Introduction: Seeds are important source of food . All the grains that we eat are seeds.
Importance : Seeds Produce new plants
Condition for seed germination
Seeds should get right amount of
1. Water
2. Air
3.warmth
Structure of Seed
Main parts are:
i) Sead coat protects the seed
ii) Cotyledons: store for for the baby plant inside
iii) Plumule: shoot of a young plant
iv) Radicle: root of a young plant inside the seed
Types of Seed:
i) Monocot: having one seed leaf
ii) Dicot: having two seed leaves
Importance of seed dispersal:
If plants grow too closely together, they have to compete for light , water and nutrients. Seed dispersal allows plants to spread out.
Seed dispersal:
i) dispersal by wind
iv) dispersal by explosion
ii) dispersal by water
iv) dispersal by animals.
