The arrangement of megaspores in a tetrad in a gymnosperm is

The arrangement of megaspores in a tetrad in an angiosperm is :

Tetrad of megaspores is generally

Tetrad of megaspores is generally

Out of megaspre tetrad, the functional megaspore is

Tetrad is made of

Tetrad is made of

Tetrad is made of

What is a tetrad?

A : Microspores and megaspores are produced in same lax in gymnosperms. R : Lax represents compact strobilus which bear microsporophyll and megasporophyll.