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Published on: 02/08/2018
In this question paper prepared from the chapter Reproduction in Plants. The important questions are covers from the Higher Order Thinking Questions and Value Based Questions.
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Questions + Answers key
Take MCQ Science Test
1.
How does male gamete present in pollen grain reaches female gamete present in ovule?
2.
What is a bud? Which organism reproduces by budding? Given the diagrammatic representation of budding in a plant.
3.
In the figure given below, label the part marked (i), (ii) and (iii).
.png)
4.
Explain the differences between self-pollination and cross-pollination.
5.
State the main differences between asexual and sexual reproduction.
6.
Explain what do you understand by sexual reproduction?
7.
The female gamete of a flowering plant is present in which part?
Ovules
Buds
Pollen
Anther
8.
The mode of vegetative reproduction where scion and stock are used is called
budding
grafting
cutting
layering
9.
Which among the following do not reproduce by vegetative reproduction?
Wheat
Sugarcane
Rose
Jasmine
10.
The fusion of male and female gametes is called
ovulation
population
pollination
fertilisation
11.
Which of the following statements is/are true for sexual reproduction in plants?
(i) Plants are obtained from seeds
(ii) Two plants are always essential
(iii) Fertilisation can occur only after pollination
(iv) Only insects are agents of pollination
Choose from the options given below.
(i) and (iii)
only (i)
(ii) and (iii)
(i) and (iv)
12.
The ovaries of different flowers may contain
only one ovule
many ovules
one to many ovules
only two ovules
13.
Which of the following parts of a plant take part in sexual reproduction?
(i) Flower
(ii) Seed
(iii) Fruit
(iv) Branch
Choose the correct answer from below.
(i) and (ii)
(i), (ii) and (iii)
(iii) and (iv)
(ii), (iii) and (iv)
14.
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
15.
Seeds of drumstick and maple are carried to long distances by wind because they possess.
winged seeds
large and hairy seeds
long and ridged fruits
spiny seeds
16.
Mature ovary forms the
seed
stamen
pistil
fruit
17.
Bryophyllum leaves reproduce using which mode of reproduction?
18.
In which part of flower does fertilisation occur?
19.
A yellow powdery substance is present in the anther which participates in reproduction process. Name this substance.
20.
Name two plants where vegetative reproduction takes place by roots.
21.
Flowers are colourful and fragrant. Give reason supporting the statement.
22.
Fungus, moss and fern reproduce by a common method of asexual reproduction. Name the method.
23.
Explain the process of reproduction in plants, involving the fusion of cells from male and female parts of a flower.
24.
In the figure of a flower given below, label the parts whose functions are given below and give their names.
(a) The part which contains pollen grains.
(b) The part where the female gamete is formed.
(c) The female reproductive part, where pollen grains germinate.
(d) The colourful part of flower which attracts insects.
.png)
1.
After pollination, the pollen grains fall on the surface of stigma and germinate to form a long tube, reaching the ovules inside the ovary, the egg or female gamete is present in the ovule.
The outer surface of pollen grains rupture and male gametes are released to fuse with egg.
2.
Buds are small bulb-like projections of yeast cell.
These are asexual reproducing bodies of yeast. Diagrammatic representation of budding in yeast
3.
The parts in the given figure are labelled as follows
.png)
4.
The differences between self-pollination and cross-pollination are
| Self-pollination | Cross-pollination |
| Pollens are transferred to the stigma of same flower. | Pollens are transferred to the stigma of different flower. |
| Do not require pollinating agents. | Requires pollinating agents. |
| Occurs in legumes peanuts and sunflower | Common in most of flowers like rose, China rose, etc |
5.
The main differences between asexual and sexual reproduction are
| Asexual reproduction | Sexual reproduction |
| Only one parent is needed | Two parents a male and a female are required. |
| Offsprings are genetically identical to their parents. | Offsprings exhibit variation with respect to their parents. |
| No seed is formed. Fragmentation, budding, spore formation, vegetative propagation are its different types | Seeds are formed due to fusion of male and female gametes. |
| Spirogyra, yeast, moulds and potato exhibit asexual reproduction | Fruit-bearing plants like mango and China rose, reproduce sexually. |
6.
Sexual reproduction is a process of formation of new individuals by involving two parents or gamete formation. In sexually reproducing plants, new plants are produced from seeds.
In this method, gametes fuses to form zygote that gives rise to new individual.
7.
(a)
Ovules
8.
(b)
grafting
9.
(a)
Wheat
10.
(d)
fertilisation
11.
(a)
(i) and (iii)
12.
(c)
one to many ovules
13.
(b)
(i), (ii) and (iii)
14.
(c)
Fragmentation
15.
(a)
winged seeds
16.
Mature ovary forms the fruit.
17.
Asexually by vegetative propagation.
18.
Ovary is the part where male and female gametes fuse together.
19.
Pollen grains.
20.
Sweet potato and dahlia develop new plants through their roots by the process of vegetative reproduction.
21.
Flowers are so colourful because they absorb and reflect light energy. Fragrance results from production of volatile chemicals which evaporate.
22.
Fungus, moss and fern reproduce by the common method of spore formation which is a type of asexual reproduction.
23.
When the reproduction in an organism includes two types of gametes, i.e male and female from two different parents, it is called sexual reproduction, The sexual reproduction takes place by the fusion of male and female gametes by the process called fertilisation to form zygote.
.png)
Sexual reproduction (fertilisation) in plants The different steps that take place during sexual reproduction in plants are
(i) The pollens are deposited on stigma and begin to germinate.
(ii) Pollen tube containing male gametes reaches to the ovary of flower.
(iii) The tip of the pollen tubes gets dissolved and male gametes comes out of the pollen tube.
(iv) Inside the ovary male gametes fuse with the female gamete or egg present in the ovule.
(v) The fusion of both the gametes will result into a fertilised egg cell which is also called as zygote.
24.
The various parts of a flower whose functions are mentioned above are labelled as follows:
.png)
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