Reproduction
Q I
Choose the correct answer
1. The reproductive part of a higher plant is the flower.
2. The process of fussion of male and female gametes is called
fertilization.
3. Mature ovary forms the fruit.
4. The reproductive part of Bryophyllum is leaf bud.
5. Potato is a root.
6. In ginger ,food is stored in its stem.
7. Reproduction by budding is found in yeast .
8. Pollen grains are formed in anther.
9. Reproduction by fragmentation is common in spirogyra.
10.Fruits develop from ovary.
11.Reproduction by spores is seen inbread mold.
Q II
1.
2.
3.
4.
5.
Q III
Fill in the blanks
The fussion of male and female gametes is termed fertilization.
Ovules contain female gametes.
Pollen grains contain male gametes.
After fertilization , an ovule becomes seeds.
Plants produce seeds as a result of sexual reproduction.
Answer the following
1. Define reproduction. Mention its importance .
AnsReproduction is the capacity of all organisms to produce young ones of
their own kind. It helps in the continuity of a species.
2. Draw he structure of the flower you have studied and name its parts.
3. Name the two methods of reproduction in higher plants.
AnsThe two methods of reproduction in higher plants are Sexual
reproduction and Asexual reproduction.
4. Define pollination.
Ans The process of transfer of pollen grains from the stamen (anther)
to the stigma of a flower is called pollination.
5. What are pollinators ? Name different pollinators.
Ans. The agents that pollinate flowers are called pollinators. Pollinators are
birds, insects, bats, even air and water.
6. Explain each of the following with an example.
a) Fission Fission means division . It generally occurs in singled celled
organisms. The parent cell divides into two daughter cells it is
termed binary fission, if more than two daughter cell it is termed as
multiple fission .
b) Fragmentation In this process, the parent body breaks into two or
more pieces and each pieces develops into a complete new organism.
c) Regeneration When some animals lose their body parts, they regrow the lost parts of their body and develop into complete animals.
d) Spore formation Ferns, mushrooms and molds reproduce from tiny
structure called spores, especially during unfavorable conditions.
e) Budding A bud is developed on parent body as an out growth The
bud grows into a complete organism. Fully formed bud separates
from the parent body.
f) Vegetative ReproductionIt involves production of young individuals
from plant parts such as stem , root and leaves.
7. Name two plants which usually reproduce without seeds.
Ans. Potato and ginger plants reproduce without seeds.
8. Distinguish between
Androecium
Androecium is male reproductive
reproductive
Gynoecium
Gynoecium is the female
Part.
Part.
2.
Self-pollination
Cross-pollination
The transfer of pollen grains
The transfer of pollen grains
from anther of
from anther of flower plant to
flower plant to stigma of
another flower of
to stigma of same flower or other
a different plant of the same
species.
any other flower of same plant.
3
Sexual reproduction Asexual reproduction
1. It involves two parent.
It involves a single parent.
2. Gametes are produced.
Gametes are not
produced.
3. Young ones produced show
Young ones produced are
identical to
characters of both the parents
their parents.
or they do not resemble their
parents completely.
Q IV
Match the following
A
1.
2.
3.
4.
5.
Budding
Yeast
Vegetative reproduction
Fragmentation
Spore formation
Regeneration
B
Bryophyllum
Spirogyra
fungi
sea star