Parts of the Stem

Where does a leaf and bud attach to the stem?

A leaf and bud attach to the stem is a node.

What is the tip of the external stem called? What kind of tissue does it have inside that allows it to grow?

The tip of the external stem is called Terminal bud. Apical Meristem where growth occurs in both roots and shoots.

In what directions do the xylem and phloem conduct materials?

The xylem and phloem conduct materials in directions of the center & outside of the stem.

Internode

distance between two nodes; tells how much the tree grew in one season.

When a leaf or bud falls off, what is left behind?

Leaf scar

Where does gas exchange occur on a stem?

Lenticels

Name the three types of internal tissues and their functions.

The three types of internal tissues and their functions are: xylem - conducts the water and minerals upward throughout the plant. Phloem - conducts the food that produced in the leaf. Cambium - the tissue responsible;e for the production of new xylem & phloem.

What increases the girth of a plant?

Cambium

Lenticles

are small spots o the stem that allow a stem to exchange gases (oxygen & carbon dioxide) with the environment.

Terminal bud

contains apical meristem; found at the tip of a stem.

Lateral

helps the bud survive harsh climate changes.

Leaf scar

is the remains of the leaf aster it has fallen of the tree.

Node

where the leaf and bud attaches to the stem.

Name the five types of modified stems and give an example of each.

The five types and there example are : Bulb - onion, garlic, Corm - gladiolus, Rhizome - hosta, Stolon - strawberries, & Tuber - potatoes.

Name the four functions of the stem.

The four functions of the stem are stems support the leaves, move water, minerals, and food through the whole plant, can also produced food through photosynthesis, and store food that has been been manufactured by the plant.