Organisms in the environment quiz

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1. Why is it hard to make an investigation that is outdoors valid?

  • There are too many variables which are difficult to control.
  • Your equipment could be damaged by weather.
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2. What is meant by the term limiting factor?

  • Something which stops photosynthesis from being affective.
  • Something which prevents the rate of photosynthesis increasing.
  • Something that stops a plant from growing.

3. What is the result of an iodine test for starch?

  • The leaf will turn black/blue
  • The leaf will turn white
  • The leaf will turn brown

4. How can you use a quadrat to make a transect?

  • A line is marked between two points and then the quadrat is placed at regular intervals along the line.
  • Place quadrats side by side to form a line across the area of study.

5. Which one of these is a physical factor that affects the distribution of a plant.

  • Competition.
  • Availability of water.
  • Predators.


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