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Roots (other types of roots/modifications (prop roots (root growth in air,…
Roots
other types of roots/modifications
storage roots
long term stroage
carbs
allow energy without sunlight
more stable environment
prop roots
root growth in air
act as stabalizer
provide nutrients to stem
aerial roots of orchids
attached to branches
dangle freely
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large dead cells
contractile roots
upper portions slowly contract
bulbs buried deeper
mycorrhizae
soil fungi
symbiotic
relationship benefits both
good storage
root nodules and nitrogen fixations
no enzymes for nitrogen
nitrogen fixation
infection thread
root nodule
haustorial roots
parasitic flowering plants
uses host as energy
roots of strangler figs
young
grow on branches
tight network
internal structure of roots
root cap
protect
apical meristem
root apical meristem
mitotically inactive central region
quiescent center
zone of elongation
some meristem activity
stage of maturation
elongation of the cells
zone of maturation
root hair growth
water absorption
thin cuticle
transfer
minerals
cortical intercellular spaces
casparian strips
mature portions of the root
root hairs
few day life span
water absorption still continues
barely
passage cells
slow development
root pressure
keeps plant upright and with water
external structure of roots
organization of root systems
prominent taproot
lateral roots
radicle
embryo from a seed
fibrous root system
adventitious roots
more absorbtive
structure of individual roots
fairly simple
root tip
growth
localized
root cap
mucigel
lubricates
dirt is hard microscopically
origin and development of lateral roots
lateral roots
initiated by cell divsion
when released it is complete
