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Seeds and Growing Plants

Seeds and Growing Plants. Parts of a plant. Function of plant parts. Parts of a flower. What are seeds?. Parts of a seed – seed coat. Why do seeds have a seed coat?. Why do seeds have a seed coat?. Why are seeds so different?.

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Seeds and Growing Plants

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  1. Seeds and Growing Plants

  2. Parts of a plant

  3. Function of plant parts

  4. Parts of a flower

  5. What are seeds?

  6. Parts of a seed – seed coat • Why do seeds have a seed coat? Why do seeds have a seed coat?

  7. Why are seeds so different? Shape Size Colour Texture

  8. Seed coat texture • Cactus seed under a powerful microscope

  9. Parts of a seed – Inside the seed

  10. Parts of a seed First leaves Epicotyle = stem

  11. What do seeds need to GERMINATE? Oxygen - Growth Sun - Energy for PHOTOSYNTHESIS Temperature – Cold? Hot? Warm? Water - Photosynthesis and growth

  12. GERMINATION What is germination? Steps: • Seed coat breaks 2. Radicle becomes ROOT 3. Hypocotyl and epicotyl become the STEM 4. First leaves grow = PHOTOSYNTHESIS First leaves

  13. PARTS OF A SEED - INSIDE

  14. Plants need NUTRIENTS Carbon Hydrogen Oxygen Soil nutrients

  15. Soil nutrients Nitrogen – Growth, photosynthesis Phosphorus – photosynthesis, flowering Potassium – build proteins, prevent disease Calcium – Strong cells Magnesium – Photosynthesis Sulfur - build proteins and produce food

  16. Soil quality - pH pH=7

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