Structure of the Leaf

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  • Created by: DOMAR34
  • Created on: 02-03-15 21:42
What is the function of the upper epidermis?
Transparent to allow sunlight through to other layers.
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What is the function of the palisade layer
Cells towards the top of the leaf contain chloroplasts which allow maximum absorption of sunlight
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What is the function of the spongy mesophyll
Cells contain lots of air spaces which are connected to the stomata which allow optimum exchange of gases
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What is the function of the Lower Epidermis
Contain guard cells which regulate the opening and closing of the stomata.
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How is a leaf adapted for photosynthesis
Broad and flat to provide a huge surface area for absorption of light
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Give another adaptation for photosynthesis
Leaves contain chlorophyll which are inside millions of chloroplasts to allow absorption different parts of the spectrum.
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How does CO2 concentration affect the rate of photosynthesis?
The hgiher the concentration of CO2, the higher the rate of photosynthesis however CO2 limits the rate of photosynthesis. After a certain point the increase of CO2 has no further effect.
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How does temperature affect the rate of photosynthesis?
The higher the temperature, the higher the rate of photosynthesis however temperature limits the rate of photosynthesis. Once the temperature reaches 45(degrees) the enzymes which control photosynthesis will have been denatured.
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How does light intensity affect the rate of photosynthesis?
The higher the light intensity, the higher the rate of photosynthesis however light intensity limits the rate of photosynthesis. After a while the light intensity has no further affect on the rate of photosynthesis
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Why does a plant require mineral ions?
To be healthy and grow properly.
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Why does a plant require magnesium?
To create chlorophyll for photosynthesis.
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Why does a plant require nitrates?
To form amino acids that form proteins of cells growth.
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Describe an experiment to investigate photosynthesis, showing the evolution of oxygen from a water plant and the requirements of light.
PART 1 - You will need a pondweed, beaker, glass tube and a light for this experiment. Firstly, place the pondweed in a flask. Place the light facing the pondweed which will then produce bubbles of oxygen.
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Card 2

Front

What is the function of the palisade layer

Back

Cells towards the top of the leaf contain chloroplasts which allow maximum absorption of sunlight

Card 3

Front

What is the function of the spongy mesophyll

Back

Preview of the front of card 3

Card 4

Front

What is the function of the Lower Epidermis

Back

Preview of the front of card 4

Card 5

Front

How is a leaf adapted for photosynthesis

Back

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