plants Flashcards
Carry substances between roots and leaves; provide support for plant; holds leaves up to sunlight; produce leaves, branches, or flowers at the nodes
Stems
The plant structure that contains a young plant inside a protective covering
Seed
A vascular tissue that moves water and nutrients into the leaf
Xylem
A vascular tissue that moves finished sugars out of the leaf
Phloem
The organelle where chlorophyll is found
Chloroplast
the outer layer of bark
cork
And a layer of living cells just under the dead cork constantly dividing to produce new cork cells
cork cambium
tugor pressure
A kind of pressure caused by the presence of water inside a plant’s central vacuoles
taproot system and fibrous root system
Types of roots
I thin ring of Phloem and the tissue on the outside of the tree trunk
bark
a nonvascular plant that’s shaped like a human liver. found growing as a thick crust on moist rocks or soil along the sides of a stream.
Liverworts
A substance (made of sugars) that is common in the cell walls of many organisms
Cellulose
The waxy, waterproof layer that covers the leaves and stems of most plants.( keeps plants from water loss)
Cuticle
specialized tissue in plants that carries water and nutrients
vascular tissue
nonvascular plants
Bryophytes
Green and leafy with attached root-like rhizoids; always present
gametophyte
Consists of the stalk and capsule; not always present
sporophyte
Plants who is vascular bundles are evenly distributed throughout their stems
Monocots
Plants whose vascular bundles are found in a ring around the outer portion of the stem
Dicots
the layer of cells in a leaf where most photosynthesis occurs
palisade layer
the vascular tissue of leaves; type of vascular bundleVeins
Loosely packed cells, so that carbon dioxide, water vapor, and oxygen can move easily to the palisade layer
spongy layer
Small openings on the underside of a leaf through which oxygen and carbon dioxide can move; guard cells on either side of the stomata regulate the size of the opening
Stomata
Rings or layers of wood which represent one growth period of a tree. In cross section the rings may indicate the age of the tree.
Annual rings
A thick-walled that helps support a plant
Fibers
Absorbs water and minerals from the ground. Anchors plant in ground.
roots
herbaceous and woody
Types of stems
They have thin, leafy structures attached by rhizoids and transport water by diffusion
Hornworts
tiny leafy-stemmed flowerless plants, which includes sphagnum
moss
