The leaves of a plant typically have different tissue layers that function in different ways.The epidermis layer functions like a covering of skin to protect the leaf while vascular bundles carry water and nutrients through the leaf.The palisade mesophyll layer is responsible for most of the photosynthesis that occurs while the spongy mesophyll layer underneath it aids in the exchange of gases (CO₂ and O₂)and water vapor.In which leaf tissues would you expect to find the highest density of chloroplasts?

Question

Quizplus · Accepted Answer

The palisade mesophyll layer is responsible for the majority of photosynthesis that takes place in the leaf and therefore contains the highest concentration of chloroplasts. Chloroplasts are the organelles responsible for photosynthesis, so the tissue layer with the most chloroplasts will be the one where the most photosynthesis occurs.

The Leaves of a Plant Typically Have Different Tissue Layers