horticulture

Anther

produces pollen, which house cells which

develop into sperm

Filament

elevates anther

Pollen Grains

germinate and produce a pollen tube and sperm and are transferred by wind or animals

plasma membranes of root cells

control solute uptake

epidermis of root

absorbs water and nutrients before it goes to the xylem

Selective permeability of the plasma membrane of root cells

controls what minerals enter the xylem

Guard cells

regulate the amount of water lost from leaves by changing shape and closing the stomatal pore

Blossom end rot

It occurs when the young developing fruit do not get enough calcium
Water stress, cold soils, and excessive leaf growth from too much N all induce it

cation exchange

the transfer of positive ions such as calcium, magnesium, and potassium from soil to plant roots

Phloem

composed of long tubes of sieve tube members stacked end to end

300-foot gain in elevation

average 1°F drop in temperature.

abscisic acid

ABA