Leaf Vocabulary

Question 1

Petiole

Answer 1

The stem of a leaf or leaflet

Question 2

Sessile

Answer 2

Leaves lacking a Petiole (stem)

Question 3

Rachis

Answer 3

The stem of a compound leaf that joins to the petiole

Question 4

Margin

Answer 4

The edge of the leaf or leaflet

Question 5

Stipule

Answer 5

The minileaf near the node where the petiole starts

Question 6

Stomata

Answer 6

The pore that the leaf breathes through. It looks like a mouth.

Question 7

Simple Leaves

Answer 7

One leaf on the petiole, though it can be big and lobed

Question 8

Compound leaves

Answer 8

More than one leaf blade shares a common stem

Question 9

Palmate Compound Leaf

Answer 9

The leaves have a common point of attachment in the rachis, which then attaches to the petiole

Question 10

Pinnately compound

Answer 10

each leaflet has a separate point of attachment on the rachis

Question 11

Alternate

Answer 11

The leaves are at different heights on the twig

Question 12

Opposite

Answer 12

the leaves are the same height but on opposing sides

Question 13

Whorled

Answer 13

there are more than two leaves on the twig, arranged in a spiral

Question 14

Phyllotaxy

Answer 14

the description and labeling of the leaf arrangement