ICSE 2009 Solved Important Papers of Biology By Mr. M. P. Keshari

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Biology - The Reproductive System (Solved)

Question .1. Name :

(i) The organ in which foetus develops in a mammalian female.

(ii) The male reproductive cells of mammals.

(iii) The part of female reproductive system where fertilization takes place.

(iv) Produces male gamets in man.

(v) The fluid surrounding the developing embryo.

(vi) The structure in which testes are present in man.

(vii) The period of intrauterine development of embryo.

(viii) The canal through which testes descend into scrotum just before birth in a huma male child.

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Question .2. Write true or false :

(i) Zygote is the product of fusion of male and female gametes.

(ii) Tubectomy involves the cutting and tying of vas deferens in male.

(iii) Pregnancy in woman can be prevented by the method of vasectomy.

(iv) Fertilization is the product of fusion of egg nucleus and sperm nucleus.

(v) Fertilization of ova in human female occur in the vagina.

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Question .3. Choose the correct one :

(i) Fertilization of human egg normally occurs in the (uterus, fallopian tube, vagina).

(ii) The (epididymis, vas deferens, seminal vesicle) store sperm.

(iii) Sterlization of female involves cutting and tying the (ureter, uterus, urethra, oviduct).

(iv) The site of fertilization in human female is (vagina, oviduct, uterus).

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Question .4. Write in logical sequence :

(i) Implantation, ovulation, childbirth, gestation, fertilization.

(ii) Sperm duct, penis, testis, sperm, semen.

(iii) Graafian follicle, ostium, ovum, uterus, fallopian tube. 

(iv) Implantation, fertilization, ovulation, gestation.

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Q.5. Uterus : Implantation : : Fallopian tube : ………… .

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Question .6. Give the function of :

(i) Testis.

(ii) Scrotum.

(iii) Placenta.

(iv) Acrosome.

(v) Amniotic fluid.

(vi) Amnion.

(vii) Seminiferous tubule.

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Question .7. Structure and functional activity of Corpus luteum and …………. .

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Question .8. Pick the odd one :

(i) Larynx, pancreas, testis, ovary.

(ii) Ovary, fallopian tube, ureter, uterus.

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Question .9. Explain briefly :

Most often only one embryo is formed at a time although there are two ovaries in women.

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Question . 10. What is meant by gestation period ?

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Question .11. Differentiate between :

(i) Structure of sperm and structure of ovum.

(ii) Prostate and cowpers gland (nature of secretion).

(iii) Implantation and gestation (definition).

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Question .12. Draw a diagram of human sperm and label the following parts : head, middle piece, acrosome, mitochondria, tail.

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Question .13. The following diagram represents the ventral view of the female reproductive system :

Fig.

(i) Label the parts indicated by guidelines 1 to 8.

(ii) How does the uterus prepare for the reception of a zygote ?

(iii) What happens to the uterus if fertilization takes place ?

(iv) What happens to the uterus if fertilization has failed to take place ?

(v) Name the fully developed part of ovary containing the ovum.

(vi) Name the organs of the female body in which the foetus develops.

(vii) Name the parts homologous to penis of male.

(viii) What is ovulation ?

(ix) Which two hormones are secreted by ovary ?

(x) How does the human embryo developing in the uterus obtain its nourishment ?

(xi) State the function of (1) Placenta and (2) amniotic fluid.

(xii) Differentiate between identical twins and fraternal twins.

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Question .14. Given below is the outline of the cross section of the male reproductive system :

Fig.

(i) Copy the outline onto your answersheet in pencil and label the following parts – testis, epididymis, seminal vesicles, vas deferens.

(ii) Name the hormone produced by the testis.

(iii) Why are sperms produced in large numbers ?

(iv) State the function of the seminal vesicles.

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Question .15. The diagram given below is that of a developing human foetus in the womb. Study the same and then answer the questions that follow :

Fig.

(i) Name the parts ‘1’ to ‘5’ indicated by guidelines.

(ii) What term is given to the period of development of the foetus in the womb.

(iii) How many days does the foetus take to be fully developed ?

(iv) Mention two functions of the parts labelled ‘2’ other other than its endocrine function.

(v) Name the hormone (any one) produced by the part ‘2’.

(vi) Name the function of part labelled ‘3’.

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Question .16. The diagram given below is one of the system in the male human body :

Fig.

(i) Write down the name of the organ in the system.

(ii) Label guidelines ‘1’ to ‘5’.

(iii) Write down the functions of guideline numbered 2 and 5.

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