Foetal Development

Q. The process of release of egg from the ovary is called ___.

1. menstruation
2. ovulation
3. oogenesis
4. spermatogenesis

Q.

Which of the following occurs first during the development of an embryo?

1. Differentiation of tissues.

2. Differentiation of organ.

3. Differentiation of cells

4. Differentiation of organ system.

Q.

What is the process of development of an embryo from the zygote called?

Q.

Mention two functions of amniotic fluid.

Q.

State the main function of the following:

Amniotic fluid

Q.

What is the blastocyst stage?

Q.

Give functions of Amniotic fluid.

Q.

Outermost protective layer around the foetus

1. Cervix

2. Amniotic fluid

3. Amnion

4. Chorion

Q. Match the events with the month of gestation at the end of which they are evident.

1. Hair appears on head
2. Eyelids separate
3. Heart develops
4. Limbs and digits

Q.

Which among the following is not a function of the amniotic fluid?

1. i)➡ c, ii)➡ e, iii)➡ b, iv) ➡ a, v)➡d

2. i)➡ d, ii)➡ b, iii)➡ a, iv) ➡ c, v)➡e

3. i)➡ b, ii)➡ c, iii)➡ e, iv) ➡ a, v)➡d

4. i)➡ d , ii)➡ c, iii)➡ a, iv) ➡ b, v)➡e

Q.

What is the significance of amniotic fluid?

Q.

The fluid present within a sac like structure surrounding the foetus, which acts as a shock absorber.

Enter 2 words only.

Q.

Briefly answer the following question :

What is the significance of amniotic fluid ?

Q.

Name the term/process for the following statement:

A fetal membrane which secretes amniotic fluid.

Q. Sort the stages in the order they appear during the embryonic development in humans.

1. Foetus
2. Embryo
3. Morula
4. Blastocyst
5. Zygote

Q.

Amniotic fluid act as shock absorber.

1. True
2. False

Q. Pregnancy begins with implantation of

1. Fertilized ovum
2. Blastopore
3. Embryo
4. Blastocyst

Q. What is the correct sequence of events during reproduction in human beings?

1. Gamete formation $\to$ fertilisation $\to$ zygote $\to$ embryo
2. Embryo $\to$ zygote $\to$ fertilisation $\to$ gamete formation
3. Fertilisation $\to$ gamete formation $\to$ embryo $\to$ zygote
4. Gamete formation $\to$ fertilisation $\to$ embryo $\to$ zygote

Q. is a specialised organ for exchange of nutrients between the maternal and the foetal blood.

1. Morula
2. Placenta
3. Zona pellucida
4. Vulva

Q. Division of the single celled zygote by mitosis is called .

1. binary fission
2. multiple fission
3. cleavage
4. fragmentation

Q. Which of these organs supply nutrients to the developing embryo?

1. Fallopian tube
2. Placenta
3. Seminal vesicles
4. Follicles

Q. Pregnancy begins with implantation of

1. Embryo
2. Fertilized ovum
3. Blastopore
4. Blastocyst

Q. Name the membrane that surrounds the foetus and secretes a protective fluid.

Q. Where is foramen ovale situated?