B8.4 - Making Te Most Of Photosynthesis (Finished)

Question 1

What are greenhouses used for?

Answer 1

Greenhouses are used to artificially create the ideal environment for plants to grow

Question 2

How is temperature prevented from becoming the limiting factor for photosynthesis by a greenhouse?

Answer 2

Greenhouses help trap the Sun’s heat to make sure that the temperature does not become the limiting factor. In the winter a gardener may use a heater to keep temperatures at an ideal level and in summer shades and ventilation to cool it down

Question 3

How do commercial farmers avoid light from becoming the limiting factor for photosynthesis?

Answer 3

Commercila farmers often supply artificial light after the sun goes down in a greenhouse to give plants more photosynthesis time

Question 4

Why are paraffin heaters sometimes used by farmers in greenhouses?

Answer 4

When paraffin burns it makes carbon dioxide as a by-product increasing the levels of carbon dioxide

Question 5

Appart from regulating light, temperature and carbon dioxide levels what else can greenhouse owners do to improve plant productiveness?

Answer 5

Keeping plants in a greenhouse keeps them away from pests and disease. Fertilisers can also be added to soil to provide minerals needed for healthy growth

Question 6

What is the benefit of a greenhouse?

Answer 6

Greenhouses with just right conditions for photosynthesis will allow plants to grow much faster and a decent crop can be harvested more often making more profit

Question 7

How can the drawback of cost of a greenhouse be improved?

Answer 7

A farmer should supply just the right amount of heat,light, etc to make the plants grow well but not more than they need to reduce wasting money

Question 8

How are graphs showing more than one limiting factor of photosynthesis used by greenhouse owners?

Answer 8

These types of graph can show how the rate of photosynthesis varies with only one factor changing so an optimum improvement can be found