Question

the reactants and products of photosynthesis can be interchanged. true false
photosynthesis can occur anywhere in plant cells.
there is transfer of matter and flow of energy between a plant and its environment.
the sugars produced act as an energy source for both plants and animals.

Explanation:

1. "The reactants and products of photosynthesis can be interchanged."

Photosynthesis has reactants (carbon dioxide, water) and products (glucose, oxygen). The reverse process (cellular respiration) uses glucose and oxygen to produce carbon dioxide and water, so in terms of the overall processes, the reactants and products can be interchanged between photosynthesis and respiration. So this statement is True.

Photosynthesis occurs in the chloroplasts of plant cells, which are specific organelles. Not all parts of a plant cell (like the nucleus or vacuole) can perform photosynthesis. So this statement is False.

Plants take in carbon dioxide (matter) and sunlight (energy) from the environment during photosynthesis, and release oxygen (matter). They also take in water (matter) from the soil. So there is transfer of matter (like CO₂, H₂O, O₂) and flow of energy (sunlight to chemical energy in glucose) between plants and their environment. This statement is True.

Answer:

True

2. "Photosynthesis can occur anywhere in plant cells."