Which one of the following plants is monoecious?

What is the minimum haploid number $(n)$ of chromosomes found in the plant kingdom?

Provide the missing terms for the following analogy-type questions:
$(i)$ Angiosperms : Flower :: Conifers : ...
(ii) Moss : Protonema :: Fern : ...

Which of the following is a characteristic of Cryptogams?

Match the items in Column-$I$ with those in Column-$II$:

Column-$I$	Column-$II$
$(a)$ Peritrichous flagellation	$(j)$ Ginkgo
$(b)$ Living fossil	$(k)$ Macrocystis
$(c)$ Rhizophore	$(l)$ $E. coli$
$(d)$ Smallest flowering plant	$(m)$ Selaginella
$(e)$ Largest flowering plant	$(n)$ Wolffia

What is the main difference between flowering and non-flowering plants?