Question

Why when chloroplast is align perpendicular to wall?

Answer 1

Answer:

Explanation:

Chloroplast align parallel to the walls of mesophyll cells (mainly palisade cells) when intensity of light is minimum, to get more and more of light. This condition is called Epistrophe.

And when the intensity of light is maximum the chloroplast gets alinged perpendicular to the incident light or the mesophyll cells to avoid photooxidation of chlorophyll a molecule This condition is called Parastrophe.

Answer 2

Chloroplast are the green parts of plant found at various locations mainly in stem and leaves (where photosynthesis takes place). They are the sites of photosynthesis.They are aligned perpendicular to the wall so that each chloroplast occupies lesser area and more number of chloroplast can be in direct contact with the plant surface in order to increase photosynthesis rate in a plant.

Hope it helps...:)