Reproductive Phase

Q.

What is menstruation? Explain. [3 MARKS]

Q.

Differentiate between physical changes in boys and girls during adolescence.

Q.

How does the development of embryo take place?

Q.

Implantation of the embryo occurs in ____.

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

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

Q.

Reproductive age in women starts when their__________.

1. menstruation starts.

2. breasts starts developing

3. body weight increases

4. height increases.

Q. Which female reproductive organ produces eggs?

1. Ovary
2. Fallopian tube
3. Uterus
4. Oviduct

Q.

Given below are events that lead to pregnancy and development of embryo:
(i) Fertilisation of egg
(ii) Maturation of egg
(iii) Release of egg
(iv) Embedding of embryo onto thickened uterine wall.

Which of the following options give the correct order of sequence in which they occur?

1. i, ii, iii, iv
2. ii, i, iii, iv
3. i, iv, ii, iii
4. ii, iii, i, iv

Q. Which of the following statement is correct about male reproductive system in humans?

1. It’s main function is to produce urine
2. It’s main function is to produce semen
3. Heart is the main organ in the male reproductive system
4. If reproductive system fails, the organism dies

Q. Label the parts of the female reproductive system as shown in the following image.

1. 1 - Cervix
   2 - Fallopian tubes
   3 - Uterus
   4 - Ovary
   5 - Vagina
2. 1 - Ovary
   2 - Fallopian tubes
   3 - Uterus
   4 - Vagina
   5 - Cervix
3. 1 - Ovary
   2 - Fallopian tube
   3 - Uterus
   4 - Cervix
   5 - Vagina
4. 1 - Ovary
   2 - Fallopian tubes
   3 - Cervix
   4 - Uterus
   5 - Vagina

Q.

What is gestation period? What is human gestation period? Define parturition. [3 MARKS]

Q. The following image represents the formation of zygote and the development of embryo.
On the basis of the image answer the following-
A is formed by the fusion of gametes. A undergoes repeated divisions and forms B. B then gets embedded in C which is an unpaired structure. Identify A, B and C.

1. A: Zygote
   B: Ovum
   C: Oviduct
2. A: Ovum
   B: Embryo
   C: Uterus
3. A: Embryo
   B: Zygote
   C: Oviduct
4. A: Zygote
   B: Embryo
   C: Uterus

Q. The attachment of zygote to the wall of uterus is called as _________ .

1. Villi
2. Junction
3. Space
4. Implantation

Q.

In girls, the ovaries and eggs become mature and ovaries begin to release ovum by the process of ___ .

1. oogenesis

2. oogamy

3. fertilisation

4. ovulation

Q.

The reproductive phase of a woman lies between her ___ and menopause.

Q.

What's placenta ? What function does it performs?

Q. The changes that occur at adolescence are controlled by chemical substances known as .

1. enzymes
2. hormones
3. plasma

Q. (b) Draw a labelled diagram to show the fertilisation of a human egg by a sperm to form a zygote.

Q. List the physical changes that occur in girls during puberty.

Q.

Reproductive age in women starts when their ______.

1. menstruation starts

2. breasts start developing

3. body weight increases

4. height increases

Q. Placenta is the special tissue through which nutrients are transferred from mother to the growing embryo.

1. True
2. False

Q.

What happens to the blastocyst immediately after implantation?

Q.

Puberty in female begins at what age?

1. 16 to 18 years.

2. 13 to 14 years.

3. 14 to 18 years.

4. 11 to 12 years.

Q. $\left(a\right)$ Name two male sex organs and two female sex organs which develop completely at puberty.

Q. Question 07 (i)
Adolescents should be careful about what they eat, because:

1. During adolescence, immune system is very weak
2. A proper diet is needed to cater for the rapid growth that take place in adolescents
3. Food tastes best during adolescence
4. All of these

Q. The natural way of fixing of the embryo in the wall of the uterus is called___.

Q. During delivery, why is it important for the baby to cry?

Q.

The following change does not occur during adolescence.

1. increase in height

2. mood changes

3. decrease in height

4. increases sweat gland secretion

Q. Find the incorrect statement about menstruation.

1. The onset of menstruation is called menarche
2. The end of menstruation is called menopause
3. It occurs once in every 28-30 days
4. Females have unlimited number of eggs at birth

Q. In girls, the ovaries and eggs become mature and ovaries begin to release ovum by the process of

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