Researchers from the School of Biological Sciences of Southwest University studied the effect of soil water content on photosynthesis of a vegetable variety A and B. Please answer according to the analysis. ( 1) (1) According to the analysis of figure 1, the effect of soil water content on photosynthesis rate is (basically) the same as that of vegetable varieties A and B. When the soil water content is more than 70%, the soil water content will not be a factor limiting the photosynthesis of vegetables.

(2) The light reaction site is the thylakoid membrane of chloroplast, so the lack of water leads to the destruction of chloroplast thylakoid structure, which directly affects the light reaction and cannot be recovered.

(3) Tomato seedlings cultured under low soil water content were divided into two groups. Tomato seedlings in the experimental group were treated with normal water supply (watering and replenishing water), while the control group remained intact. If the photosynthetic rate of tomato seedlings in the experimental group can not be restored (improved), the above viewpoint is established.

So the answer is:

(1) (basic) same? Bigger than ...

(2) light

(3) Normal water supply (watering and replenishing water)? Can't recover (can't improve)