Selina solutions for कन्साइस बायोलॉजी [अंग्रेजी] कक्षा १० आईसीएसई chapter 13 - The Reproductive System [Latest edition]

Choose the correct meaning of reproduction.

State very briefly the chief function of the following:

Seminal vesicles

State very briefly the chief function of the following:

Prostate gland

State very briefly the chief function of the following:

Cowper's gland

State very briefly the chief function of the following:

Sperm duct (vas deferens)

One egg is released from each of the two ovaries every month.

The enlarged mature follicle bursts to release the egg.

The egg is passed down through the oviduct by muscular contractions.

Clitoris is equivalent to the male penis.

The vagina is a muscular tube.

Name the three main regions of the human sperm, and briefly mention the function of each.

Name the following:

Three accessory glands of human male reproductive system.

Name the following:

Two hormones secreted from placenta.

Name the two types of twins.

Name the following:

Two layers of the wall of uterus.

List the substances which the foetus receives from the mother through placenta.

How are carbon dioxide and urea, excreted by the foetus, removed?

Write one sentence using the following term pertaining to reproduction in humans.

Gestation

Write one sentence using the following term pertaining to reproduction in humans.

280 days

Write one sentence using the following term pertaining to reproduction in humans.

Head first

Write one sentence using the following term pertaining to reproduction in humans.

Placenta

Write one sentence using the following term pertaining to reproduction in humans.

After-birth

Write one sentence using the following term pertaining to reproduction in humans.

Tied and cut

Does the foetus inside the mother's uterus breathe?

Placenta produces certain hormones.

Amniotic fluid serves to provide oxygen to the foetus.

Heart and blood vessels have been formed by the end of five weeks of pregnancy.

Mother's blood flows into the foetus through placenta.

Complete the following by filling in the blanks 1 to 5 with appropriate words:

The human female gonads are ovaries. A maturing egg in the ovary is present in a sac of cells called ______ (1). As the egg grows larger, the follicle enlarges and gets filled with a fluid and is now called the ______ (2) follicle. The process of releasing the egg from the ovary is called ______ (3). The ovum is picked up by the oviducal funnel and fertilization takes place in the ______ (4). In about a weak the blastocyst gets fixed in the endometrium of the uterus and this process is called ______ (5).

The male accessory gland whose secretion neutralizes the acidity of the urethra and vagina is ______.

The onset of menstruation in women is called ______.

In the human menstrual cycle, the ovulation occurs around ______.

Fertilization takes place in ______.

The packing tissues between the coils of the seminiferous tubules are called as ______.

Which of the following cannot pass readily through the placenta to the foetus?

The thin-walled sac of skin in which testis descends is ______.

The outermost layer of uterine wall around the foetus is ______.

The period of pregnancy is called ______.

The canal through which each testis descends into the scrotum just before the birth of a male baby is ______.

Assertion (A): The placenta is a vital organ during pregnancy, responsible for providing nutrients and oxygen to the developing foetus.

Reason (R): The placenta develops from the fusion of the zygote and the endometrial lining, forming a specilized tissue structure that facilitates the exchange of substances between the maternal and foetal bloodstreams.

1. A is True and R is False.
2. A is False and R is True.
3. Both A and R are True.
4. Both A and R are False.

Assertion (A): Leydig cells produce oestrogen and progesterone.

Reason (R): Leydig cells are also called as interstitial cells which are located as packing tissues between the coils of seminiferous tubules.

1. A is True and R is False.
2. A is False and R is True.
3. Both A and R are True.
4. Both A and R are False.

Assertion (A): Prostate gland pours an alkaline secretion which neutralizes the acidic pH of the vagina.

Reason (R): Prostate gland is a lobulated gland located between the posterior surface of the urinary bladder and the rectum.

1. A is True and R is False.
2. A is False and R is True.
3. Both A and R are True.
4. Both A and R are False.

Assertion (A): Fertilization of the ovum and sperm occurs in the sperm duct of the female reproductive system. 

Reason (R): Vas deferens carries sperms from the epididymis to the urethra of the male reproductive system.

1. A is True and R is False.
2. A is False and R is True.
3. Both A and R are True.
4. Both A and R are False.

Name these:

3 male accessory glands in humans.

Name these:

2 hormones secreted from the corpus luteum.

Name these:

4 phases of the menstrual cycle.

Name the two types of twins.

Name these:

3 membranous, protective layers around the foetus.

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

Implantation, ovulation, child birth, gestation, fertilisation.

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

Sperm duct, coitus, sperm, vagina, urethra.

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

Sperm duct, penis, testes, sperms, semen.

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

Puberty, menopause, menstruals, menarche, reproductive age. 

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

Graafian follicle, ostium, uterus, fallopian tube, ovum.

Give appropriate term for the following: 

The onset of reproductive phase in a female. 

Give appropriate terms for the following: 

Rupture of follicle and release of ovum from the ovary.

Give the appropriate term for the following: 

Monthly discharge of blood and disintegrated tissues in the human female 

Give the appropriate term for the following: 

Process of fusion of ovum and sperm. 

Give appropriate terms for each of the following process: 

Fixing of developing zygote (blastocyst) on the uterine wall.

Match the items in column I with those in column II and write down the matching pairs (some may not match).

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.

Sperm : Spermatogenesis :: Ovum : ______.

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 : ______.

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.

Follicle cells : Ova :: ______ : Sperms.

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.

Leydig cells : Testosterone : ______ : Oestrogen.

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.

Follicular phase: 5-12 days:: Luteal phase : ______ days.

