Question

1. stewart is investigating the responses of plants to their environment. as part of the investigation, he studies a plant that receives sufficient water and has straight, upright stems and firm leaves. he also studies another plant that was grown in dry soil and that has wilted stems and leaves. when stewart examines the cells of the plants under a microscope, which organelle will display the greatest difference between the two plants? a. the nucleus, because chromosomes thicken in water b. the cell membrane, because water diffuses across it c. chloroplasts, because photosynthesis depends on water volume d. the central vacuole, because it stores water and provides support 10. a team of science researchers is trying to decide which type of microscope to purchase

Explanation:

The question is about identifying the organelle that shows the greatest difference between two plants with different water - availability conditions. The central vacuole stores water and provides turgor pressure which affects the plant's structure. In a water - efficient plant in dry soil, the central vacuole's state will differ from that in a plant with more water. Chloroplasts are related to photosynthesis, the cell membrane to diffusion, and the nucleus to genetic material and not as directly related to the plant's water - related structural differences in this context.

Answer:

d. the central vacuole, because it stores water and provides support