Plants that flower when night length is short are called.....................

A type of tree that loses all of its leaves at the same time each year.

A type of tree that keeps its leaves year around.

A change in the direction a plant grows that is caused by light.

Plant growth that changes in a response to the direction of gravity are called...............

Plant grows toward a stimulus is called .....................

Plant grows away from a stimulus is called .....................

Plant growth in response to a stimulus is called ................

A change in direction of plant growth toward the light.

A change in direction of plant growth either toward or away from the light.

Change in the growth of a plant's root toward the center of the Earth or the force of gravity.

Change in the direction plant grows caused by gravity.

Maple tree is ..................... tree.

Oak tree is ..................... tree.

Pine tree is ..................... tree.

Elm tree is ..................... tree.

Holly tree is ..................... tree.

Before falling off, leaves of deciduous trees may

In fall green chlorophyll in leaves ................... .

In fall green chlorophyll in leaves ................... .

Without chlorophyll, yellow or orange pigments in leaves ................. .