Germination

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Germination

• General Biology
• Lecture Notes

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What are the parts of a seed?

• Testa (Seed Coat)
• Cotyledon (Seed Leaf)
• Radicle (Root)
• Plumule (Shoot)

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Observe a Halved Peanut

• 1) Draw your peanut
• 2) Label the following parts
• Testa
• Cotyledon
• Radicle
• Plumule

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What does a seed need to grow?

• 1) Warmth
• 2) Water
• 3) Oxygen

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Germination

• Early growth stage of the plant embryo

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What are the steps of germination?

• 1) Seed absorbs water oxygen

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Steps of Germination

• 2) Endosperm swells
• Cracks open seed coat
• What is endosperm?
• Food-rich tissue that nourishes a seedling as it
  grows!

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Steps of Germination

• 3) Young root emerges through cracked seed coat

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Steps of Germination

• 4) Shoot begin to grow
• Leaves Stem

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Problems That May Occur

• 1) Over watering
• Not enough oxygen

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Problems That May Occur

• 2) Seed too deep
• Lose stored energy before surfacing

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Problems That May Occur

• 3) Dry Conditions
• Not enough water to continue germination process