Biology is the of things

An organism is an individual thing.

A habitat is a where a particular organism normally .

Botany is the study of

Zoology is the study of .

A plant is a plant that produces wood.

A herbaceous plant is a plant.

An angiosperm is a plant with that produce seeds covered with .

A flower is one of the flowers in the center of a composite flower head. A flower is one of the petal-like flowers arranged around the outer edge of a composite flower head.

A legume is a plant of the family.

Nitrogen-fixing bacteria grow on the of legumes and convert nitrogen in the into ammonia and nitrates.
Denitrifying bacteria is bacteria in the that convert unused nitrates back into nitrogen.
Nitrifying bacteria is bacteria that provide nitrates to the soil from decomposing and .

A is a plant with two cotyledons per seed. These plants usually have flower petals that are arranged in groups of or five. The leaves are usually and flat with branching veins. And they usually have a system.

A is a plant with only one cotyledon per seed. These plants usually have flower petals that are arranged in groups of . The leaves are usually long and with parallel veins. And they usually have a root system.

are any of the types of grass used by man for food.

grasses are any of the types of grass used to feed livestock.
grasses are any of the grasses used as coverings for lawns, athletic fields, golf courses and playgrounds.

Stolon are creeping special stems that grow the ground and produce new wherever a node touches the . These are common in plants. They are also called .

A is the bottom portion of a grass leaf, which wraps partially around the stem.

is another name for a broadleaf tree.

describes a tree that loses its leaves each fall.

What are the two main kinds of root systems? system, root system

Three types of growing seasons in plants:
, , and

complete their entire life cycle in one growing season.

complete their life cycle in two growing seasons.

grow from year to year and bloom each season.

The purpose of flowers is to help plants after their kind by forming fruits with .

The purpose of leaves is to manufacture for the plant through .

The purpose of stems is to the plant's leaves and flowers.

The purpose of roots is to the plant to the soil absorb and , and to store .

Which group of North American trees are known for distinctive fruits called samaras?

The nitrogen cycle is important because both and require nitrogen for survival. Plants use the nitrogen to form . Animals and man need the proteins that come from the .

In what ways are grasses important to man?
Grasses provide much of the world's for both animals and man. Grasses also help prevent .

Deciduous trees their leaves and remain in the winter.
Evergreen trees their leaves throughout the year.