B1.4.4 - Interaction Of Limiting Factors

Question 1

What is a way you can find out the rate of photosynthesis?

Answer 1

By using pondweed and checking how many oxygen bubbles are given off per minute.

Question 2

What we the three key factors which affect photosynthesis?

Answer 2

Temperature
Light intensity
Amount of carbon dioxide

Question 3

How can you change the amount of light intensity?

Answer 3

You can move the light away from the experiment

Question 4

How can you change the amount of carbon dioxide?

Answer 4

You can add extra carbon dioxide into the atmosphere.

Question 5

How can you change the temperature?

Answer 5

Simple heating or cooling

Question 6

What is the inverse square law equation used to find out?

Answer 6

Relative light intensity

Question 7

What is the inverse square law formula?

Answer 7

Relative light intensity =

1 / distance from from light source squared

Question 8

What is a limiting factor?

Answer 8

A factor that limits the rate of something

Question 9

What is the most common limiting factor for photosynthesis?

Answer 9

Carbon dioxide

Question 10

Why does a lack of carbon dioxide affect the rate of photosynthesis?

Answer 10

It does not matter if the light and temperature are high, because the carbon dioxide also needs to be on the same proportion of usage, and if it is not the rate of reaction will not increase when all the carbon dioxide is used up