A mature seed of a gymnosperm contains mark all that apply a

A mature seed of a gymnosperm contains (mark all that apply):

a.A seed coat

b.An egg

c.A megaspore

d.The remnants of the megasporangium

e.A female gametophyte (a “megagametophyte”)

f.An embryo (the next sporophyte generation)

Solution

The seeds of many gymnosperms (literally “naked seeds”) are borne in cones and aren\'t seen until maturity.

a. A seed is coated by seed coat to provide protection

b. It is a mature ovule which includes the fertilized egg

c. In gymnosperms one of the 4 megaspores is functional at maturity

d.The rest three soon degenerate, which are called remnants of megasporangium

e. The megaspore mother cell inside the female cone divides via meiosis to supply 4 haploid megaspores; one of the megaspores divides to form the female gametophyte.

f. One of the 2 sperm cells by way of the generative cell fuses with the egg, forming a diploid zygote that divides to shape the embryo.

So all the options are correct...