Experimental design: Developing a hypothesis It is important to remember that be

Question

Experimental design: Developing a hypothesis It is important to remember that behind every hypothesis statement there are assumptions, knowledge, and theories. When developing their hypothesis, McCarthy and her colleagues started by considering the chemical equation for photosynthesis. As photosynthesis occurs, the reactants and energy on the left are used, generating the products on the right. A plant with access to more reactants can grow more than a plant with access to fewer reactants. Suppose you are able to manipulate a plant's access to components in the photosynthesis equation. Drag each label to the appropriate bin to predict how that action will affect plant growth. For each increase or decrease assume that every other component of the photosynthesis equation is unlimited.

Explanation / Answer

Decrease plant growth :

1. Decrease H2O

2. Decrease sunlight

3. Increase O2 - By inhibiting CO2 fixation

4. Increase in C6H12O6 - Only in source leaves

5. Decrease in CO2

No effect on plant growth :

1. Decrease in O2

2. Decrease in C6H12O6

3. Increase in H2O

Increase in plant growth :

1. Increase sunlight

2. Increase CO2

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