One bean plant is illuminated with green light and another bean plant similar in all respects (size and leaf area etc.) is illuminated with blue light. In which plant will the rate of photosynthesis be higher and in which will it be lower, if all other conditions are identical? Give reasons.
Name the phenomenon by which the water rises in the xylem vessels in small sized plants. Explain the cohesion theory of ascent of water in tall tree.
Explain the mechanism of photorespiration. Name the cell organelles involved in the process.
What is the law of limiting factors? How would the rate of photosynthesis be affected if the soil water becomes limiting? Explain.
Explain the mechanism of closing and opening of stomata. Name the category of plants which keep their stomata open during the night and closed during the day.
Explain the mechanism of C4 photosynthetic carbon cycle. Name any two plants where it occurs. Mention the difference in the structure of chloroplasts in the mesophyll cells and bundle sheath cells in such plants.
What would happen to the rate of photosynthesis in C3 plants if the CO2 concentration level almost doubles from its present level in the atmosphere?
Explain the process of biosynthetic phase of photosynthesis occurring in the chloroplast.
Describe the process of development of root nodules in a leguminous plant. Name the oxygen scavenger molecule present in the root nodules.
When and why does photo-respiration take place in plants? How does this process result in a loss to the plant?