TREE UNIT

Pines have needles.

• true
• false

What holds a tree in place?

• stem
• roots
• trunk
• leaves

Roots are the part of the plant that grows underground.

• true

• false

What does a plant need in order to survive?

• water, nutrients, sunlight, air

• water and air

• other plants

• it doesn't need anything

What is an evergreen tree?

• a tree with broad flat leaves

• a tree with no leaves

• a tree with long thin needles for leaves

• a tree that loses its leaves each fall

The petiole is

• a leaf with many leaflets

• the stem of a leaf

• a jagged edge of a leaf

A blade is

• the stem of a leaf

• the central stalk of a leaf

• the broad flat part of a leaf

Why would a tree cookie have thick rings?

• Drought caused the thick rings

• it got enough sunlight, water and nutrients

• it was competing with another tree for water

• it was a sad tree

Trees release oxygen needed by human and animals to breathe.

• True

• False

Trees lessen pollution.

• True

• False