Multiple choice

Which of the following is/are not internal factor(s) that affect(s) photosynthesis?

  1. Orientation of leaves

  2. Mesophyll cells and chloroplast

  3. Amount of chlorophyll

  4. Carbon dioxide concentration

  5. Number of leaves

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This is the correct option as carbon dioxide concentration is not an internal factor that affects photosynthesis. It is an external factor.