Ray fungi are

Which of the following statements is correct?

Given below are two statements. Based on them,select the correct option given below.
Statement $I$: $N_2$ fixing heterocystic cyanobacteria is Anabaena.
Statement $II$: $N_2$ fixing Anabaena is symbiotic with lichens.

Organisms of which of the following kingdom do not have a nuclear membrane?

Which process is a type of reproduction in $E. coli$?

Which of the following statements correctly describes $Cyanobacteria$?