Leaf parts

A leaf is green because it has chlorophyll.

• True

• False

Leaves absorb sunlight.

• True

• False

What do you call the part that is the tip of the leaf?

• Leaf apex

• Leaf margin

• Vein

• Mid vein

What do you call the part that joins the leaf to the stem?

• Leaf margin

• Petiole

• Vein

• Mid vein

What do you call the part that runs through the middle of the leaf and provides support?

• Leaf margin

• Petiole

• Vein

• Mid vein

What do you call the part that is the edge of the leaf?

• Vein

• Petiole

• Leaf margin

• Mid vein

Leaf S

• Eastern white pine

• balsam poplar

• sweet gum

• ginko

A dichotomous key for trees is provided. Hikers found a tree that has large brown cones and single sharp needles. What species of tree have the hikers found?

• Juniper
• Pine
• Spruce
• Fir

A lobed leaf

• has an edge that is jagged, like teeth on a saw.

• has an edge that has no teeth or lobes - smooth and continuous.

• has an edge that has deep indentions.

• has a vein pattern that reaches out like a palm.

A smooth leaf

• has an edge that has no teeth or lobes - smooth and continuous.

• has an edge that is jagged like teeth on a saw.

• has an edge with deep indentions.

• has a vein patter that looks like a feather.