Question

question 3
1 pts
under normal conditions, gases diffuse through small holes in the leaves of a plant. when the weather is very hot and dry, plants may close these openings to conserve water. how are the closures most likely to affect photosynthesis?
they increase the rate of photosynthesis by increasing the amount of water in the leaf.
they increase the rate of photosynthesis by increasing the amount of oxygen in the leaf.
they decrease the rate of photosynthesis by preventing carbon dioxide from entering the leaf.
they have little or no effect on photosynthesis because gases do not take part in the process.
question 4
1 pts
a student is making a model to illustrate the functions of adp and atp in photosynthesis. which model best illustrates the role of atp in photosynthesis?
a power plant that generates energy
a rechargeable battery that stores and releases energy
a pan that carries coal
a hammer that helps break apart water molecules

Explanation:

For Question 3: Photosynthesis requires carbon - dioxide which enters the leaf through the openings. Closing them prevents CO₂ entry, thus decreasing the rate of photosynthesis.
For Question 4: ATP acts as an energy - storing and releasing molecule in biological processes. A rechargeable battery that stores and releases energy is an appropriate model for its role in photosynthesis.

Answer:

Question 3: They decrease the rate of photosynthesis by preventing carbon dioxide from entering the leaf.
Question 4: a rechargeable battery that stores and releases energy