Life Science Chapter 10

STUDY
PLAY

Terms in this set (...)

Kingdom Plantae
producers, eukaryotic, multicellular, organized tissues, plastids, cell walls.
Organs
Leafs, roots, stems
Node
A region on a stem where a leaf is or was attached
Fibrous root
cluster of roots that are about equal in size
Taproot
one or a few main roots that are thicker and longer than the other roots of the plant
Blade
flat part of the leaf
woody stems
Stems that are hard and not very flexible are called
herbaceous stem
The softer and more flexible type of stem
parallel venation
the larger veins in the leaf are all parallel to each other.
palmate venation
the leaves have veins that branch from the base of the leaf.
pinnate venation
there is one main vein extending the length of the leaf, with smaller veins branching away from the main vein along its entire length.
Alternate
one leaf per node
Opposite
two leaves per node
Whorled
more than two leaves per node
Petiole
attaches the leaf to the node
Cell walls
support the weight of the plant
Turgor pressure
support the weight of the plant
Xylem
forms wood
Growth ring
formed by springwood and summerwood
Palisade layer
where majority of photosynthesis takes place
Hormones
chemicals that control plant growth
Tropism
growth response of plants to their environment
Nastic movement
reversible, repeatable plant movement
Cellulose
primary material in cell walls
Air Exchange
lenticils, stomata, and root coverings
Positive tropism
response towards tropism
Negative tropism
response from tropism
Botany
the study of plants
Vein
water conducting tissues in leaves
Turgor pressure
keep the plants stiff
Root hairs
tiny extensions in the epidermal layer of the root to help absorb water
Phytocromes
special pigments that control a plant's response to
Plastid
a chloroplast is an example of
Phloem
transports a sugar solution
Vascular bundles
arrangements of xylem and phloem in leaves and in nonwoody plants
Epidermis
the outermost tissue of leaves, young roots, and young stems
Bark
the region to the outside of the xylem in a tree trunk
Gravitropism
a plant's growth response to gravity
Phototropism
a plant's growth response to light
Short-day
plants that bloom when nights are long
Photoperiodism
a plant's response to the length of time it is exposed to light
Day-neutral
plants that bloom whenever moisture and temperature are acceptable