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WorksheetsPlant Reproduction
Total questions: 15
Worksheet time: 13mins
Which part may develop into a fruit?
E
D
C
A
In the following questions, a
statement of assertion is followed by a statement
of reason. Mark the correct choice as:
(a) If both Assertion and Reason are true and
Reason is the correct explanation of Assertion.
(b) If both Assertion and Reason are true but Reason
is not the correct explanation of Assertion.
(c) If Assertion is true but Reason is false.
(d) If both Assertion and Reason are false.
Assertion : Exine of a pollen grain is made up of
sporopollenins which are resistant to high
temperatures, strong acids or alkali as well as
enzymatic degradation.
Reason: Sporopollenins are absent in the region
of germ pores.
a
b
c
d
Assertion: Apomixis is a form of asexual
reproduction that mimics sexual reproduction in
plants.
Reason: Apomixis involves the production of
seeds without the fusion of gametes.
a
b
c
d
Assertion: The largest cell of the embryo sac is
central cell.
Reason: It consists of a fused nuclei.
a
b
c
d
Both chasmogamous and cleistogamous flowers are present in
Rose
Commelina
Helianthus
Gossypium
In albuminous seeds, food is stored in _______ and in non albuminous seeds, it is stored in _______.
endosperm, cotyledons
cotyledons, endosperm
nucellus, cotyledons
endosperm, radicle
Identify the wrong statement regarding post-fertilisation development.
The ovary wall develops into pericarp.
The outer integument of ovule develops into tegmen.
The fusion nucleus (triple nucleus) develops into endosperm.
The ovule develops into seed.
The cells of endosperm have 24 chromosomes. What will be the number of chromosomes in the gametes ?
48
24
12
8
The portion of embryonal axis between plumule (future shoot) and cotyledons is called
hypocotyl
epicotyl
coleorhiza
coleoptile
How many meiotic divisions are required for the formation of 100 pollen grains ?
100
50
25
26
How many pollen mother cells should undergo meiotic division to produce 64 pollen grains ?
64
32
16
8
The three cells found in a pollen grain when it is shed at 3-celled stage are
1 vegetative cell, 1 generative cell, 1 male gamete
1 vegetative cell, 2 male gametes
1 generative cell, 2 male gametes
either OPTION 1 or 2.
The total number of nuclei involved in double fertilisation in angiospersm are
2
3
4
5
Total number of meiotic division required for forming 100 zygotes/100 grains of wheat is
100
50
125
150
