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You are studying photosynthesis and its overall function and purpose. You choose to use several aquatic plants of the same species and divide them into two tanks. One tank is under a low light regime and the other a high light regime. You grow them in these conditions for several weeks and make observations.
-After several weeks you notice that the plants in high light are larger (grew more)and there are more air bubbles in the tank than in the low light tank. The most logical conclusion is that
A)more air in the tank has helped the plants to grow.
B)the difference in light must have an influence on growth.
C)you didn't do the study properly and put larger plants in one tank.
D)something in the low light tank must be stopping growth.
E)you need to do more research to fully understand what could be happening.

Question

Quizplus · Accepted Answer

The observed difference in growth between the high light and low light tanks suggests that light has an influence on growth. This is a reasonable conclusion based on the experimental setup and observations made. A and D are not supported by the observations, and C is an unlikely explanation unless more information is provided. E may be true, but based on the information given, it is not the best choice.

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