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What are needed for photosynthesis to take place?
Carbon dioxide, water and light
What are produced from photosynthesis?
sugar and oxygen
What is the relationship between the amount of light and the rate of photosynthesis?
the greater the amount of light, the higher the rate of photosynthesis
What is the relationship between the amount of carbon dioxide and the rate of photosynthesis?
the greater the amount of carbon dioxide, the higher the rate of photosynthesis
how is sugar different from starch?
excess sugar is stored as starch
What test do we use to test for the presence of starch?
iodine test
In the presence of starch, what is the colour of the iodine solution?
blue-black
In the absence of starch, what is the colour of the iodine solution?
yellow-brown
What is respiration?
Respiration is the release of energy from food.
Photosynthesis happens in the day. This statement is wrong. Why?
Photosynthesis happens in the presence of light.
Respiration occurs only in animals. This statement is wrong. Why?
Plants also respire.
What is the primary source of energy on Earth?
the Sun
