A. Xylem
A.
B. Phloem
B.
C. Lower epidermis
C.
D. Palisade mesophyll
D.
Correct Answer: D
সঠিক উত্তর: D
Explanation
ব্যাখ্যা
The palisade mesophyll is a layer of cells within the leaf that contains a high concentration of chloroplasts, the organelles responsible for photosynthesis.