Trees have a hard and thick stem called the:

_______ are plants that have weak stems.

All green leaves contain a pigment called

The thick and hard covering on the trunk is called the

Plants with weak stems that grow along the ground are called

Leaves have tiny holes called the:

What is the main food making part of the plant?

Stems of _________ are usually hard and woody.

Stems of __________ are soft and weak.