a clear odorless gas which plants use as a raw material in photosynthesis

a substance that takes part in and undergoes change during a reaction

energy from the sun that reaches Earth as visible light, ultraviolet light, and infrared radiation (heat)

energy that is stored within a molecule

organelle in plant cells used to make food. It contains a light-trapping pigment called Chlorophyll.

A light-trapping pigment in the chloroplasts of plant cells

a simple sugar made by plants during photosynthesis. Plants store long chains of glucose as Starch.

long chains of glucose stored in plants

a substance produced as a result of a chemical change

a clear colorless gas that is a waste product of plants during photosynthesis

an action or condition that provokes a response

a change in a system resulting from a stimulus

the force of water molecules against the cell wall that allows plants to stand up straight.

plant growth toward or away from an external stimulus

the response of a plant to gravity

plant growth toward gravity

plant growth away from gravity

the growth of a plant toward or away from light.

an organism's ability to maintain steady internal conditions when external conditions change.