UNIVERSITY OF THE WEST INDIES CAVE HILL CAMPUS  

DEPARTMENT OF BIOLOGICAL & CHEMICAL SCIENCES  

BIOL1051 - BIODIVERSITY I : THE PLANT KINGDOM  

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

 

2004-10-01

CMSC