SHERWOOD HIGH
REVISION WORKSHEET
Subject: Biology Grade: IX
Chapter: Pollination and Fertilisation
a) Name the following:
1. The pollination between the flowers of different plants of the same species.
2. The condition in which the anthers of the flowers mature first.
3. The removal of anthers in young flowers for artificial pollination.
4. The outer wall of a mature pollen grain.
5. The small opening present in the integument of the ovule.
b) Choose the odd one out and mention the category to which the other three belongs to:
1. Herkogamy, Autogamy, Heterostyly, dichogamy.
2. Intine, Exine, Generative nucleus, Micropyle.
3. Egg cell, Synergids, tube nucleus, Antipodal cell.
c) Choose the correct option:
1. Assertion: The stamens of anemophilous flowers are long and hang out to be exposed to
wind.
Reason: The stamens hang out so that the pollen grains can be carried out in wind.
a. Both A and R are False.
b. A is true and Bis false.
c. Both A and R are true.
d. A is false and Ris true.
2. The __________- flowers are brightly coloured to attract insects.
a. Anemophilous b. Entomophilous c. Elephophilous d. Hydrophilous
3. ___________ is the union of the nuclei of male and female gametes.
a. Pollination b. Placentation c. Fertilization d. Emasculation.
d) Give reasons for the following:
1. The fertilization in angiosperms is termed as double fertilization and triple fusion.
Explain.
2. Water current helps in pollinating Vallisneria.
3. Chasmogamous flowers mainly undergoes cross pollination. Justify.
e) Define the following:
1. Cleistogamous flowers 2. Elephophily 3. Heterostyly.
f) Draw a neat labelled diagram of the following:
1. Pollen grains germinating on stigma.
2. Ovule showing the embryo sac.
g) Identify the following diagram and answer the questions that follows:
a. label the parts.
b. Mention the function of part labelled 4.
c. Name the part labelled 1 and state the function of the same.
