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Chapter 8 : How Do Organisms Reproduce -2
GHS (RMSA) THORALAKKI, MALUR TALUK, KOLAR DISTRICT
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1) The anther contains :
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(a) sepals.
(b) ovules.
(c) carpel.
(d) pollen grains
2) Which of the following is not a part of the female reproductive system in human beings?
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(a) Ovary
(b) Uterus
(c) Vas deferens
(d) Fallopian tube
3) In a flower, the parts that produce male and female gametes are :
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(a) stamen and anther
(b) filament and stigma
(c) anther and ovary
(d) stamen and style
4) The correct sequence of events of sexual reproduction in a flower is :
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(a) pollination, fertilisation, seedling, embryo
(b) seedling, embryo, fertilisation, pollination
(c) pollination, fertilisation, embryo, seedling
(d) embryo, seedling, pollination, fertilisation
5) Characters transmitted from parents to offspring are present in :
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(a) cytoplasm
(b) ribosome
(c) golgi bodies
(d) genes
6) Characters that are transmitted from parents to offspring during reproduction show :
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(a) only similarities with parents
(b) only variations with parents
(c) both similarities and variations with parents
(d) neither similarities nor variations
7) The number of chromosomes in parents and offspring of a particular species remains constant due to :
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(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
8) Length of pollen tube depends on the distance between :
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(a) pollen grain and upper surface of stigma
(b) pollen grain on upper surface of stigma and ovule
(c) pollen grain in anther and upper surface of stigma
(d) upper surface of stigma and lower part of style
9) Which of the following statements are true for flowers? (i) Flowers are always bisexual (ii) They are the sexual reproductive organs (iii) They are produced in all groups of plants (iv) After fertilisation they give rise to fruits
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(a) (i) and (iv)
(b) (ii) and (iii)
(c) (i) and (iii)
(d) (ii) and (iv)
10) In the given figure the parts A, B and C are sequentially :
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(a) cotyledon, plumule and radicle
(b) plumule, radicle and cotyledon
(c) plumule, cotyledon and radicle
(d) radicle, cotyledon and plumule
11) Offspring formed as a result of sexual reproduction exhibit more variations because :
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(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
12) Reproduction is essential for living organisms in order to :
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(a) keep the individual organism alive
(b) fulfill their energy requirement
(c) maintain growth
(d) continue the species generation after generation
13) During adolescence, several changes occur in the human body. Mark one change associated with sexual maturation in boys :
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(a) cracking of voice
(b) increase in height
(c) loss of milk teeth
(d) weight gain
14) In human females, an event that reflects onset of reproductive phase is :
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(a) growth of body
(b) menstruation
(c) change in voice
(d) changes in hair pattern
15) In human males, the testes lie in the scrotum, because it helps in the :
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(a) process of mating
(b) formation of sperm
(c) easy transfer of gametes
(d) all the above
16) The correct sequence of organs in the male reproductive system for transport of sperms is :
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(a) testis → vasdeferens → urethra
(b) testis → ureter → urethra
(c) testis → urethra → ureter
(d) testis → vasdeferens → ureter
17) The following disease is not sexually transmitted :
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(a) Syphillis
(b) Hepatitis
(c) HIV - AIDS
(d) Gonorrhoea
18) The site of fertilisation in human beings :
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(a) Ovary
(b) Cervix
(c) Uterus
(d) Fallopian tube
19) The site of implantation in female reproductive system :
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(a) Ovary
(b) Cervix
(c) Uterus
(d) Fallopian tube
20) How is the sperm genetically different from the egg?
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(a) The sperm contain an X-chromosome whereas an egg contain either X or Y-chromosome.
(b) The sperm contain either X or Y-chromosome whereas an egg will always have an X-chromosome
(c) The sperm and egg both contain either X or Y-chromosome
(d) The sperm and egg both contain Y-chromosome
21) The ratio of chromosome number between an egg and its zygote is "
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(a) 1 : 1
(b) 2n : 2n
(c) 2 : 1
(d) 1 : 2
22) Which of the following is not an outcome of variations present in population ?
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(a) Bacterial resistance to heat
(b) Maintenance of body design features
(c) Different colour of eyes
(d) Survival of species over time
23) The migration of pollen grains to stigma is called :
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(a) fertilization
(b) reproduction
(c) fusion
(d) pollination
24) Which of the following helps in transport and nutrition of sperms ?
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(a) Glandular secretions
(b) Blood
(c) Urine
(d) Mucus
25) Which of the following is embedded in the uterine wall ?
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(a) Zygote
(b) Embryo's head
(c) Egg
(d) Placenta
26) The given figure is L.S of flower just before fertilization. Where will the male and female gametes be just before fertilization ?
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(a) Male gamete at 1 and Female gamete at 5
(b) Male gamete at 1 and Female gamete at 4
(c) Male gamete at 2 and Female gamete at 4
(d) Male gamete at 3 and Female gamete at 5
27) Oral contraceptive prevent the :
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(a) fertiliaztion
(b) ovulation
(c) implantation
(d) entrance of sperms in vagina
28) Menstrual cycle is generally of :
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(a) 21 days
(b) 28 days
(c) 35 days
(d) 40 days
29) In mammals the testes are located outside the abdominal cavity in scrotum because :
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(a) presence of urinary bladder
(b) presence of rectum
(c) long vas-deferens
(d) requirement of low temperature for spermatogenesis
30) Dramatic changes of body features associated with puberty are mainly because of secretion of :
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(a) oestrogen from testes and testosterone from ovary
(b) estrogen from adrenal gland and testosterone from pituitary gland
(c) testosterone from testes and estrogen from ovary
(d) testosterone from thyroid gland and estrogen from pituitary gland
31) The figure shows the placenta of a pregnant woman. Which of the following will increase in concentration in the blood at it flows from 1 and 2 ?
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(a) Glucose
(b) Carbon dioxide
(c) Oxygen
(d) Amino acids
32) The process of release of eggs from ovary is called:
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(a) Fertilization
(b) Implantation
(c) Ovulation
(d) Menstruation
33) Ovulation in female human beings stops after the age of :
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(a) 15 - 20
(b) 25 - 30
(c) 35 - 40
(d) 45 - 50
34) During reproduction, DNA replication is essential. Because :
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(a) DNA contains information for the inheritance of features from parents to offsprings.
(b) DNA copying helps daughter cells to get same number of chromosomes.
(c) It leads to formation of genetically identical daughter cells.
(d) All the above
35) AIDS infection is caused by :
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(a) Bacterium
(b) Protozoan
(c) Virus
(d) Fungus
L.S. OF FLOWER :
GERMINATION OF POLLEN ON STIGMA :
GOPALA RAO C K
GHS (RMSA) THORALAKKI, MALUR TALUK, KOLAR DISTRICT 563137
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