Read the following statements about bryophytes : 

(i) Mosses serve as food for birds and herbivores 

(ii) Sphagnum, a liverwort, provide peat that have long been used as fuel 

(iii) Sphagnum, because of their high capacity to hold water is used as packaging-material for trans-shipment of living plant materials 

(iv) Mosses have a little role during ecological succession 

(v) Mosses, as they form dense mat, prevent soil erosion 

How many of the above statements are correct ?