Biology Quiz 2 Flashcards
a group of structures designed to function together as a unit to perform a particular job for an organism
system
a structure within a system that has a definite form and performs a definite function or functions for the system
organ
The flat portion of a leaf
blade
small leaf-like or scale-like structures that helped to cover the leaf when it was developing
stipules
contain developing leaf or stem structures
buds
it attaches the blade to the stem and contains vascular tissues that conduct substances between the blade and the stem.
petiole
has one blade on every petiole
simple leaves
has more than one blade on every petiole
compound leaves
the points where the leaves grow from
nodes
when two leaves grow from a node this is known as what
opposite
only one leaf grows from each node in an alternating pattern up the branch
alternate
When there are three or more leaves growing from each node
whorled
leaves growing around the base of the plant
rosetta
two parts of a simple leaf
blade and petiole
Living material that is constructed in such a way as to perform a particular task for the organs of an organism
tissue
Most of the body, or structure, of
the plant
structural tissue
composed of elongated, tubular cells, are the sap-conducting tissues
vascular tissue
growth and repair of plants. consists of rapidly growing and dividing cells that differentiate to produce new tissues during the plant’s growing season or when the plant needs to repair or replace worn-out tissue
meristematic tissue
the three parts of a leaf
epidermis, mesophyll, and veins
provides covering and protection for both the upper and lower leaf surfaces
epidermis
the lower epidermis of leaves contains tiny openings called
stomata
the middle portion of the leaf, which forms the bulk of the leaf.
mesophyll
runs through the mesophyll layers and contain the vascular tissue
veins
