The following features belong to  
I. Cells are thick at corner due to the deposition of cellulose, hemicelluloses and pectin. 
II. Cells may contain chloroplast and show carbon assimilation.
III. Intercellular spaces are absent. 
IV. Provide  mechanical support to growing parts of the plant such as young stem and petiole of leaf of dicots. 

• A

  Collenchyma 

• B

  Parenchyma 

• C

  Xylem 

• D

  Sclerenchyma