Permafrost condition is characteristic feature of

Which of the following statement is correct ?

In a pond, we see plants which are free-floating; rooted – submerged; rooted emergent; rooted with floating leaves. Write the type of plants against each of them.

Comment on the following figures : $\rm {I,\,II}$ and $\rm {III}$ : $\rm {A, \,B, \,C, \,D, \,G, \,P, \,Q, \,R,\,S}$ are species

Name the term used to describe a single dominant species that dictates community structure