Question

which of the following is something plants need from the air to perform photosynthesis? * 2 points
o oxygen
o carbon dioxide
o water
o sunlight

besides carbon dioxide, what else do plants need from their environment to carry out photosynthesis? * 2 points
o sugar and oxygen
o water and minerals
o sunlight and water
o soil and air

during photosynthesis, plants take in sunlight, water, and carbon dioxide. * 2 points what do they produce as food?
o protein
o sugar
o starch
o fat

when plants make their own food through photosynthesis, what gas is released into the air as a by - product? * 2 points
o oxygen
o carbon dioxide
o carbon monoxide
o nitrogen

Explanation:

1. In photosynthesis, plants use carbon - dioxide from the air. Oxygen is a by - product, water is from the soil and sunlight is an energy source.
2. Besides carbon dioxide, plants need sunlight for energy and water for various reactions in photosynthesis. Minerals are not directly involved in the main photosynthesis process.
3. During photosynthesis, plants produce sugar (glucose) which can be converted to starch for storage. Protein and fat are not the immediate food products of photosynthesis.
4. Oxygen is released as a by - product of photosynthesis when plants make their own food using sunlight, water and carbon dioxide.

Answer:

1. B. Carbon Dioxide
2. C. Sunlight and water
3. B. Sugar
4. A. Oxygen