Garnock Academy Level 3 Science
Photosynthesis Homework 2
SCN 3-02 & 3-03a
Name _________________________________
Date to be returned __________________
1.
Teacher _______________________
Mark
________
Plants are important to humans in different ways. Many plants like rice, soya and
wheat are valuable sources of food. Other plants are important raw materials used
for making a range of useful products. Timber is used for building, flax is used to
produce cloth and sugar cane can be used to produce biofuel. Plants are also a
source of medicines. Antibiotics are produced by the penicillium fungus, heart
drugs have been extracted from foxgloves and the Rosy Periwinkle contains a drug
used to treat cancer.
Use the above information to complete the table below:
Raw materials
soya
Rosy Periwinkle
(4)
2.
How does cutting down large areas of trees affect the gases in the Earth’s
atmosphere?
(1)
3.
What do GREENHOUSE GASES in the Earth’s atmosphere do?
(1)
4.
What phrase is used to describe the effect that green house gases have on our
climate?
(1)
CfE Science Level 3: SCN 3-02a
Garnock Academy
4.
(3)
CfE Science Level 3: SCN 3-** & SCN 3-**
Garnock Academy