Science test FILL IN THE BLANKЁЯШн
Woody stems _____ more flexible than herbaceous stems.
Are not
______ is a component of plant cell walls.
Cellulose
The root system of grasses that consists of many nearly equal- sized roots are a _______ system.
Fibourous root system
The vascular cambium is a _________ region in plants.
Growth
Auxin is a type of plant ________.
Hormone
_______ are used to kill weeds, control fruit ripening, and to stimulate plant growth.
Hormones
The exchange of gases in the woody areas of plants takes place through tiny openings in the bark called _______.
Lenticels
The closing of a Venus flytrap is an example of _______.
Nastic movement
A plants stem exhibits _____ gravitropism.
Negative
_____ tropism is growth away from a factor.
Negative
______ transports a sugar solution.
Phloem
A plants response to light is controlled by special pigments called _____.
Phytochromes
A chloroplast is an example of a ________.
Plastid
The three types of plants organs are __________.
Roots, stems, leaves
An annual growth ring is composed of _________.
Spring wood, xylem, summer wood
_____ are found on the lower surface of leaves.
Stomata
Nastic movements is caused by changes in ______.
Turgor pressure
______ is caused by the presence of water inside plant cells.
Turgor pressure
If a plants guard cells malfunction the plant might suffer excessive _______.
Water loss
What is an opposite leaf arrangement
Where 2 leaves are attached at a node
A collection of xylem is known as ________.
Wood
_____ is the plant tissue that carries water from the roots to the leaves.
Xylem
