B2 2 Organisms in the environemnt

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  • Created by: jkav
  • Created on: 17-04-14 12:16
Name the solution used to test a leaf for starch.
Iodine solution
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What is the result of the iodine test for starch?
The regions containing starch will turn blue - black. Regions without starch will look yellowy - brown.
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What is the word equation for photosynthesis?
carbon dioxide + water + light energy = glucose + oxygen
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Give three physical factors which affect the distribution of plants
Three of: temperature, availability of nutrients, water, oxygen, carbon dioxide, amount of water
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Why would there be little point in heating a green house on a summer's day?
It will be hot enough anyway, so it would be a waste of energy. The rate of photosynthesis may stop if the temperature becomes too high.
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What is meant by the term 'limiting factors' in photosynthesis?
Factors, such as light, temperature and carbon dioxide, which might prevent the rate of photosynthesis increasing above a certain point.
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How can you use a quadrat to make a line transect?
A line is marked between two points and then the quadrat is placed at regular intervals along the line. The organisms in the quadrat are counted
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Other cards in this set

Card 2

Front

What is the result of the iodine test for starch?

Back

The regions containing starch will turn blue - black. Regions without starch will look yellowy - brown.

Card 3

Front

What is the word equation for photosynthesis?

Back

Preview of the front of card 3

Card 4

Front

Give three physical factors which affect the distribution of plants

Back

Preview of the front of card 4

Card 5

Front

Why would there be little point in heating a green house on a summer's day?

Back

Preview of the front of card 5
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