Chapter 8: How do Organisms Reproduce
Q1) Fruits are formed from
a) Stamen
b) Stigma
c) Ovary
d) Ovule
Correct Answer: Option (c)
Q2) Reproduction is essential for living organisms in order to ……………………
a) Keep the individual organism alive
b) Fulfill their energy requirement
c) Maintain growth
d) Continue the species generation after generation
Correct Answer: Option (d)
Q3) The male reproductive parts of a flower, the stamens, are collectively known as
a) Androecium
b) Filament
c) Anther
d) Gynoecium
Correct Answer: Option (a)
Q4) In the below figure, parts A, B and C are sequentially
a) Cotyledon, plumule and radicle
b) Plumule, radicle and cotyledon
c) Plumule, cotyledon and radicle
d) Radicle, cotyledon and plumule
Correct Answer: Option (c)
Q5) Which of the following diseases is transmitted sexually?
a) Kala Azar
b) Jaundice
c) Cholera
d) Syphilis
Correct Answer: Option (d)
Q6) IUCD is for
a) Vegetative propagation
b) Contraception
c) Increasing fertility
d) Avoiding miscarriage
Correct Answer: Option (b)
Q7) Which among the following is not the function of the 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) (ii) and(iii)
c) (iii) and(iv)
d) (i) and(iv)
Correct Answer: Option (c)
Q8) Which of the following is a contraceptive?
a) Coppert
b) Condom
c) Diaphragm
d) All of these
Correct Answer: Option (d)
Q9) The correct sequence of organs in the male reproductive system for the transport of sperms is
a) Testis → vas deferens → urethra
b) Testis → ureter → urethra
c) Testis → urethra → ureter
d) Testis → vas deferens → ureter
Correct Answer: Option (a)
Q10) During adolescence, several changes occur in the human body. Mark one change from the following associated with sexual maturation in boys
a) Increase in height
b) Cracking of voice
c) Weight gain
d) Loss of milk teeth
Correct Answer: Option (c)
Q11) AIDS is a deadly disease which is caused by
a) a protozoan
b) a fungus
c) a bacterium
d) a virus
Correct Answer: Option (d)
Q12) Which among the following diseases is not sexually transmitted?
a) Syphilis
b) Hepatitis
c) HIV-AIDS
d) Gonorrhea
Correct Answer: Option (b)
Q13) A population of thermophilic archaebacteria are generally found in hot springs. Any change to the temperature of the water affects the survival of the archaebacteria. If the temperature of hot springs gets reduced, change in which component can allow the survival of a few members of these archaebacteria?
a) cell wall
b) cytoplasm
c) DNA
d) ribosomes
Correct Answer: Option (a)
Q14) A small portion of the oviducts of a woman is removed by surgical operation, and the cut ends are ligated is
a) copperT
b) Tubectomy
c) Vasectomy
d) Diaphragm
Correct Answer: Option (b)
Q15) What can be concluded about the division in plasmodium?
a) The cyst divides repeatedly to form many daughter cells.
b) The cell divides multiple times giving rise to many daughter cells.
c) The nucleus divides repeatedly inside the cell to form new daughter cells.
d) The cyst enlarges in size and then bursts producing many new daughter cells.
Correct Answer: Option (b)
Q16) The ratio of the number of chromosomes in a human zygote and a human sperm is
a) 2:1
b) 3:1
c) 1:2
d) 1:3
Correct Answer: Option (a)
Q17) How do spores develop into Rhizopus?
a) spores divide and grow into a new individual
b) spores combine with other spores and grow
c) spores enlarge in size for the growth of new individual
d) spores land on other organisms and increase with their growth in size
Correct Answer: Option (a)
Q18) The image shows the structure of a flower.
Which process will likely be disturbed or not occur if the labelled part is removed from the flower?
a) formation of fruit
b) transport of pollen
c) formation of pollen
d) development of pollen tube
Correct Answer: Option (a)
Q19) Which event will likely occur in the ovaries of females after attaining puberty?
a) fertilization
b) synthesis of eggs
c) production of eggs
d) growth and development of the embryo
Correct Answer: Option (c)
Q20) Which option correctly shows the path that the sperms take when they are released from the male reproductive system?
(a) testis → ureter → urethra → penis
(b) testis → vas deferens → ureter → penis
(c) testis → ureter → vas deferens → penis
(d) testis → vas deferens → urethra → penis
Correct Answer: Option (d)