Quiz and exam

Question 1

A natural or synthetic macromolecule comprised of repeating units of monomers.

Answer 1

Polysaccharides

Question 2

The process of breaking a complex carbohydrate such as starch or cellulose into simple sugars

Answer 2

Saccharification

Question 3

Term use to denote a 5-carbon sugar derived from hemicellulose.

Answer 3

Arabinose

Question 4

All biological materials and derivatives other than timber, which are extracted from forests for human use.

Answer 4

NTFP

Question 5

The inorganic and organic residue remaining after combustion of wood or unbleached wood fiber.

Answer 5

Wood Ash

Question 6

Distinct alternating light and dark bands of tissues encircling around the core/pith of wood.

Answer 6

Growth rings

Question 7

This type of cellulase system in which cellulose is degraded in an aerobic environment in mixture of extracellular cooperative enzymes.

Answer 7

Non-complexed

Question 8

Term used to describe a salt formed by the combination of acetic acid with base.

Answer 8

Acetate

Question 9

Small molecules which may be joined together in a repeating fashion to form more complex molecules called polymers.

Answer 9

Monomers

Question 10

Wood waste is accounted ___ % of the overall NRE estimates of the country.

Answer 10

44

Question 10

Soft tissues of small and thin-walled cells mainly for storage and secondarily for food distribution

Answer 10

Parenchyma

Question 10

This are type of forest products that are used in raw form

Answer 10

Primary wood products

Question 11

This is a term used to describe tree exudates that comes specifically from mangrove spp and oak spp.

Answer 11

Tannins

Question 12

Guaiacyl propane monomers are derived from

Answer 12

coniferyl alcohol

Question 13

These are used to remove most of the polysaccharides from ball-milled wood meal before aqueous dioxane extraction.

Answer 13

Enzyme Lignin

Question 14

A mixed exter thermoplastic derivative of cellulose acetate that contains both acetate and butyrate functional groups.

Answer 14

Acetate compound butyrate

Question 15

Angiosperm contains sinapyl alcohol, when isolated, what type of propane it produces?

Answer 15

equal proportions of :
guaiacyl propane units
syringyl propane units

Question 16

Outgrowths on parenchyma cells of xylem vessels of secondary heartwood

Answer 16

Tyloses

Question 17

Strand of primary tissues found within the stem of a plant and consisting of xylem and phloem, along with cambium.

Answer 17

Vascular bundles

Question 18

A polysaccharide made of a-D-Glucose units, bonded to each other through a (1-4) glycosidic bonds.

Answer 18

Amylose

Question 19

One type of perforation plate with multiple perforations of net-like appearance, as in wood of marang.

Answer 19

Reticulate

Question 19

This type of product is obtained from pine spp., distillation of resin produces gum turpentine and gum resin.

Answer 19

Naval stores

Question 19

Type of tissues concerned with transversed conduction of food and water.

Answer 19

Wood Rays

Question 20

An axial series of cells that have fused to form a tube-like structure of indeterminate length.

Answer 20

Vessels

Question 21

Woody plants in the tropics resembling tree ferns and palms

Answer 21

cycadales

Question 22

Type f specialized tisuue that carries out different functions based on the cell types and location of plant.

Answer 22

Ground tissue

Question 23

Type of tissue that transports water, minerals, and sugars to different parts of the plant.

Answer 23

Vascular tissue

Question 24

It refers to the arrangement/orientation of the wood elements with the respect to the longitudinal axis.

Answer 24

Texture

Question 25

Refers to the size and proportional number of woody elements. Description of texture in relation to the size of wood pores may include porous, fine porous and diffuse porous among others.

Answer 25

Growth rings

Question 26

It is insoluble in any solvent including water.

Answer 26

Proto Lignin

Question 27

A polymerization process in which lignin macromolecules grow from monomers via free radical coupling mechanisms

Answer 27

Lignification

Question 28

The non-structural components of wood, concentrated in the heartwood and are often produced by the standing tree as a defensive compounds to environmental stress.

Answer 28

Extractives

Question 29

Collective term that used to described the tree exudates

Answer 29

Resins

Question 30

Considered as a primitive element of xylem consisting of a single elongated cell with pointed ends. It conducts water/solutes and provide mechanical support.

Answer 30

Tracheids

Question 31

Living support tissues with irregular walls, it is extremely plastic the cells and thus adjust to increased growth of the plant.

Answer 31

Collenchyma

Question 32

This is unique to conifers and referred to as resin ducts.

Answer 32

Resin canals

Question 33

The most abundant type of parenchyma cells found in both gymnosperms and angiosperms.

Answer 33

Ray Parenchyma

Question 33

It is a part of the dermal tissue that functions as extensions of the root epidermal tissue and its primary function is to absord water and other nutrients fro the soil.

Answer 33

Root hairs

Question 34

One type of cellulose isolation in which enzymes are used in hydrolysis.

Answer 34

Enzymatic Hydrolysis

Question 35

They consist of two monosaccharides linked by a single glycosidic bond example is cellobiose.

Answer 35

Disaccharides

Question 36

Matrix substance of the cell wall composed of two types of sugar molecules: xylans and glucomannans.

Answer 36

Hemicellulose

Question 37

Any of the class of simple sugars whose molecules contain six carbon atoms, such as glucose and fructose.

Answer 37

Hexose

Question 38

Produced as a part of natural energy transfer and carbon cycle specially by wood degrading fungi and bacteria.

Answer 38

CO2 or cellulolytic

Question 39

Three elements that comprises cellulose

Answer 39

Carbon (C) Hydrogen (H) Oxygen (O)

Question 40

Where can we find lignin in plants?

Answer 40

Primary wall Secondary Wall Middle Lamella Epidermal Wall Hypodermal wall

Question 41

4 methods of isolating lignin

Answer 41

Milled Wood Lignin Enzyme Lignin Alkali Liginin Organosolve Lignin

Question 42

Primary building units of lignin

Answer 42

Sinapyl alcohol Cinnamyl alcohol P-coumaryl alcohol Coniferyl alcohol

Question 43

3 kinds of sugar found in most cellulose

Answer 43

Disaccharide Polysaccharide Monosaccharide

Question 44

3 intermediate units that are made from cellulose

Answer 44

cellobiose cellotriose cellotetraose

Question 45

Three families under order gnetales

Answer 45

Welwitschiaceae Ephedraceae Gnetaceae

Question 46

Four general plant classification

Answer 46

Thallophytes Spermatophytes Pteridophytes Bryophytes