Lecture 9 Practice

It is the plant tissue used to make bast fibers.

Xylem cells only have primary cell walls.

Xylem cells have thick secondary cell walls.

Xylem moves photosynthate (sugars) throughout the plant body.

Xylem moves water throughout the plant body.

Most retting is done using heavy nighttime dew and warm daytime temperatures.

Water retting can be done in natural bodies of water or in tanks.

Tank retting is usually a slower process than natural water retting.

Water retting is the most commonly used form of retting.

Most economically important non-food plant

It grows best in cool weather and low water.

Only one species of cotton is used to produce fibers.

Cotton grows well in parts of California if it is irrigated.

The labor of enslaved people once made the cotton industry the backbone of the US economy.

Provides bast fibers that are 3 -10 feet long.

Fibers have been used for sails, tents, covered wagons, backpacks, and painting canvas.

Provided the original fabric for Levi blue jeans.

Citizens of the US were encouraged to grow hemp to help with the war effort during WWII.

Fibers from Agave leaves can be used to make sisal.

Fibers from the leaves of plants in the banana family are used in the Philippines to make things like clothing, marine rope, and envelopes.

The exocarp of coconuts is used to produce coconut coir.

Linen fibers have been used by humans for at least 10,000 years.