Reproduction System

primary oocyte

spermatids

secondary oocyte

oogonia

zoophyte generation

bryophyte generation

sporophyte generation

gametophyte generation

genetically different

genetically identical

vegetative similar

vegetative different

male gametophyte generation

male sporophyte generation

female gametophyte generation

female sporophyte generation

8

6

2

4

haploid nucleus

ovule

style

zygote

lower the water potential in guard cells

increase the water potential in guard cells

become turgid

increased temperature of guard cells

85% and 15%

75% and 25%

90% and 10%

70% and 30%

vegetative propagation

diploid vegetation

haploid vegetation

fragmented vegetation

tulip

onion

carrot

mint