Root hair, central xylem, soil water , leaves, stem rearrange in order

In terms of alternation of generations, the internal parts of the pollen grains of seed-producing plants are most similar to a ) moss sporophyteb) moss gametophyte bearing both male and female gametangiac) fern sporophyted) fern gametophyte bearing only antheridia

Temperatures in ponds and lakes vary by season. select the best answer from the choices provided t f

Crossing over is a method of (blank)?