Tissues of Plants Flashcards
Angiosperm groups
- monocotyledon
2. dicotyledon
cell types
- parenchyma
- collenchyma
- sclerenchyma
tissue types
- dermal
- vascular
- ground
define autotroph
produces its own food source (self-feeder)
Main activities a plant must perform
- transport of materials
- seed production
- food storage
why must materials be transfered?
to keep all parts of the plant alive
why is seed production important?
to continue the species
why is food storage important?
for the start of each new growing season
define cellulose
large polysaccharide molecule of glucose units that provides structure and support to the plant
how many cell walls do plants have?
2
the primary and secondary cells walls are categorized by
permeability and rigidity
the dermal tissue system is composed of
- epidermis
- cork or bark
define epidermis
single outer layer of cells
define cork/bark
several layers of empty cell wall “bricks”
the vascular tissue system is composed of
- phloem
- cambium
- xylem
function of phloem
carry food solution from leaves
function of cambium
production of more cambium, phloem, and xylem cells
function of xylem
carry water and minerals up to leaves and other plant parts
location of phloem
outside of the stem root or shoot
location of xylem
inner side of the cambium layer
the ground tissue system is composed of
pith and cortex
define pith
the central core of tissue in most plants
function of cortex
stores food, water and minerals and replaces or adds to outer covering
define angiosperms
flowering plants
define monocotyledons
single food storage organ in the seed
define dicotyledons
2 food storage organs in the seed
examples of monocots include
grasses, grain crops, bulb, corn, rhizome plants
iris plant, onion
examples of dicots
most flowering plants, shrubs, trees
strawberry plants, carrots
define parenchyma cells
responsible for most metabolic function in plants
thin primary cell wall NO secondary cell wall
define collenchyma cells
function in supporting growing parts
thick primary cell wall NO secondary cell wall
define sclerenchyma cells
function in supporting the plant
rigid secondary cell walls hardend with lignin
define tracheid’s
specialized cells that function to conduct water and provide support
vascular bundles consist of the
phloem, xylem, cambium