Question

1. photosynthesis takes place in what organ of the plant?
2. photosynthesis takes place in what organelle within the palisade mesophyll cells?

Explanation:

For question 8: Leaves are the main organs where photosynthesis occurs as they have a large surface area to capture sunlight and contain the necessary structures like chloroplasts (in mesophyll cells).
For question 9: Chloroplasts are the organelles within palisade mesophyll cells (which are rich in chloroplasts) that contain chlorophyll and the enzymes required for the light - dependent and light - independent reactions of photosynthesis.

Answer:

1. Leaves
2. Chloroplasts