Write true or false. Correct the false statements. 1. Green plants make their own food by the process of photosynthesis. 2. The glucose produced during photosynthesis is transported from the leaves to other parts of the plant. 3. Oxygen is released as an end product during photosynthesis. 4. Stomata are present mostly on the lower surface of leaves and on green stems. 5. The rate of photosynthesis increases with an increase in the concentration of carbon dioxide
The Correct Answer and Explanation is:
Here are the statements with corrections and explanations:
- True
Green plants make their own food by the process of photosynthesis. This process takes place mainly in the chloroplasts of plant cells, using sunlight, carbon dioxide, and water to produce glucose and oxygen. - True
The glucose produced during photosynthesis is transported from the leaves to other parts of the plant. This glucose is transported through the plant’s vascular system, primarily the phloem, to areas where it is needed for growth or storage. - True
Oxygen is released as an end product during photosynthesis. During the light-dependent reactions of photosynthesis, water molecules are split, releasing oxygen as a byproduct. This oxygen is then expelled into the atmosphere. - True
Stomata are present mostly on the lower surface of leaves and on green stems. These tiny pores help regulate the exchange of gases (oxygen and carbon dioxide) and water vapor. The lower surface is preferred for stomata to reduce water loss due to evaporation while still allowing for gas exchange. - True
The rate of photosynthesis increases with an increase in the concentration of carbon dioxide. Carbon dioxide is one of the key reactants in photosynthesis, so increasing its availability often leads to an increased rate of photosynthesis, provided other factors (like light and temperature) are optimal.
Explanation:
Photosynthesis is the process by which green plants convert light energy, usually from the sun, into chemical energy stored in glucose. This is a vital process not only for plants but also for all life on Earth, as it produces oxygen and serves as the base of the food chain. The factors that affect the rate of photosynthesis include light intensity, carbon dioxide concentration, temperature, and the presence of water. Photosynthesis occurs in two stages: the light-dependent reactions and the Calvin cycle (light-independent reactions), which use the products of the former to synthesize glucose.
