Female Main Reproductive Organ

Q.

Describe in brief the structure and function of placenta.

Q. What is ovulation? When does it occur in females? (3 mark question)

Q. (a) What are the female sex cells in humans called ?
(b) Name the organ which produces female sex cells.

Q. Select the incorrect statement regarding placenta.

1. It is a special tissue that develops after implantation of embryo
2. It is developed between the uterine wall and the embryo
3. It contains villi on the mother’s side and blood spaces on the embryo’s side
4. It provides large surface area for transfer of substances from mother to the embryo

Q.

Gestation period in human beings is about

1. 26 weeks

2. 28 weeks

3. 31 weeks

4. 40 weeks

Q.

What is the function of placenta?

Q. GIFT involves transfer of ___.

1. A mixture of sperms and ova into the fallopian tubes
2. Ova into the fallopian tube
3. Zygote into the fallopian tube
4. Sperm into the uterus

Q.

What is the zona reticularis?

Q.

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

(a) Identify the reproductive cells A and B.

(b) Name the specific part of the reproductive system where the above cells are produced.

(c) Where in the female reproductive system do these cells unite ?

(d) Name the main hormones secreted by the (1) ovary (2) testes.

(e) Name an accessory gland found in the male reproductive system and state the function of its secretion.

Q.

A single ejaculation in a man contains about___sperms.

Q. What is the fate of unfertilized egg?

1. Gets implanted in the uterus
2. Gets washed away from uterus along with blood and mucous
3. Gets shrunk in the ovary
4. Gets degenerated in the ovary

Q.

How many sperm develop from 100 Spermatids?

Q. The egg remains viable for _____ after ovulation.

1. 2 days
2. 7 days
3. 14 days
4. 20 days

Q.

(a) Write the names of (i) male sex hormone, and (ii) female sex hormones.
(b) What name is given to the fusion of sperm and ovum?
(c) Name the tissue through which the foetus gets all the requirements from the mother's body.

Q.

X and Y are two human beings. The organ A in the reproductive system of X releases a mature gamete B once a month which goes into a tube-like structure C through a funnel-like opening. The organ D in the reproductive system of Y makes and releases gametes E which pass through a duct F and are introduced by an organ of Y, into the body of X. B and E fuse together in C to form a new cell G. The cell G divides repeatedly to form a ball of cells H which gets embedded in the lining of organ I of reproductive system of X where it grows and develops into a baby.
(a) Name (i) organ A, and (ii) gamete B.
(b) Write two names of tube-like structure C.
(c) Name (i) organ D, and (ii) gamete E.
(d) Write two names of duct F.
(e) Name (i) cell G (ii) ball of cells H, and (iii) organ.
(f) Out of X and Y, which one is (i) male, and (ii) female?

Q.

From where does a young embryo obtain its food?

Q.

Define the term gestation period.

Q.

Duration of menstrual cycle in human females is 20 days.

1. False

2. True

Q. Each ovary produces ________ .

1. sperms and testosterone
2. urine and semen
3. ova, estrogen and progesterone
4. bile juice and ezymes

Q. The diagram alongside represents two reproductive cells A and B. Study the same and then answer the questions that follow: [5 MARKS]
(a) Identify the reproductive cells A and B.
(b) Name the specific part of the reproductive system where the above cells are produced.
(c) Where in the female reproductive system do these cells unite?
(d) Name the main hormones secreted by the (1) ovary (2) testes.
(e) Name an accessory gland found in the male reproductive system and state the function of its secretion.

Q. Fertilization occurs in
(a) uterus
(b) oviduct
(c) ovary
(d) vagina

Q.

Identify the true/false statements. Correct each false statement to make it true.

Androgens are produced by Sertoli cells.

1. True
2. False

Q.

Menstruation occurs even during pregnancy.

1. True

2. False

Q.

The period of complete development of the fetus till birth is termed __________

Q. Can a teenager also release sperm? Under what conditions is it possible?

Q.

Do ovary secrete hormones?

Q.

Mention any one role of the placenta.

Q.

What is the time span of human gestation?

Q. Which of the following statements is correct?

1. Testes and ovaries are male and female gonads respectively
2. Seminiferous tubules and ovaries are male and female gonads respectively
3. Hormones released from gonads are responsible for sexual maturity of genitals in both males and females
4. Gonads are the site of production of male and female gametes.

Q. Name the following:
(i) The part of the ovary containing mature ovum.
(ii) Two accessory glands in the male reproductive system.
(iii) The organ of female in which the foetus develops.
(iv) The separation of the foetus from the mother's body.
(v) The part of the female reproductive system in which fertilization occurs.