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Published on: 09/09/2019
Reproduction in Plants
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Questions + Answers key
Take MCQ Science Test
1.
The cells which result after __________ of the gametes is called __________.
2.
The _______ is the male reproductive part of flower while _________ is the female reproductive part of a flower.
3.
The scars present on the potato tubers are called ___________.
4.
Roots, stems and leaves are called ___________ of a plant.
5.
Seed dispersal takes place by means of _________, __________ and __________.
6.
Group the seeds given in figure (i) to (iii) according to their means of dispersion.
(a) Seed dispersed by wind.
(b) Seed dispersed by water.
(c) Seed dispersed by animal.
.png)
7.
What is a bud? Which organism reproduces by budding? Given the diagrammatic representation of budding in a plant.
8.
Collect some flower of different plants like papaya, rose, mustard, lady's finger, Petunia, cucumber, corn, pea, etc. Group them under following heads.
(a) Which of these plants have unisexual flowers?
(b) Which of these plants have bisexual flower?
(c) What is the other name of unisexual and bisexual flower?
9.
Describe the different methods of asexual reproduction. Give examples.
10.
The ovaries of different flowers may contain
only one ovule
many ovules
one to many ovules
only two ovules
11.
Lila observed that a pond with clear water was covered up with a green algae within a week.
By which method of reproduction did the algae spread so rapidly?
Budding
Sexual reproduction
Fragmentation
Pollination
12.
The 'eye' of the potato plant is what?
The root is to any plant
The bud is to a flower
The bud is to Bryophyl/um leaf
The anther is to stamen
13.
Bryophyllum can reproduce by its
stem
leaves
roots
flower
14.
The reproductive part of a plant is the
leaf
stem
root
flower
15.
Bryophyllum leaves reproduce using which mode of reproduction?
16.
Name two plants where vegetative reproduction takes place by roots.
17.
Boojho had the following parts of a rose plant-a leaf, roots, a branch, a flower, a bud and pollen grains. Which of them can be used to grow a new rose plant?
18.
Pick the odd one out from the following on the basis of mode of reproduction and give reason for it,
Sugarcane, Potato, Rice, Rose.
19.
Name some fruit bearing plants. Now make a table and describe the method of seed dispersal in these fruits as well as the part which helps in the seed dispersal.
20.
Observe the following figure and answer the following questions.
(a) Which type of vegetative propagation has been shown in this figure?
(b) Name two plants where this method of vegetative reproduction takes place.
(c) Is this a sexual or asexual mode of reproduction?
(d) Label the part (A) and (B) in the given figure.
.png)
21.
Pistil is the male reproductive part of a flower.
22.
Two individuals are needed for the sexual reproduction.
23.
Maple seed is dispersed by explosion mechanism.
24.
Jasmine is grown by grafting.
25.
Potato reproduces from seeds.
26.
Layering
27.
Bryophyllum
28.
Scion
29.
Grafting
30.
Sugarcane
1.
( )
fusion, zygote
2.
( )
stamen, pistil
3.
( )
eye
4.
( )
vegetative part
5.
( )
wind, water, animals
6.
The seeds and their means of dispersal can be given as follows:
(a) The seed of maple is dispersed by wind. It has winged seed which are light in weight.
a.png)
(b) Seed of aak or Madar has hairy outgrowth which makes it lighter and can be dispersed by wind
b.png)
(c) Seed of Xanthium have numerous spines on them which gets attached to the fur of animals. Hence, these are dispersed by animals.
c.png)
None of the seed given in the figure is dispersed by water.
7.
Buds are small bulb-like projections of yeast cell.
These are asexual reproducing bodies of yeast. Diagrammatic representation of budding in yeast
8.
(a) Unisexual flowers are papaya, cucumber, corn.
(b) Bisexual flowers are rose, mustard, lady's finger, Petunia, pea.
(c) Unisexual flowers are also called as incomplete flower while bisexual flowers are called hermaphrodite or complete flowers.
9.
Different methods of asexual reproduction are:
(i) Fragmentation Parent body divides into distinct pieces or fragments, each of which grows into new individuals, e.g. Spirogyra (an alga).
(ii) Budding A small part of parent body grows out as a bud, which detaches and becomes a new individual. Sometimes, a chain of buds is also formed, e.g. yeast, corals, sponges, etc.
(iii) Spore formation Parent plant develops and releases thousands of tiny, spherical and unicellular asexual spores, which are protected by a cell wall. When these spores find favourable environment, they grow into identical new plants, e.q. mosses, ferns, bread moulds, etc.
(iv) Vegetative propagation Many plants like cacti, potato, rose, sugarcane, etc., reproduce by this method. New plants are produced from vegetative parts of mother plant such as roots, stem, buds and leaves.
10.
(c)
one to many ovules
11.
(c)
Fragmentation
12.
(b)
The bud is to a flower
13.
Bryophylum can reproduce by its leaves.
14.
The reproductive part of a plant is the flower.
15.
Asexually by vegetative propagation.
16.
Sweet potato and dahlia develop new plants through their roots by the process of vegetative reproduction.
17.
Branch can be used to grow a new rose plant. As, rose reproduces by vegetative propagation, i.e. stem cutting method.
18.
The odd one out is rice.
In the above given pairs as rice reproduces by sexual reproduction and sugarcane, potato and rose reproduce vegetatively.
19.
The method of seed dispersal in the fruits and the parts which help in the seed dispersal:
| Name of fruits bearing plants | Agents through which seeds are dispersed | Parts or seeds which helps in dispersal |
| Drumstick | Air/wind | Winged seeds |
| Sunflower | Wind | Hairy seeds |
| Gokhru | Animal | Spines and Hooks |
| Coconut | Water | Fibrous coating |
| Lotus | Water | Thalamus float in water |
| Poppy | Explosion | Pericarp bursts |
| Grass | Wind | minute, light weighted seeds |
20.
(a) The given figure shows grafting method (vegetative reproduction),
(b) Mango and rose are the two plants where this method of vegetative takes place,
(c) It is asexual method of reproduction,
(d) (A) Scion
(B) Stock.
21.
(b)
22.
(a)
23.
(b)
24.
(b)
25.
(b)
26.
( )
Jasmine
27.
( )
Leaves
28.
( )
Is the shoot part
29.
( )
Mango
30.
( )
Through stem cutting
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