Midterm

Question 1

Dendrology is?

Answer 1

The study of trees involving: Identification Classification Nomenclature Geographic ranges Silvicultural Requirements and Values

Question 2

What is a tree?

Answer 2

A woody plant. At maturity is 20 feet or more in height. Single trunk unbranched for several feet. Well defined foliage mass or crown.

Question 3

Taxonomy

Answer 3

Identification Classification Nomenclature

Question 4

Identification

Answer 4

Based on morphological characteristics (leaves, bark, fruit, etc).

Question 5

Classification

Answer 5

Ordering items into a hierarchy of inclusive groups.

Question 6

Nomenclature

Answer 6

Common and scientific names.

Question 7

Gymnosperms

Answer 7

“Naked seed” (pine trees).

Question 8

Angiosperms

Answer 8

“Covered seed” (Has flowers, fruits with seeds).

Question 9

As the zygote grows into the embryo, the first leaves of the young sporophyte develop and are called

Answer 9

Cotyledons (seed leaves)

Question 10

Angiosperms are divided into

Answer 10

Monocots and dicots

Question 11

Has one cotyledon (corn, lily, etc)

Answer 11

Monocots

Question 12

Has two cotyledons (bean, oak, etc)

Answer 12

Dicots

Question 13

Products from Lauraceae Family

Answer 13

Linaloa oil - expensive perfume Camphor -Campho-Phenique (wood chips) Cinnamon - spices Avocado -guacamole Bay leaves - cooking (flavoring) Sassafras tea – flavored oils

Question 14

Most important hardwood timber species

Answer 14

Sweetgum

Question 15

Hardwoods are ______sperms.

Answer 15

Angiosperms

Question 16

Softwoods are ______sperms.

Answer 16

Gymnosperms

Question 17

Male sex organs-

Answer 17

Stamens

Question 18

Female sex organs-

Answer 18

Carpel

Question 19

Stamens are composed of

Answer 19

anther – organ that produces pollen

Question 20

Ovary is the

Answer 20

enlarged basal portion of carpel that contains the ovules

Question 21

Stigma is the

Answer 21

receptive portion of the carpel for pollen grains to adhere

Question 22

Monoecious

Answer 22

male and female flowers are found on a single individual

Question 23

Dioecious

Answer 23

male flowers are on one plant and female flowers are on another plan

Question 24

Indehiscent husks (Juglans)

Answer 24

shell does not split, corrugated

Question 25

Husk dehiscent (Carya)

Answer 25

opening, smooth

Question 26

Most highly valued wood of N.A. hardwoods

Answer 26

Juglandaceae

Question 27

Juglan's pith

Answer 27

chambered

Question 28

Carya's pith

Answer 28

solid

Question 29

Common name for Juglans cinerea?

Answer 29

Butternut

Question 30

What is the scientific name of English walnut?

Answer 30

Juglans regia

Question 31

What is the common name of Carya laciniosa?

Answer 31

Shellbark Hickory

Question 32

True Hickories

Answer 32

Mostly 7 leaflets or \< Unwinged fruit Imbricate (overlapping) bud

Question 33

Pecan Hickories

Answer 33

Mostly \> 7 leaflets Winged fruit (ridges on husk) Valvate bud (meeting at the edges (bud scales) not overlapping)

Question 34

Most important group of angiosperms in North America producing lumber, mast, and ornamentals.

Answer 34

Fagaceae

Question 35

What is the "Carver's Tree"?

Answer 35

American Beech

Question 36

White Oaks

Answer 36

Leaf lobes rounded, lacking bristle tips Acorns mature in one year Inner acorn wall glabrous Wood with tyloses Seed sweet

Question 37

Red Oaks

Answer 37

Leaf lobes pointed, bristle tipped Acorns mature in two years Inner acorn wall pubescent Wood lacking tyloses Seed bitter

Question 38

Used in building US frigates and other naval vessels

Answer 38

Live Oak, dense wood resisted cannonballs

Question 39

Xylem

Answer 39

Wood of tree

Question 40

Phloem

Answer 40

Inner bark of the tree

Question 41

Wood is formed from ______ growth.

Answer 41

secondary

Question 42

Primary growth

Answer 42

increase in length

Question 43

Secondary growth

Answer 43

increase in girth

Question 44

Staminate cones

Answer 44

male cones

Question 45

Ovulate cones

Answer 45

female cones

Question 46

Pollen

Answer 46

male gametophyte

Question 47

Ovules

Answer 47

female gametophyte

Question 48

Heterosporous

Answer 48

forms two different types of spores (micro- and megaspores; male and female spores)

Question 49

pollen grains contain tube nucleus and generative cell (2 sperm nuclei)

Answer 49

male

Question 50

female gametophyte contains egg and 2 polar nuclei

Answer 50

Female

Question 51

Endosperm

Answer 51

stored food tissue – for the embryo to grow

Question 52

Leaflets on shagbark

Answer 52

5

Question 53

Leaflets on shellbark

Answer 53

7

Question 54

Tyloses

Answer 54

outgrowths on parenchyma cells of the xylem vessels (carries water and minerals thru the plant)