Organisms in the environment

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  • Created by: Sam Evans
  • Created on: 31-12-14 17:15
Name the solution used to test a leaf for starch
Iodine solution
1 of 10
What is the result of the iodine test for starch?
The starchier areas will turn blue-black and the less starchy areas will turn yellowy brown
2 of 10
What is the word equation for photosynthesis?
carbon dioxide + water --> glucose + oxygen
3 of 10
Give three physical factors which affect the distribution of plants.
temperature, water and oxygen
4 of 10
Why would there be little point in heating a greenhouse on a summer's day?
It will be a waste of energy as it will be hot anyway. The rate of photosynthesis may stop as it will be too hot
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What is meant by the term 'limiting factor' in photosynthesis?
Factors such as light, temperature and carbon dioxide which may 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 point and then the quadrat is placed at regular intervals along along the line. The organisms in the quadrat are counted.
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What is the difference between a mean and a median?
The mean is the total of all number divided by the amount of numbers and the median is the middle number
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Why is it difficult to be sure an investigation in outdoor habitats is valid?
There are so many variables which are difficult to control
9 of 10
What is meant by 'reproducible' results?
A reproducible result is a result that is the same if someone repeats the experiment.
10 of 10

Other cards in this set

Card 2

Front

What is the result of the iodine test for starch?

Back

The starchier areas will turn blue-black and the less starchy areas will turn 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 greenhouse on a summer's day?

Back

Preview of the front of card 5
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