Photosynthetic function can be carried out by
I. Parenchyma II. Collenchyma III. Sclerenchyma
The mesophyll of leaves is parenchymatous, outer region of general cortex is also green and parenchymatous. Collenchyma of young dicot stems is also green and performs photosynthesis. Sclerenchyma is dead tissue and cannot carry out photosynthesis.