Question

using your understanding of the function of chloroplasts and specialized cells, infer why plant root cells lack chloroplasts. (1 point)
root cells have two central vacuoles.
roots require fewer nutrients.
root cells have many mitochondria.
roots are underground and are not exposed to sunlight.

Explanation:

Chloroplasts are responsible for photosynthesis, which requires sunlight. Plant roots are underground and not exposed to sunlight, so root cells don't need chloroplasts for photosynthesis. The other options: having two central vacuoles, requiring fewer nutrients, or having many mitochondria are not related to the absence of chloroplasts (as chloroplasts' function is tied to sunlight - dependent photosynthesis).

Answer:

D. Roots are underground and are not exposed to sunlight.