CBSE Class 7 Science Reproduction in Plants MCQs Set B

Question: Stem cuttings are commonly used for propagation in
a) rubber
b) mangoes
c) sugarcane
d) jasmine
Answer: c

Question: What is micropropagation?
a) Germination of seed with cotyledons above the soil
b) A technique to obtain new plants by cultivating the cells or tissues in culture medium
c) The mature stage of endosperm
d) To manufacture hormones
Answer: b

Question: What is parthenogenesis?
a) Development of fruit without hormones
b) Development of fruit without fertilisation
c) Development of egg without fertilisation
d) Development of embryo without fertilisation
Answer: c

Question: Which of the following is propagated by means of cutting?
a) Sugarcane
b) Coffee
c) Citrus
d) All of these
Answer: d

Question: Hydra reproduces by –
a) budding
b) spore formation
c) binary fission
d) fragmentation
Answer: a

Question: Pollination is a characteristic of
a) angiosperms
b) pteridophytes
c) bryophytes
d) all of the options
Answer: a

Question: Pollen grains are produced in –
a) anther
b) filament
c) stigma
d) style
Answer: a

Question: Seeds in a matured ovary develop from –
a) ovule
b) stigma
c) ovum
d) pollen grains
Answer: a

Question: Pollination is best defined as
a) the transference of pollens from anthers to stigma
b) the germination of pollen grains
c) visiting of flowers by ants
d) the growth of pollen tube in the ovule
Answer: a

Question: A method in which roots are induced on the stem while it is still attached to the parent plant is called
a) layering
b) cutting
c) grafting
d) vivipary
Answer: a

Question: During grafting root stock is generally derived from a plant
a) efficient in water and mineral absorption
b) resistant to diseases
c) that grows strong and healthy branches
d) all of the options
Answer: d

Question: Seeds and fruits dispersed by wind have –
a) wings
b) hairs
c) censer mechanism
d) all of these
Answer: b

Question: A method in which roots are initiated on the stem while still attached with the parent plant is called –
a) grafting
b) budding
c) layering
d) tissue culture
Answer: c

Question: Stigma, style and ovary are the parts of –
a) androecium
b) gynoecium
c) anther
d) sepals
Answer: b

Question: Ferns, mosses, lichen and fungi reproduce through –
a) spore formation
b) binary fission
c) budding
d) fragmentation
Answer: a

Question: Scion is a term in relation to
a) layering
b) cutting
c) grafting
d) micropropagation
Answer: c

Question: In which of the following plants vegetative reproduction takes place with the help of bulbils?
a) Colocasia
b) Zingiber
c) Agave
d) Vallisneria
Answer: c

Question: A plant can be grown from tissue-culture is –
a) orchid
b) pear
c) grapevine
d) cherry
Answer: a

Question: Which does not belong to bisexual flower?
a) mustard
b) rose
c) petunia
d) papaya
Answer: d

Question: Double fertilisation is characteristic of
a) angiosperms
b) algae
c) gymnosperms
d) bryophytes
Answer: a

Question: Fertilisation means
a) transfer of male gamete to female gamete
b) adhesion of male and female reproduction organs
c) fusion of nuclei of male and female gametes
d) the shedding of gametes from a reproductive organ
Answer: c

Question: During grafting, the portion of plant that is grafted is called:
a) stock
b) scion
c) stalk
d) stem
Answer: b

Question: Cross-pollination is advantageous because it results in
a) formation of weaker progeny
b) formation of better progeny
c) formation of male offspring
d) formation of female offspring
Answer: b

Question: Self-pollination means
a) germination of pollens within the anther
b) transference of pollens from anthers to the stigma within the same flower
c) transference of pollens from one flower to another on the same plant
d) presence of male and female sex organs in the same flower
Answer: b

Question: In roses, the method commonly used to produce new plants is:
a) tissue culture
b) cutting
c) layering
d) None of the options
Answer: b

Question: Which of the following event is NOT directly affected by light in a vegetable garden?
a) Seed germination
b) Food manufacture
c) Fertilisation
d) Flowering
Answer: c

Question: The group of petals is called:
a) sepals
b) calyx
c) root
d) None of the options
Answer: d

Question: When pollen of a flower is transferred to the stigma of another flower of the same plant the pollination is referred to as
a) autogamy
b) allogamy
c) xenogamy
d) geitonogamy
Answer: d

Question: Fertilisation in which male gametes are carried through pollen tube is known as
a) chalazogamy
b) siphonogamy
c) syngamy
d) porogamy
Answer: b