How is the process of pollination different from fertilization? - Science

Short Note

How is the process of pollination different from fertilization?



Pollination is the process of transfer of pollens from anther to stigma. It occurs with the help of certain pollinators such as air, water, birds, or some insects.
Fertilization is the fusion of the male and female gametes. It occurs inside the ovule and leads to the formation of a zygote.

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Chapter 8: How do Organisms Reproduce? - Intext Questions [Page 140]


NCERT Science Class 10
Chapter 8 How do Organisms Reproduce?
Intext Questions | Q 1 | Page 140

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Match the following:

Column A Column B
(i) Stigma (a) Neuron
(ii) Pepsin (b) Carpel
(iii) Dendrites (c) Protein
(d) Stamen


Name the parts A, B and C shown in the diagram and write their functions.

Answer the following question.

What is pollination? Explain the different types of pollination.

Answer the following question.
State significance of pollination.

State the function of flowers in the flowering plants.

Fill in the blanks:

A flower may have either male or female reproductive parts. Such a flower is called _________.

Fill in the blank:

The transfer of pollen grains from the anther to the stigma of the same or of another flower of the same kind is known as _________.

Fill in the blanks:

The fusion of male and female gametes is termed as __________

Explain what you understand by sexual reproduction.

State the main difference between asexual and sexual reproduction.

Sketch the reproductive parts of a flower.

How does the process of fertilisation take place in flowers?

Tick (√ ) the correct answer:

The reproductive part of a plant is the

Tick (√ ) the correct answer:

Mature ovary forms the

State the name of the functional unit concerned with sexual reproduction.

Name the part made up of the stigma, style and ovary.

Name the swollen lower part of the carpel.

Name the male part of the flower.

Where are the pollen grains produced?

Where is the female gamete formed  in flowering plants?

Fill in the following blank with suitable word :

The female organ of reproduction in the flower is the...........

 Draw a neat sketch of the stamen of a flower. Mark in it filament and anther.

What is made in ovary of a flower?

What is meant by 'unisexual flowers' and 'bisexual flowers'? Give two examples of each.

Describe the process of fertilisation in a flower with the help of labelled diagrams.

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 flower possessing only stamens cannot produce fruits

(a) (i) and (iv)
(b) (ii), (iii) and (iv)
(c) (ii) and (iii)
(d) (i), (iii) and (iv)

Put a tick mark (✓) against the correct alternative in the following statement

Pollen is produced in the:

Fill in the blank by selecting suitable word:

A flower bearing only male or female parts is known as __________ flower.

Fill in the blanks:

A stamen consists of ______ and ________.

Fill in the blank:

Seeds are formed from________.

State whether the following statement is true (T) or false (F):

Flowers which possess stamens and carpel are called unisexual.

Find the odd-one out, giving reason:

Anther, pollen grain, ovule male gamete

Mention the function of Flower.

Mention the function of Anther.

Mention the function of Stigma.

(a) Identify A, B and C in the given diagram and write their functions.

(b) Mention the role of gamete and zygote in sexually reproducing organisms.

Sketch the labeled diagram: 

Flower with its sexual reproductive organs 

Explain sexual reproduction in plants. 

Prepare a slogan for campaign against female foeticide.

Fill in the blank by selecting suitable word:

Transfer of pollen grains from the anther to the stigma is known as______________. 

Fill in the blanks and rewrite the completed statements:

Lymph flows in _______________ direction. 

What is pollination? Mention its types.

What is cleistogamy? Write one advantage and one disadvantage of it, to the plant.

What is meant by pollination?

Answer the following question.
List two agents of pollination?

Find the odd one out:

Pollen grains are formed by _________ division in locules of anthers.

__________ is present in unisexual flower.

Calyx : Sepals : : Corolla : ________________

Bisexual : Hibiscus : : Unisexual : ___________

Pollen grains from anther are transferred to the stigma.

Give scientific reason.

Flower is a structural unit of sexual reproduction in plants.

Distinguish between self-pollination and cross-pollination.

Draw a neat and labelled diagram.

Double fertilization in angiosperms

Observe the figure below. Write functions of the labelled parts.

The male reproductive part of a flower is ______.

Match the following

1. Petal Opuntia
2. Fern Chrysanthemum
3. Phylloclade Attracts insect
4. Hooks Spore
5. Sucker Bignonia

The essential parts of a flower are ______.

Identify the parts A, B, C, and D?

Write the events involved in the sexual reproduction of a flowering plant.

Discuss the first event and write the types.

Write the events involved in the sexual reproduction of a flowering plant.

a. Discuss the first event and write the types.

b. Mention the advantages and the disadvantages of that event.

In which part of the flower germination of pollen grains takes place?

Where does the endothecium layer of anther lobes is present?

The anther wall consists of four wall layers where ______

In which of the following manner the arrangement of megaspores in a tetrad is observed in angiosperms?

Which of the following are the chemical components of the wall of pollen tube?

Antipodal cells are present towards the ______ in an anatropous ovule.

Which of the following is the outermost protective layer of anther?

Generally, in a pollen tube, which of the following moves to the tip of the tube?

Which type of development is observed in male gametophytes of plants?

Identify the female gametophyte in angiosperms.

What would be the number of chromosomes of the aleurone cells of a plant with 42 chromosomes in its roots tip cells?

Gloriosa superba exhibits ______.

Sperm and egg nuclei fuse due to ______.

Flowers showing ornithophily show few characteristic like ______.

In a flowering plant, archesporium gives rise to ______.

Pineapple fruit develops from ______.

What would be the number of chromosomes in the cells of the aleurone layer in a plant species with 8 chromosomes in its synergids?

Conidia are formed endogenously while zoospores are formed endogenously.

Complete the table

Carly x  ______  ______
 ______ petal attract insects
Androecium  ______ Male reproductive part
 ______ ______ Female reproductive part.

The ovaries of different flowers may contain

Double fertilization is exhibited by ______

Double fertilization is essential for formation of ______.

Double fertilization means ______.

In a plant flower the female whorl is ______.

What are the agents for pollination?

The figure below shows the concept of double fertilization. Complete the flow chart showing the progress at each step:

The pollen tube usually enters the embryo sac ______.

  • Assertion: Primary endosperm nucleus is diploid.
  • Reason: It is the product of double fertilisation.


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