Abeka 7Th Grade Science Test 11

Front 1

A tree with ____ branching has several main branches close to the ground.

Back 1

Spreading

Front 2

Which method of deforestation involves removing all but a few selected trees from a given area?

Back 2

Seed-tree method

Front 3

What is the most destructive type of forest fire?

Back 3

Crown fire

Front 4

A young tree is call a ____.

Back 4

Sapling

Front 5

Which of the following statements is false?

1. All trees are perennials.

2. All trees are at least 20 feet tall.

3. All trees have five branches or more.

4. All trees have a single main stem.

Back 5

3. All trees have five branches or more.

Front 6

Who was the first head of the U.S. for service?

Back 6

Gifford Pinchot

Front 7

Which of the following is not a function of tree roots?

1. Absorbing water and minerals

2. manufacturing food for the tree

3. Anchoring the tree in the soil

4. storing food

Back 7

2. Manufacturing food for the tree

Front 8

Which method of deforestation involves removing all the trees from areas that are 100 acres or less?

Back 8

Block cutting

Front 9

Which of the following is not a gymnosperm?

1. Live oak

2. Cycad

3. Conifer

4. Ginkgo

Back 9

1. Live oak

Front 10

The type of forest that grows up after a virgin forest is cut

Back 10

Secondary forest

Front 11

The branch of forestry that deals with the care and culture of forest trees

Back 11

Silviculture

Front 12

The location of a tree's phloem

Back 12

Bark

Front 13

The main tissue of a trunk

Back 13

Wood or xylem

Front 14

A small pore that allows air to enter a stem

Back 14

Lenticel

Front 15

The layer of growth cells just below the bark of a tree

Back 15

Vascular cambium

Front 16

A place on a stem that leaves grow out of

Back 16

Node

Front 17

The central core of a young woody stem

Back 17

Pith

Front 18

The rough outer covering of a tree

Back 18

Bark

Front 19

A waxy protective layer on a leaf

Back 19

Cuticle

Front 20

The location from which a tree grows in length

Back 20

terminal bud

Front 21

A top leave a portion of a fully grown tree

Back 21

Crown

Front 22

The tissue that wood is composed of

Back 22

Xylem

Front 23

The layer of cells that forms at the base of a petiole to sever a leaf from a branch

Back 23

Abscission layer

Front 24

Tree roots are either taproots or ____ roots.

Back 24

spreading

Front 25

A forest's thick top layer of interlaced leaves is the ____.

Back 25

Canopy

Front 26

And intensive forest management system that is intended to cause forests to grow more high-quality trees that mature more quickly than they normally would is _____ management.

Back 26

Sustained yield

Front 27

The northern and southern limit at which trees grow is the ____.

Back 27

Tree line

Front 28

Groups of tall plants or trees are called ____.

Back 28

stands

Front 29

Broadleaf trees are also called _____ trees.

Back 29

Hardwood

Front 30

The hard, dead, clogged wood at the center of a tree is ____.

Back 30

Hartwood

Front 31

What is the technical term for a system or object that produces carbon dioxide?

Back 31

Carbon source

Front 32

The oldest living organisms on earth are ____.

Back 32

Bristlecone pines

Front 33

Which leaves pigment gives leaves a yellow color?

Back 33

Xanthophyll

Front 34

The tallest tree species is the ____.

Back 34

Coast redwood

Front 35

Which American forest region extends along the Mississippi river?

Back 35

Bottomland hardwood forest

Front 36

What describes a tree that loses its leaves in the fall and stays bare all winter?

Back 36

Deciduous

Front 37

All that remains on a branch after a leaf falls off

Back 37

Leaf scar

Front 38

Tree's living, functioning wood

Back 38

sapwood

Front 39

An abnormal tree growth caused by insects

Back 39

Gall

Front 40

A tree that produces male and female reproductive parts on separate trees is ____.

Back 40

Dioecious

Front 41

Scientist crossbreed trees with desirable characteristics to develop ____ that are more insect resistant and produce better wood than normal trees.

Back 41

supertrees

Front 42

A tree's increase in diameter is ____ growth.

Back 42

Secondary

Front 43

An ____ forest is one that has not been influenced by a man where are used for timber.

Back 43

Old-growth

Front 44

Thick, small leaves at the top of trees are ___.

Back 44

Sun leaves

Front 45

One layer of springwood and one layer of summerwood form an ____.

Back 45

Annual growth ring

Front 46

ESSAY: Explain three important environmental functions of forest.

Back 46

Forest assist in photosynthesis to produce oxygen. Forrest increase the ability of land to hold water. Forest filter and regulate the earth's water supply, helping prevent flooding and erosion.

Front 47

Foresters deliberately setting fire to a for this under control conditions

Back 47

prescribed burning