The figure shows the L.S of ovary at the time of fertilisation. Label the parts A-J.

L.S of ovary. A. Pollen grain- Pollen grains are inside the pollen and give rise to the male gametophyte of a seed plant. B. Pollen tube- A pollen tube is a tubular structure produced by the male gametophyte of seed plants when it germinates. C. Male germ cell. D. Pollen tube- A pollen tube is a tubular structure produced by the male gametophyte of seed plants when it germinates. E. Male germ cell. F. Egg cell- Egg cells develop in ovules, tiny structures embedded in the ovary at the base of the pistil. G. Polar nuclei- Either of the two nuclei of a seed plant embryo sac that are destined to form endosperm. H. Antipodal cell- The three haploid cells in the mature embryo sac of flowering plants that are situated at the opposite end to the micropyle. I. Embryo sac- An oval structure within an ovule of an angiosperm that contains the egg. J. Synergids- One of two small, short-lived nuclei lying near the egg in the mature embryo sac of a flowering plant.

The figure shows the L.S of ovary at the time of fertilisation. What happens to the part F and G.

According to the diagram, F is Egg cell and G is Polar nuclei. One of the two sperm cells fertilizes the egg cell, forming a diploid zygote and the other sperm fuses with the two polar nuclei, forming a triploid cell that develops into the endosperm. Together, these two fertilization events in angiosperms are known as double fertilization.

E M B I B E

All In One ICSE Biology>Chapter 4 - Pollination and Fertilisation>Chapter exercise (Diagram based questions)>Q 22

EASY

9th ICSE

IMPORTANT

Earn 100

Look at the figure of pollination in pea below and answer the following questions.

Name the pollination type and agent seen in the figure.

Important Questions on Pollination and Fertilisation

EASY

9th ICSE

IMPORTANT

All In One ICSE Biology>Chapter 4 - Pollination and Fertilisation>Check point>Q 3

Name the plant bearing both male and female parts on same flower.

MEDIUM

9th ICSE

IMPORTANT

All In One ICSE Biology>Chapter 4 - Pollination and Fertilisation>Check point>Q 5

What is protandrous condition?

EASY

9th ICSE

IMPORTANT

All In One ICSE Biology>Chapter 4 - Pollination and Fertilisation>Check point>Q 1

Vallisneria is pollinated by _____(water/wind).

MEDIUM

9th ICSE

IMPORTANT

All In One ICSE Biology>Chapter 4 - Pollination and Fertilisation>Check point>Q 3

What are the scientific terms for pollination by wind and insects?

MEDIUM

9th ICSE

IMPORTANT

All In One ICSE Biology>Chapter 4 - Pollination and Fertilisation>Check point>Q 2

Name the structure through which the ovule is attached to the placenta. (Funicle/Isthmus)

MEDIUM

9th ICSE

IMPORTANT

All In One ICSE Biology>Chapter 4 - Pollination and Fertilisation>Chapter exercise (Diagram based questions)>Q 23

The figure shows the L.S of ovary at the time of fertilisation.

Question Image

Label the parts A-J.

EASY

9th ICSE

IMPORTANT

All In One ICSE Biology>Chapter 4 - Pollination and Fertilisation>Chapter exercise (Diagram based questions)

The figure shows the L.S of ovary at the time of fertilisation.

Question Image

What happens to the part F and G.

MEDIUM

9th ICSE

IMPORTANT

All In One ICSE Biology>Chapter 4 - Pollination and Fertilisation>Challengers (MCQ)>Q 2

A plant is fertilised by pollen grains from anther of another plant. Which of the following characteristics are expected to found in its flowers?
I. Anthers and stigma mature at same time.
II. Male and female flowers are borne on two separate plants.
III. Flowers always remain closed.
IV. Styles are long while anthers are short.