AGR1050-ABED_1: Section 4 Think About It! | MoodleHUB 🎓

Glossary

Self - Check Questions

Test your knowledge of the contents of Section 4 by thinking about whether these statements are true or false.

For each false statement, think of a correction to make it true.

1. Photosynthesis is the process that uses oxygen and water to produce carbohydrates and carbon dioxide.

False. Photosynthesis uses carbon dioxide and water to produce carbohydrates and oxygen.

2. Photosynthesis happens in green plants only.

True. Photosynthesis happens in green plants only, because it requires chlorophyll.

3. Glucose is manufactured, by the plant, through the process of respiration.

False. Glucose is manufactured by the plant through the process of photosynthesis. Respiration is the process that burns the glucose.

4. The rate of photosynthesis depends on the temperature of a plant's environment.

True. Temperatures that are either too cold or too hot can actually bring photosynthesis to a halt.

5. The by-products of respiration are oxygen and water vapour.

False. The by-products of respiration are carbon dioxide and water vapour.

6. Approximately 10% of the water absorbed by a plant's root system is used to make food.

True. About 10% is used to make food; the other 90% of the water is transpired through the stomata of the leaves.

7. Turgor pressure, within the cells of a plant, is maintained by the presence of carbon dioxide.

False. Turgor pressure within the cells of a plant is maintained by the presence of water.