Reproduction in humans

1.In human males, the testes lie in the scrotum, because it helps in the
(a) process of mating
(b) formation of sperms
(c) easy transfer of gametes
(d) secretion of estrogen
2. Which among the following diseases is not sexually transmitted?
(a) Syphyllis
(b) Hepatitis
(c) HIV-AIDS
(d) Gonorrhea
3. Which of the following method of contraception protects from acquiring sexually transmitted diseases?
(a) Surgery
(b) Condoms
(c) Copper-T
(d) Oral-pills
4. The embryo in humans gets nutrition from the mother’s blood with the help of a special tissue called
(a) Placenta
(b) Villi
(c) Uterus
(d) Womb
5. Along the path of the vas-deferens the secretions of which gland provide nutrition to the sperms?
(a) Prostate glands
(b) Seminal vesicles
(c) Scrotum
(d) Urinary bladder
6. In human beings, the fertilization occurs in the
(a) uterus
(b) ovaries
(c) fallopian tubes
(d) vagina
7. The period during adolescence when the reproductive tissues begin to mature is called
(a) ovyfetion
(b) puberty
(c) germination
(d) propagation
8. The process of release of eggs from the ovary is called
(a) menstruation
(b) reproduction
(c) insemination
(d) ovulation
9. The period of pregnancy is called
(a) gestation period
(b) incubation period
(c) ovulation
(d) menstruation period
10. The number of chromosomes in parents and offsprings of a particular species remains constant due to:

(a) Doubling of chromosomes after zygote formation

(b) Halving of chromosomes during gamete formation

(c) Doubling of chromosomes after gamete formation

(d) Halving of chromosomes after gamete formation
11. Which among the following are not the functions of testes at puberty?

(i) Formation of germ cells

(ii) Secretion of testosterone

(iii) Development of placenta

(iv) Secretion of estrogen

(a) (i) and (ii)

(b) (i) and (iii)

(c) (ii) and (iv)

(d) (iii) and (iv)
12. Which out of the following processes does not lead to the formation of clones:

(a) Fertilisation

(b) Fission

(c) Tissue culture

(d) Fragmentation
13. The ratio of number of chromosomes in a human zygote and a human sperm is:

(a) 2 : 1

(b) 3 : 1

(c) 1 : 2

(d) 1 : 3
14. The two oviducts in a human female unite into an elastic bag like structure known as
a. Vagina
b. Uterus
 c. Fallopian tube
         d. Cervix
15. . Which of the following disease is transmitted sexually?
         a. Kala azar
         b. Jaundice
         c. Cholera
         d. Syphilis
16.. Which of the following is a contraceptive?
         a. Copper T
         b. Condom
         c. Diaphragm
         d. All of these
17.Where does fertilization occur in human females?
         a. Uterus
         b. Cervix
         c. Oviduct
         d. Vagina
18. Growing foetus derive nutrition from mother's blood through
         a. Uterus
         b. Fallopian tube
         c. placenta
         d. cervix
19. What is the puberty age in human males?
         a. 8-10
         b. 10-12
         c. 12-14
         d. 14-16
20. IUCD is for
           a.  propagation
           b. Contraception
           c. Increasing fertility
           d. Avoiding miscarriage
21. Tubectomy is carried out by blocking the
(a) oviduct
(b) uterus
(c) cervix
(d) vagina
22. Fertilisation occurs in human female when the sperms and ovum reach simultaneously at
(a) fallopian tube
(b) uterus
(c) vagina
(d) cervix
23. AIDS is a sexually transmitted disease caused due to an infection by a
(a) bacteria
(b) protozoa
(c) virus
(d) Plasmodium
24. Characters that are transmitted from parents to offspring during reproduction show
(a) only similarities with parents
(b) only variations with parents
(c) both similarities and variations with parents
(d) neither similarities nor variations
25. Offspring formed as a result of sexual reproduction exhibit more variations because
(a) sexual reproduction is a lengthy process
(b) genetic material comes from two parents of the same species
(c) genetic material comes from two parents of different species
(d) genetic material comes from many parents


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