Astronaut in space

Glossary and Student Activities

Carbon dioxide
A gas found in our atmosphere.
Chlorophyll
Green substance in plant leaves that lets the plant use the sun's energy, carbon dioxide and water to make food.
Cotyledon
The first leaves on a seedling.
Fertilization
When the pollen grain and ovule join to form a seed.
Flower
The part of the plant that makes seeds.
Fruit
The fleshy part of the plant that contains the seed.
Germination
A process by which a seed changes into a seedling with leaves, stem and roots.
Leaf
The plant's food-making factory.
Oxygen
A gas in our atmosphere that living things need to keep their cells alive.
Photosynthesis
The way a plant makes its food using energy from sunlingt, carbon dioxide from air, water, and nutrients from the soil.
Pistil
the part of the flower that receives pollen to make seeds.
Pollen
Powder made by the stamen that is needed by the pistil to make seeds.
Pollination
When pollin is carried from the stigma to the stamen.
Primary producer
Living things which can convert the sun's energy into food (plants).
Root
The underground part of the plant that absorbs water and nutrients, stores food, and holds the plant in the ground.
Seed
The fertilized ovule of a flowering plant.
Seedling
A very young plant grown from seed.
Stamen
The part of the flower that makes the pollen.
Stem
The main part of a plant that holds the plant up and carries water and nutrients from the roots to the leaves and plant food from the leaves to the rest of the plant.

Student activities