Write a short note on mesophyll.

Explanation

(i) The tissue present between the upper and lower epidermis of a dicot leaf is called mesophyll.
(ii) It is differentiated into Palisade parench y ma and Spongy parenchyma.
Palisade parenchyma :
(i) It is found just below the upper epidermis. The cells are elongated.
(ii) These cells have more number of chloroplasts.
(iii) The cells do not have intercellular space s and they take part in photosynthesis.
Sp on gy parenchyma :
(i) It is found below the palisade parenchyma tissue.
(ii) Cells are almost spherical or oval and are irregularly arranged.
(iii) Cells have intercellular spaces. It helps in gaseous exchange.