in the scrotum, because it helps in the

Give two reasons for the appearance of variations among the progeny formed by sexual reproduction.

Why do only male gametes have a tail?

Crypts of Lieberkuhn are absent in ______.

Mature sperms in humans are stored in ______.

The shared terminal duct of the reproductive and urinary system in the human male is ______.

The Leydig cells as found in the human, body are the secretory source of ______.

Cell at the end of first meiotic division male sperm differentiates into ______.

______ is the smallest cell in males.

______ carries sperms to the seminal vesicles.

The process of formation of sperms is known as ______.

Small sac-like muscular structures that enclose testes.

Give reasons for the following

Scrotum remains outside the body of human males.

Accessory glands of male reproductive system are

Vasa efferentia exist in between:

The path of sperm transport is given below. Provide the missing steps in blank boxes.

How do sperms develop?

What is the length of the sperm?

Identify A, B, C, D, in the given diagram of the human reproductive system:

Sketch and label Human Male Reproductive System.

Which of the following provides a proof for forensic test in case of rape?

Given below is a certain situation. Analyze and describe its possible impact on a person:

Testes of a male boy are not able to descend into the scrotum during his embryonic development.

Given below is a certain situation. Analyze and describe its possible impact on a person:

The Vas deferens of a man is plugged.

Give significance of Leydig's cells.

Draw a neat labeled diagram of T.S. of testis.

Mention the location and the function of Leydig cells.

In humans, sperm production occurs in the organ ______.

List two roles of Seminal vesicles and prostate gland in the human reproductive system.

List two roles of the Testis in the human reproductive system.

Answer the following question based on the human male reproductive system:

In which organ sperms are formed?

Answer the following question based on the human male reproductive system:

What is the length of a sperm?

Answer the following question based on the human male reproductive system:

Name any two unpaired organs of male reproductive system

Match the items given in Column I with the most appropriate ones in Column II and rewrite the correct matching pairs:

  Column I   Column II
(a) Leydig Cells 1. Lack of thyroxine in children
(b) Stoma 2. 12 pairs
(c) Ova 3. Testosterone
(d) Cranial nerve 4. Diffusion of respiratory gases
(e) Cretinism 5. Haploid cells
    6. 31 Pairs
    7. Diploid cells


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