Every Child A SeedEvery Child A SeedLesson 2Lesson 2

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Parts of a SeedParts of a Seed

Seed coat

Cotyledon(seed leaf)

Radicle

Plumule

Protects the seed

Provides food for the seed

Grows to become the shoot

Grows to become roots

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Rearrange the pictures according to the correct stages of growth

A B C D E

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Rearrange the pictures according to the correct stages of growth

E B C D A

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The story of a seed...The story of a seed...

Seeds produced in the fruit are d_ _ _ersed when they mature. They remain inactive until conditions are right for growth and germination takes place.

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The story of a seed...The story of a seed...

Seeds produced in the fruit are dispersed when they mature. They remain inactive until conditions are right for growth and germination takes place.

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The process whereby a seed sprouts and grows into a s_ _dling is called germination.

What is Germination?

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The process whereby a seed sprouts and grows into a seedling is called germination.

What is Germination?

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Factors for Seed GerminationFactors for Seed Germination

1. OxygenLiving things need oxygen to survive.A seed needs oxygen to germinate.

Oxygen in found in spaces in the soil.

*Note that seedsshould not be buriedtoo deeply within thesoil for oxygen to beavailable.

Oxygen

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Factors for Seed GerminationFactors for Seed Germination

2. Water • Food stored in the seed leaves help the seed to

grow.• As the seed grows, water is needed to break the

seed coat.• The root helps to anchor the seed and absorb

minerals and water from the soil.• Give the optimum amount of water. (Too much water can cause the root to rot and too little water

limits the seed’s growth.)

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Factors for Seed GerminationFactors for Seed Germination

3. WarmthSeeds generally germinate within a t_ _ _ _ _ _ _ure range.

*Note that many seeds germinate at t_ _ _ _ _ _ _ures between 16 and 24 degree celsius.

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Factors for Seed GerminationFactors for Seed Germination

3. WarmthSeeds generally germinate within a temperature range.

*Note that many seeds germinate at temperatures between 16 and 24 degrees Celsius.