class 5th science

1. Miss Leela
TGT SCIENCE
Aadharshila Public School
Reproduction in plants
class 5

2. Contents
Importance of plants
Reproduction
Methods of reproduction in plants
Germination of seeds
Parts of a seed
Dicotyledonous and monocotyledonous seeds
Dispersal of seeds
Agriculture and crops

3. Importance of plants

4. REPRODUCTION
Process by which new plants are grown from the
parent plant.
E.g. from mango seeds, mango trees are grown.
There are different methods used by plants for
reproduction-

5.  1. with the help of seeds.
 2 with the help of stem cuttings- e.g. rose

6.  3 reproduction from stem-e.g. ginger, potato

7. By layering . E.g.
jasmine plant

8.  4 Reproduction from leaves-

9.  5 reproduction from spores- e.g. ferns and
mushrooms.

10. 6. Reproduction by roots- e.g. sweet potato

11. Germination of seeds-
The growth of a baby plant or a seedling from seed is
called germination.

12. Parts of a seed-
1. Seed coat
2. Scar
3. Seed leaves or cotyledons
4. Baby plant

13. Depending on no. of cotyledons seeds are of two
types-
1. Monocotyledonous seed- e.g. rice, wheat, maize
2. Dicotyledonous seed- pea, bean, mango

14. Dispersal of seeds-
The process of spreading seeds to different places is
called dispersal of seeds.
Agents of dispersal-
1. wind- such seeds have wing or hair like structures.
E.g. madar

15. 2. Dispersal by water-
Such seeds easily float on water.eg. Coconut
3. Dispersal by animals- such seeds have hooks or
spines to stick with the body of animals.
4. Dispersal by explosion –
Such seeds disperse by explosion of fruits. Eg. poppy

16. Agriculture- growing of crops on large scale for food or
other purpose.
Crops- plants of a particular kind grown in a particular
region
How to get high- yield from crops-
1. Prepare the soil properly.
2. Use healthy and ripe seeds for sowing.
3. Add manure and fertilisers
4. Irrigate the soil well.
How are crops protected-
1. Use of insecticides and pesticides
2. Use of fungicides
3. Grazing animals can be kept away by proper
fencing.
4. Store the grains in water-proof , insect-proof,
airtight containers.