plant diversity 3 Flashcards
primary growth starts where
root apical meristem and shoot apical meristem
primary growth is the increase in what
increase in length
secondary growth is the increase in what
girth
what kind of plant experiences secondary growth
woody plants
vascular cambium produces
secondary vascular tissue
cork cambium produces
secondary dermal tissue
periderm is produced by what
the cork cambium
epiderm is replaced by what in secondary growth of plants
periderm
what is the job of the epidermis and periderm
prevent water loss
what is the waxy substance secreted by the epidermis to prevent water loss
cuticle
water loss occurs where
stomata via transpiration
what is the waxy material produced by the cork cells to prevent water loss
suberin
where does gas exchange occur
Stomata
where are lenticels found
periderm
According to the competitive exclusion principle
Two species can not continue to occupy the same niche
What affects water potential
Pressure and solute concentration
What is turgor pressure
Pressure exerted by the plasma membrane to the cell wall and cell wall against the protoplast
What is the protoplast
The living part of a cell, that includes the plasma membrane
What are aquaporins
Water channels found in vacuole and cell membranes that speed up osmosis without changing the direction of water
What are the transport routes that exist before entering the plants xylem
Apoplast route
Symplast route
Transmembrane route
What does the apoplast route consist of
Everything external to the plasma membrane
What are the paths the apoplast route takes
Cell walls, extra cellular spaces and interior of vessel elements
The symplast consists of
Cytosol and plasmodesmata
What is the route of transmembrane
Out of one cell, across another and into another cell
