(1) Cellulose: Cellulose is a polysaccharide, that helps in forming the cell wall of plants, algae, fungi. It is digested by animals but not by human beings. It helps in the smooth movement of food in the alimentary canal.
(2) Chloroplast: It is a plastid present only in the plant cells containing chlorophyll and pigments.
(3) Grana: These are the stacked sac-like structures formed by the third membrane of the chloroplast. Light reaction of photosynthesis takes place in it.
