Which of the following statements are correct for cell wall?

(i) Cell wall of algae made of cellulose, galactans, mannans and minerals like calcium carbonate.

(ii) Plants cell wall consists of cellulose, hemicellulose, pectins and proteins.

(iii) The primary wall gradually diminishes as the cell matures and the secondary wall is formed.

(iv) The middle lamella is a layer mainly of sodium pectate which holds or glues the different neighbouring cells together.

(v) The cell wall and middle lamellae may be traversed by plasmodesmata which connect the cytoplasm of neighbouring cells.