Complete guide to "How do Organisms Reproduce" for Biology students. Below you will find important questions and model answers to help you prepare.
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In the list of organisms given below, those that reproduce by the asexual method are (i) banana (ii) dog (iii) yeast (iv) Amoeba
(ii) and (iv)
(i), (iii) and (iv)
(i) and (iv)
(ii), (iii) and (iv)
In a flower, the parts that produce male and female gametes (germ cells) are
stamen and anther
filament and stigma
anther and ovary
stamen and style
Which of the following is the correct sequence of events of sexual reproduction in a flower?
pollination, fertilisation, seedling, embryo
seedling, embryo, fertilisation, pollination
pollination, fertilisation, embryo, seedling
embryo, seedling, pollination, fertilisation
Offspring formed by asexual method of reproduction have greater similarity among themselves because (i) asexual reproduction involves only one parent (ii) asexual reproduction does not involve gametes (iii) asexual reproduction occurs before sexual reproduction (iv) asexual reproduction occurs after sexual reproduction
(i) and (ii)
(i) and (iii)
(ii) and (iv)
(iii) and (iv)
Characters transmitted from parents to offspring are present in
cytoplasm
ribosome
golgi bodies
genes
Characters that are transmitted from parents to offspring during reproduction show
only similarities with parents
only variations with parents
both similarities and variations with parents
neither similarities nor variations
A feature of reproduction that is common to Amoeba, Spirogyra and Yeast is that
they reproduce asexually
they are all unicellular
they reproduce only sexually
they are all multicellular
In Spirogyra, asexual reproduction takes place by
breaking up of filaments into smaller bits
division of a cell into two cells
division of a cell into many cells
formation of young cells from older cells
The ability of a cell to divide into several cells during reproduction in Plasmodium is called
budding
reduction division
binary fission
multiple fission
The correct sequence of reproductive stages seen in flowering plants is
gametes, zygote, embryo, seedling
zygote, gametes, embryo, seedling
seedling, embryo, zygote, gametes
gametes, embryo, zygote, seedling
The number of chromosomes in parents and offsprings of a particular species remains constant due to
doubling of chromosomes after zygote formation
halving of chromosomes during gamete formation
doubling of chromosomes after gamete formation
halving of chromosomes after gamete formation
In Rhizopus, tubular thread-like structures bearing sporangia at their tips are called
filaments
hyphae
rhizoids
roots
Vegetative propagation refers to formation of new plants from
stem, roots and flowers
stem, roots and leaves
stem, flowers and fruits
stem, leaves and flowers
Factors responsible for the rapid spread of bread mould on slices of bread are (i) large number of spores (ii) availability of moisture and nutrients in bread (iii) presence of tubular branched hyphae (iv) formation of round shaped sporangia
(i) and (iii)
(ii) and iv)
(i) and (ii)
(iii) and (iv)
Length of pollen tube depends on the distance between
pollen grain and upper surface of stigma
pollen grain on upper surface of stigma and ovule
pollen grain in anther and upper surface of stigma
upper surface of stigma and lower part of style
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
(i) and (iv)
(ii) and (iii)
(i) and (iii)
(ii) and (iv)
Which among the following statements are true for unisexual flowers? (i) They possess both stamen and pistil (ii) They possess either stamen or pistil (iii) They exhibit cross pollination (iv) Unisexual flowers possessing only stamens cannot produce fruits
(i) and (iv)
(ii), (iii) and (iv)
(iii) and (iv)
(i), (iii) and (iv)
Which among the following statements are true for sexual reproduction in flowering plants? (i) It requires two types of gametes (ii) Fertilisation is a compulsory event (iii) It always results in formation of zygote (iv) Offspring formed are clones
(i) and (iv)
(i), (ii) and (iv)
(i), (ii) and (iii)
(i), (ii) and (iv)
In the following figure, the parts A, B and C are sequentially
cotyledon, plumule and radicle
plumule, radicle and cotyledon
plumule, cotyledon and radicle
radicle, cotyledon and plumule
Offspring formed as a result of sexual reproduction exhibit more variations because
sexual reproduction is a lengthy process
genetic material comes from two parents of the same species
genetic material comes from two parents of different species
genetic material comes from many parents
Reproduction is essential for living organisms in order to
keep the individual organism alive
fulfill their energy requirement
maintain growth
continue the species generation after generation
During adolescence, several changes occur in the human body. Mark one change associated with sexual maturation in boys
loss of milk teeth
increase in height
cracking of voice
weight gain
In human females, an event that reflects onset of reproductive phase is
growth of body
changes in hair pattern
change in voice
menstruation
In human males, the testes lie in the scrotum, because it helps in the
process of mating
formation of sperm
easy transfer of gametes
all of these
Which among the following is not the function of testes at puberty? (i) formation of germ cells (ii) secretion of testosterone (iii) development of placenta (iv) secretion of estrogen
(i) and (ii)
(ii) and (iii)
(iii) and (iv)
(i) and (iv)
The correct sequence of organs in the male reproductive system for transport of sperms is
testis → vasdeferens → urethra
testis → ureter → urethra
testis → urethra → ureter
testis → vasdeferens → ureter
Which among the following diseases is not sexually transmitted?
Syphillis
Hepatitis
HIV - AIDS
Gonorrhoea