Sexual Reproduction in Flowering Plants - Chapter 39

asexual reproduction

involves only one parent and produces offspring that are genetically identical to the parent

sexual reproduction

involves the union of two sex cells and shows variations in offspring

gametes

haploid cells capable of fusion

stamen

male parts of the flower (anther and filament)

carpel

female parts of the flower (stigma, style and ovary)

filament function

bring food and water up to the anther

anther function

produces pollen

receptacle function

supports flower

sepal function

protects flower when in bud

petal function

attracts insects to flower flower pollination

stigma function

where pollen lands

style function

where pollen tube grows

ovary function

contains one or more ovules

pollination

the transfer of pollen from an anther to a stigma of a flower from the same species

self-pollination

involves the transfer of pollen from an anther to a stigma on the same plant

cross-pollination

involves the transfer of pollen from an anther to a stigma on a different plant

fertilisation

the union of the male and female gametes to form a diploid zygote

radicle

the part of the plant embryo that develops into the root

plumule

part of the plant embryo that develops into a shoot

non-endospermic seed

has no endosperm when fully formed

endospermic seed

contains some endosperm when fully formed

fruit

a developed ovary

dispersal

the transfer of a seed or fruit away from the parent plant

dormancy

a resting period when seeds undergo no growth and have reduced cell activity or metabolism

germination

the regrowth of the embryo, after a period of dormancy, if the environmental conditions are suitable