Why are plant leaves specialized structures that are generally flat and thin?
Answer: To maximize the amount of light transmission through the cell layers.
What are the choices given? I might be able to help but you're not giving me much info to work with.
Edit: Alright if that's the case the Answer should be D. Mineral.
Your answer is gravitational forces
The answer is photosynthesis. Hope that helps :)
B.haploid cells are formed