The experiment investigates the effect of light intensity on the rate of photosynthesis using pondweed and a lamp. What is a suitable method to ensure that heat from the lamp does not affect the results?
2Based on the provided results, what is the relationship between the distance of the lamp from the pondweed and the number of bubbles released per minute, within the range of 15 cm to 50 cm?
3At a distance of 10 cm, the number of bubbles per minute was 84. At 15 cm, it was also 84. What does this suggest about light intensity between these two distances?
4The question states that at distances between 15 cm and 50 cm, light intensity was a limiting factor. What evidence from the table supports this statement?
5If the distance between the lamp and the pondweed was kept at 10 cm, what other factor, besides light intensity, could have limited the rate of photosynthesis?
6Figure 2 shows a cross-section of a plant leaf. Which tissue is primarily responsible for absorbing light energy for photosynthesis due to its high concentration of chloroplasts?
7Which part of the leaf shown in Figure 2 is responsible for controlling the rate of gas exchange (carbon dioxide intake and oxygen release)?
8The epidermis in a leaf typically lacks chloroplasts. What is its main function?
9Describe the role of the spongy mesophyll tissue in photosynthesis, considering its structure.
10The palisade mesophyll cells are located at the top of the leaf. Explain how their structure is adapted for photosynthesis.
