Cycas is

Coralloid roots of $Cycas$ are associated with $:-$

Top-shaped multiciliate male gametes,and the mature seed which bears only one embryo with two cotyledons,are characteristic features of

What is the relationship between the seeds of Cycas and its coralloid roots?

Roots in some gymnospermic genera have fungal association in the form of $A$ in $B$. Here,$A$ and $B$ refer to:

The megasporophyll of $Pinus$ consists of: