Forestry

pulp is the major raw material used in papermaking

• True

• False

Papers are made with the pulp of the woods

• True

• False

Pulp and paper are made from ………………and other plant materials

• a) Cellulose

• b) Fibres

• c) cellulosic fibers

The pulping process is aimed at removing …………..without loosing fiber strength

• a) Lignin

• b) Pectin

• c) Tannin

Hemicellulose plays an important role in fiber-to-fiber bonding in papermaking.

• True

• False

In general, the ………… yield long and strong fibers that contribute strength to paper and they are used for boxes and packaging

• a) Soft wood

• b) Hard wood

Forest ……………. occurs when forest ecosystems lose their capacity to provide important goods and services to people and nature.

• a) degradation

• b) product

• c) Major product

Many insects and disease will not seriously affect a tree until it has reached some point in the…………………..

• a) stress cycle

• b) injury

• c) disease

Some insects are actually attracted to stressed trees by ………………released into the air by trees in response to stress.

• a) chemical signals

• b) Appearance

• c) Disease

Some of these sucking insects inject ………………into plants.

• a) water

• b) food

• c) salivary fluids