P6 Science - 01 - Energy in Food - 1 (Quiz)

The process whereby plants makes food is called ___________.

Answer explanation

The process whereby plants make food using sunlight, carbon dioxide, and water is called photosynthesis. This process converts light energy into chemical energy, producing glucose and oxygen.

Which form of energy do plants absorb for photosynthesis?

• heat

• light

• sound

• electrical

Answer explanation

Plants absorb light energy from the sun for photosynthesis. This light energy is converted into chemical energy, allowing plants to produce glucose and oxygen, which are essential for their growth and survival.

Which gas is taken in by the plant for photosynthesis to take place?

• oxygen

• nitrogen

• water vapour

• carbon dioxide

Answer explanation

Plants take in carbon dioxide from the atmosphere for photosynthesis. This gas is essential for converting light energy into chemical energy, allowing plants to produce glucose and oxygen.

During photosynthesis, water plants produce tiny bubbles which contain _________.

Answer explanation

During photosynthesis, water plants release oxygen as a byproduct. The tiny bubbles produced contain this oxygen, which is essential for the survival of aerobic organisms.

During photosynthesis, which substances do plants make?

• sugar

• starch

• oxygen

• water

• carbon dioxide

Answer explanation

During photosynthesis, plants convert carbon dioxide and water into sugar and oxygen using sunlight. Thus, the correct substances made are sugar and oxygen.

What happens to the extra sugar made by plants?

• It is thrown away

• It is stored as starch

• It is changed to water

• It is removed from the plant body.

Answer explanation

Plants convert excess sugar into starch for storage. This process allows them to store energy for later use, especially during periods when photosynthesis is not occurring.

___________ solution is used to test if starch is present.

Answer explanation

Iodine solution is used to test for the presence of starch. When iodine comes into contact with starch, it forms a blue-black complex, indicating that starch is present.

Which of the following ways will allow the water plant to photosynthesise faster?

[Hint: there is more than one way]

• Increase the distance between the light source and the plant

• Add more light sources

• Introduce water animals to the plant's habitat

• Add baking soda

Answer explanation

Adding more light sources increases light availability for photosynthesis. Introducing water animals can enhance nutrient cycling, benefiting plant growth. Baking soda provides carbon dioxide, a key component for photosynthesis.

The green substance in the leaves that absorb is light is ______________.

Answer explanation

The green substance in leaves that absorbs light is called chlorophyll. It plays a crucial role in photosynthesis by capturing light energy.

Eventually, all sources of energy in our food can be traced back to the _______.

Answer explanation

Eventually, all sources of energy in our food can be traced back to the sun, as it is the primary source of energy for photosynthesis, which produces the plants that form the basis of our food chain.