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The Reproductive System

Question
ICSEENIBI10003444
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Study the diagram given below and then answer the questions which follow:

(i) Name the parts labelled 1 and 2. State the function of each part.

(ii) State any one function of amniotic fluid.

(iii)What is the role of the umbilical cord in the development of the foetus?

(iv)Name the part in the diagram which is endocrine in nature. 

Solution

(i)
1 - Placenta
Placenta – It helps in supplying oxygen and nutrients to the embryo and, at the
same time, it also carries excretory substances from the foetus to the mother’s
blood.
2. Chorion –
Function It forms the placenta.
(ii) Amniotic fluid acts as a shock absorber and protects the embryo against mechanical jerks or blows.
(iii)The umbilical cord contains blood vessels which connect the placenta with the
foetus. It transports the nutrients and O2 from the mother’s blood to the foetus and removes CO2 and excretory wastes from the foetus’ blood into the mother’s blood. Thus, it acts as a transport channel between the foetus and the mother’s blood.
(iv)Placenta.

Some More Questions From The Reproductive System Chapter

State the main function of the following:

Sperm duct.

Copy and 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 eggs grow lrger, 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 fertilisation takes place in the …. (4) In about a week the blastocyst gets fixed in the endometrium of the uterus and this process is called ……….(5)

Given below is an example of certain structures and their special functional activities.

For example: Eye and vision.

On a similar pattern, complete the following:

Placenta ...................... 

Give the biological/technical terms for the following:

The onset of menstruation in a young girl.

Give the biological/technical terms for the following:

Structure which connects the placenta with the foetus

Given below are five groups of terms. In each group, arrange and rewrite the terms in the correct order so as to be in a logical sequence. 

For example, Question: Implantation, Parturition, Ovulation, Gestation, Fertilisation. Answer: Ovulation,Fertilisation. Implantation. Gestation, parturition.

 Intestine, Llver, lntestlnal artery, Hepatic vein. Hepatic portal vein 

(a) Given below is a diagram of the lateral section of the testis of a man. Study the same and answer the questions which follow:

(i)Label the parts numbered 1 to 4 in the diagram.

(ii) State the functions of the parts labelled 1 and 3.

(iii) What is the significance of the testes being located in the scrotal sac outside the abdomen?

(iv) What is the role played by the inguinal canal?

(v) What is semen?

Name the following:

v. The structure formed by the villi of the embryo and the uterus of the mother

Choose the correct answer from the four options given below:

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

Given below is an example of a certain structure and its special functional activity. On a similar pattern fill in the blanks with suitable functions:
Example: Chloroplast and Photosynthesis

iii. Seminiferous Tubule and _________.

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