What is an adaptive advantage of the large leaf like structure called a thallus?

The thallus is a large leaf like vegetative structure present present in the members of the thallophyta group. It is composed of the filaments. The size of the thallus may differ in different members of the group. It can be unicellular as well as multicellular. The one most important adaptive advantage of hauus is that if the member is struck in between rocks in the sea, the thallus can reach the sunlight better.

good thing- during decomposition the organic molecules in organic matter are broken down into simpler organic molecules that require further decomposition or into mineralised nutrients

bad thing- it can be harmful in crop productivity

a neutral ph of 7 and normal organism temperature is needed for a certain enzyme to be effective.  

what would happen to the enzyme if the ph and/or temperature fluctuate greatly from the norm?  

a.the enzyme’s hydrogen bonds will break.  

b.the activation energy will increase.  

c.more product will be formed.

d.the ideal temperature and ph for the enzyme function will decrease.