Choose the odd one out from the group of terms given below and write the category for the remaining terms:

Choose the odd one out from the group of terms given below and write the category for the remaining terms:

Choose the odd one out from the group of terms given below and write the category for the remaining terms:

Choose the odd one out from the group of terms given below and write the category for the remaining terms:

Choose the odd one out from the group of terms given below and write the category for the remaining terms:

State whether the following statements are TRUE (T) or FALSE (F):

Rewrite the wrong statement by correcting only one word either at the beginning or at the end of the sentence.

Fertilisation occurs in vagina.

State whether the following statements are TRUE (T) or FALSE (F):

Rewrite the wrong statement by correcting only one word either at the beginning or at the end of the sentence.

Uterus is also known as birth canal.

State whether the following statements are TRUE (T) or FALSE (F):

Rewrite the wrong statement by correcting only one word either at the beginning or at the end of the sentence.

Nutrition and oxygen diffuse from the mother’s blood into the foetus’s blood through amnion. 

Complete the following table by writing the name of the structure or the function of the given structure:

Given below is the name of certain stage/substance related to reproduction and found in human body. Answer the questions related to it.

Foetus.

1. Where is it contained?
2. How does it differ from embryo?

Given below is the name of certain stage/substance related to reproduction and found in human body. Answer the questions related to it.

Hyaluronidase.

1. Is it an enzyme or simply a protein?
2. What is its function?

Given below is the name of certain stage/substance related to reproduction and found in human body. Answer the questions related to it.

Morula.

1. What is this stage?
2. Name the stage which comes next to it?

Given below is the name of certain stage/substance related to reproduction and found in human body. Answer the questions related to it.

Amniotic fluid.

1. Where is it found?
2. What are its functions?

Given below is the name of certain stage/substance related to reproduction and found in human body. Answer the questions related to it.

Placenta

1. What are the two sources that form placenta?
2. Name any two main substances which pass from foetus to mother through placenta.
3. Name any two hormones it produces.

Given below is the name of certain stage/substance related to reproduction and found in human body. Answer the questions related to it.

Implantation.

1. The development stage that undergoes this process.
2. The approximate time after fertilisation, when it occurs.

Write important function of the following:

Inguinal canal

Write important function of the following:

Testis

Mention the functions of Ovary.

Mention the functions of Oviduct.

Give the function of the following:
Uterus

The exact location of the seminal vesicle

Write the specific location of the following:

Uterus

Write the specific location of the following:

Placenta

Write the specific location of the following:

Acrosome

Write the specific location of the following:

Vagina

Define the following term:

Reproduction

Define the following term: 

Hernia

Define ovulation.

Define the following term:

Puberty

Define.

Fertilization

Define the following term:

Hymen

Distinguish between the following pair:

Spermatogenesis and oogenesis

Distinguish between the following pair:

Implantation and gestation

Distinguish between the following pair:

Pregnancy and parturition

Distinguish between the following pair:

Placenta and umbilical cord

Differentiate between Identical twins and fraternal twins. 

Differentiate between the following pair: 

Menarche and menopause 

What is the significance of the testes being located in scrotal sacs outside the abdomen?

Can there be any abnormal situation regarding testes location? If so, what is that and what is the harm caused due to it?

What are the secondary sexual characters in the human male? 

What are the secondary sexual characteristics in the human female respectively?

What are the accessory reproductive organs?

Differentiate between primary and accessory reproductive organs.

Name and describe very briefly, the stages in the development of human embryo.

Is it correct to say that the testes produce testosterone. Discuss?

Given below is a diagram of two systems together in the human body.

1. Name the systems.
2. Name the parts numbered 1-10.
3. Describe the functions of the parts 3, 4, 5 & 6.
4. What will happen if the part 3 on both sides gets blocked?

The figure given ahead is an organ system of humans. Study the same and answer the following questions.

1. Identify the organ system.
2. Label the guidelines 1 to 7.
3. Write one important role of parts 3 and 6.
4. Name the cells of part 1 that produce testosterone.
5. What is the significance of the part 1 being located in a separate sac suspended outside the body?

The figure given below is an important gonad of humans. Study the figure and answer the following questions.

1. Identify the organ. Write its specific location in the body.
2. Label the parts shown in the figure as 1 to 4.
3. Write important functions of parts 2 and 4.
4. Name one cellular structure and one hormone which are produced in part 3.
5. Draw a neat and labelled diagram of the cellular structure mentioned by you in (d).

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

The diagram given below is that of a developing human foetus in the womb. Study the same and then answer the questions that follow:

1. Name the parts ‘l’ to ‘5’ indicated by guidelines.
2. What term is given to the period of development of the foetus in the womb?
3. How many days does the foetus take to be fully developed?
4. Mention two functions of the parts labelled ‘2’ other than its endocrine function.
5. Name any one hormone produced by the part labelled ‘2’.

The figure given below is the human female reproductive system. Study the same and answer the following questions.

1. Label the guidelines 1 to 6 shown in the figure.
2. What is the normal gestation period in human?
3. Where are the sperms released during coitus?
4. Write two important functions of part 2.
5. Mention the technical term for the fixing of developing zygote to the uterine wall.

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

1. Identify the reproductive cells A and B.
2. Name the specific part of the reproductive system where the above cells are produced.
3. Where in the female reproductive system do these cells unite?
4. Name the main hormones secreted by the (1) ovary (2) testes.
5. Name an accessory gland found in the male reproductive system and state the function of its secretion.