Science - Chapter 7.2-7.3

How do you test the presence of starch on a leaf?

Destarch it by placing it in the dark for at least 48 hours.

What happens when iodine solution comes in contact with a variegated leaf?

The green parts will become dark blue, while the non-green parts will be brown in colour.

What is the usage of soda lime in the experiment for testing the whether carbon dioxide is necessary for photosynthesis?

it is to absorb carbon dioxide

What are the necessary factors for photosynthesis?

chlorophyll, light, carbon dioxide, water

What are the two significance of photosynthesis?

providing food for living things, maintaining the balance of oxygen and carbon dioxide in Nature

What are plants called in a food chain?

producers

What are animals that feed on plants called in a food chain?

consumers

Fill in the blanks: a food chain shows the \_______________________ \_________________________________ and the \_______________________________________ among living things?

feeding relationship, flow of energy

What energy is stored in food?

chemical energy