B4 - It's a Green World

B4 Module.

HideShow resource information

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

1 of 8

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.

2 of 8


What is the definition of diffusion?

3 of 8


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

4 of 8


What does photosynthesis use up and produce?

What does respiration use up and produce?

5 of 8

Photosynthesis uses up CARBON DIOXIDE and produces OXYGEN

Respiration uses up OXYGEN and produces CARBON DIOXIDE

6 of 8


What is the definition of osmosis?

7 of 8

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

8 of 8


Porsha Richardson


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

Similar Biology resources:

See all Biology resources »See all Ecology and Environmental Science resources »