Tree

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

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

What type of tree has leaves?

• Deciduous

• Dichotomous

• Coniferous

• Alternating

The branchy part of the tree above the stem is called.

• Canopy.

• Crown.

• Herb.

• Shrub.

Which of the following trees are most common in boreal forests?

• Coniferous

• Deciduous broadleaf

• Broadleaf

• Deciduous

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