Trees and Tree Structure

What is the portion of a stem between two leaves or 2 places where leaves once grew?

• leaf scars

• lenticels

• abscission layers

• internodes

What structures on a stem allow air to enter the stem and provide for respiration?

• lenticels

• leaf scars

• abscission layers

• internodes

What forms at the base of a petiole to sever a leaf from a branch?

• lenticel

• leaf scar

• abscission layer

• internode

What type of gymnosperm has no brances and frond-like leaves?

• conifer

• cycad

• ginkgo

• evergreen

Which type of root grows from a plant's stem, branches, leaves, or mature woody roots?

• taproot

• adventitious root

• fibrous root

• spreading root

An annual growth ring is made of two layers, a lighter outer layer with large vessels and a darker inner layer with smaller vessels. What is the lighter outer layer called?

• springwood

• winterwood

• autumnwood

• summerwood

What is the food-storing central core of a young woody stem?

• heartwood

• sapwood

• cuticle

• pith

Once a leaf falls off, what is all that remains on the tree?

• lenticels

• leaf scar

• lateral bud

• terminal bud

What is the ring of growth cells that separates a tree's bark from the woody tissues?

• Phloem

• carbon-oxygen cycle

• vascular cambium

• xylem tissue

A point on a stem that a leaf grows from is a...

• internode

• leaf scar

• lateral bud

• node