B4 - It's a Green World

B4 Module.

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Leaf Structure

How do these factors make leaves adapted to photosynthesis?

1. Broad
2. Thin
3. Contain air spaces
4. Contain chlorophyll
5. Upper Epidermis
6. Stomata

7. Viens

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Leaf Structure

1. Broad -Large SA exposed to light.
2. Thin -Carbon dioxide and water travel short distance to get to chlorophyll.
3. Contain air spaces -Allows carbon dioxide and oxygen to move easily through cells. Large SA for gas exchange.
4. Contain chlorophyll -Found in chloroplasts in palisade layer, get the most light there.
5. Upper Epidermis -Transparent, light can easily get through to palisade layer.
6. Stomata - Let carbon dioxide and oxygen in and out. Water escapes.
7. Viens - Deliver water in and nutrients (glucose) out, help support structure.

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What is the definition of diffusion?

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Diffusion is the passive movement of particles from an area of HIGHER concentration to an area of LOWER concentration

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What does photosynthesis use up and produce?

What does respiration use up and produce?

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Photosynthesis uses up CARBON DIOXIDE and produces OXYGEN

Respiration uses up OXYGEN and produces CARBON DIOXIDE

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What is the definition of osmosis?

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Osmosis is the movement of water across a semi permeable membrane from a region of HIGHER concentration to a region of LOWER concentration.


The movement of water from a DILUTE to a more CONCENTRATED solution through a partially permeable membrane

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Porsha Richardson

Is this everything for B4 or only a small part of it?

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