1 Flashcards
ground tissues
parenchyma
collenchyma
schlerenchyma
dermal tissue
epidermis
(also root hairs, other trichomes and stomata)
simple tissue
ground tissue and dermal tissue
compound tissues
vascular tissues
vascular tissues
xylem
phloem
xylem
transports water from roots to where its needed
mostly for photosynthesis (leaves)
phloem
from leaves to different parts to transport nutrients to be stored in different areas.
three tissue systems
ground tissue performs a variety of functions and makes up the bulk of the plant body
vascular tissue is responsible for transport in the plant
dermal tissue that covers the plant body
tissues consisting of only one cell type
simple tissues
tissues consisting of more than one cell type
compound tissues
herbaceous plants
covered with an epidermis
Woody plants
the epidermis tears and dries out, and eventually, a periderm (bark) is formed
functions of collenchyma
lends support
serves as strengthening
can photosynthesize
root hair cell
a finger-like outgrowth of a root epidermis cell
responsible for the absorption of water
drainage
is important with water in plants
dermal tissues
outer layer
epidermis (smooth) and periderm (hard) cover and protect the plant organs
epidermis
transparent
do not contain any chloroplasts
only guard cells contain chloroplast
guard cells
specialized cells that surround pores in the epidermis, forming the stomata surround.
looks like beans
cuticle
prevents excess loss of water
the epidermis of exposed plant organs is covered with a waxy layer (cuticle)
trichomes
unicellular or multicellular outgrowths of the epidermis
various functions
root hairs
trichomes that are responsible for the absorption of water
herbaceous plants
covered by an epidermis that generally consists of one layer of cells
woody plants
also have an epidermis but as organs grow thicker, the epidermis tears and is replaced by the periderm
the periderm in old woody plants forms the bark
stoma
the hole in the stoma opens and closes
during the day it closed to store water
vascular tissues
responsible for transport in plants
xylem consists of 4 cell types
wood vessel segments
tracheids
parenchyma
fibres
functions of xylem
transport of water and dissolved mineral salts from roots to leaves
phloem consists of four cell types
sieve tube elements
companion cells
parenchyma
phloem fibres
functions of phloem
transport of dissolved organic food from the leaves to other plant parts
dicot and monocot
dicot is two lobes and monocot is single-lobed seeds
where xylem and phloem are found in the plant
xylem is found closer to the center of the plant structures while the phloem is positioned towards the outside
