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Bioenergetics

Ideal conditions for photosynthesis - Higher

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Bioenergetics

Photosynthesis and limiting factors

How plants use glucose from photosynthesis

Factors limiting the rate of photosynthesis - Higher

Ideal conditions for photosynthesis - Higher

Aerobic and anaerobic respiration

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Explainer Video

Tutor: Holly

Summary

Ideal conditions for photosynthesis

In a nutshell

Greenhouses can allow farmers and gardeners to create the ideal environment for their plants. This can maximise plant growth and quality as they can ensure there are no limiting factors on photosynthesis and they can reduce the number of pests. However, greenhouses are expensive so the farmers must make sure they don't use too much heat, as this would be wasting money.

Greenhouses

Greenhouses allow you to artificially create an ideal environment for plants to grow well.

Feature	Description
Heaters	Greenhouses trap heat which ensures that temperature is not a limiting factor. At colder times, a heater could be put in the greenhouse and the temperature can be regulated easily.
Lights	Greenhouses can also have lights which can maximise the amount of light that plants receive for photosynthesis. During the winter months when the days are shorter, lights can be turned on to artificially increase the day length.
Paraffin heaters	Paraffin heaters can be used in greenhouses to both increase the temperature and carbon dioxide levels. These heaters burn paraffin to generate heat. Carbon dioxide is produced as a by-product.
Containment	Greenhouses also keep plants in one area and closed off from the environment so there is less chance of disease and pests.
Fertilisers	To encourage plant growth, fertilisers can also be added to the soil.

Costs

Whilst greenhouses clearly benefit plant growth, it is much more expensive to grow plants in greenhouses than in their natural environment. If the conditions are kept just right, then the quality of the plants to be sold will be better. The farmer must balance the costs of the greenhouse with the money they make from selling their plants.

Learn with Basics

Length:

Unit 1

Photosynthesis and plant adaptations

Unit 2

Photosynthesis and limiting factors

Jump Ahead

Unit 3