B4 - Leaves and Photosynthesis

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How are the outer epidermis adapted for efficient photosynthesis?
Lacks chloroplasts and so is transparent; there are no barriers to the entry of light
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How are the upper palisade adapted for efficient photosynthesis?
Contains most of the leaf's chloroplasts, as they will receive most of the light
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How are the spongy mesophyll cells adapted for efficient photosynthesis?
They are loosely spaced so that diffusion of gases between cells and the outside atmosphere can take place.
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How are the arrangement of mesophyll cells adapted for efficient photosynthesis?
Create a large surface area/volume ratio so that large amounts of gases can enter and exit the cells.
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What appearance are leaves adapted to so that photosynthesis is efficient
Usually broad so that they have a large surface area to get as much light as possible. Usually thin so that gases can diffuse through easily and light can get to all cells
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What do leaves contain so that photosynthesis is more efficient?
Chlorophyll and other pigments so that they can use light from a broad range of the light spectrum
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What do leaves have, that they have adapted to, to make photosynthesis more efficient?
Network of vascular bundles(veins) for support and transport of chemicals such as water and glucose. Specialised guard cells which control the opening and closing of stomata therefore regulating the flow of CO2 and O as well as water loss
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What does having many pigments in leaves do?
By having many pigments, the plant cells can maximise the use of the sun's energy. Each pigment absorbs light of different wavelengths.
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Card 2

Front

How are the upper palisade adapted for efficient photosynthesis?

Back

Contains most of the leaf's chloroplasts, as they will receive most of the light

Card 3

Front

How are the spongy mesophyll cells adapted for efficient photosynthesis?

Back

Preview of the front of card 3

Card 4

Front

How are the arrangement of mesophyll cells adapted for efficient photosynthesis?

Back

Preview of the front of card 4

Card 5

Front

What appearance are leaves adapted to so that photosynthesis is efficient

Back

Preview of the front of card 5
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