Fern is a vascular plant, yet it is not considered as Phanerogam. Why?

The first vascular plants are…………. .

Answer the following: Nephrolepis plants have a primitive conducting system. However they can not be considered as phanerogams. Give reason.

Palm is a monocotyledonous plant, yet it increases in girth. Why and how?

Why are fungi considered as heterotrophic organisms?

Why the genetic code is considered as comma less?

Fern Which division of plants does this plant come under?

Why the genetic code is considered as comma-less ?

why respiration is considered an exothermic reaction?

Why nucleus is considered as control unit of a cell.

Mango is called as polygamous plant. Why?