LIFE CYCLE OF A SEED PLANT

Stages within the shaded area together comprise the seed. Single underlining denotes haploid stages, double underlining indicates diploid stages.
EQUIVALENT TERMS IN LOWER PLANT AND SEED PLANTS

Lower Plants

Gymnosperms

Angiosperms

female gamete

female gametophyte

megaspore

megasporangium

megaporophyll

male gamete

male gametophyte

microspore

microsporangium

microsporophyll

sorus/strobilus

egg cell

endosperm

megaspore

nucellus

female cone scale

male nucleus

tube, generative & prothallial cells

pollen grain

pollen sac

male cone scale

cone

egg cell

polar nuclei, synergids etc.

embryo sac

nucellus

carpel

male nucleus

veg. & generative nuclei

pollen grain

pollen sac (of anther)

stamen

flower