Question

what is the main function of the chloroplast in a plant cell?
to produce steroid hormones

to store waste in the cell

to use energy from sunlight to make sugar

to control which substances enter and leave the cell

Explanation:

To determine the main function of chloroplasts in plant cells, we analyze each option:

• "To produce steroid hormones": This is not a function of chloroplasts; steroid hormone production is related to other cellular structures (e.g., in animal cells, the smooth endoplasmic reticulum).
• "To store waste in the cell": Vacuoles are responsible for storing waste in plant cells, not chloroplasts.
• "To use energy from sunlight to make sugar": Chloroplasts contain chlorophyll and are the site of photosynthesis, where light energy is converted into chemical energy (sugar) using carbon dioxide and water.
• "To control which substances enter and leave the cell": The cell membrane (plasma membrane) is responsible for this, not chloroplasts.

Answer:

to use energy from sunlight to make sugar