Question 1

Fibers used in making rope are_______ fibers.

Accepted Answer

Fibers used in making rope are cordage fibers. Cordage fibers are specifically chosen for their strength, flexibility, and durability, making them ideal for rope-making applications. Textile fibers are more commonly used for fabrics, filling fibers are used for insulation or padding, and mineral fibers are used for heat resistance and insulation in products like asbestos.

Question 2

Which of the following terms is not matched correctly?

Accepted Answer

Soft fibers are generally derived from fruit or stem tissues, not from seed coats.

Question 3

Denim jeans were originally made from

Accepted Answer

Hemp was the original material used to make denim jeans.

Question 4

Which of the following is a type of basket for keeping bees?

Accepted Answer

A skep is a traditional type of woven basket used for keeping bees. The other options listed are not types of beekeeping baskets.

Question 5

The RSW1 gene codes for the production of

Accepted Answer

The RSW1 gene is involved in the synthesis of cellulose, a key component of plant cell walls.

Question 6

The very next process after cotton is picked is

Accepted Answer

Gin is the machine that separates the seeds from the cotton, and this process is called ginning. So, ginning is the very next process after cotton is picked.

Question 7

Flax fibers originate from

Accepted Answer

Flax fibers come from the stem of the flax plant, specifically from the phloem, which is the inner bark layer. The fibers are extracted through a process called retting, where the stem is soaked in water to allow the fibers to separate from the rest of the stem tissue.

Question 8

Flax fibers are extracted using the ________ process.

Accepted Answer

Flax fibers are extracted using the process of retting, which involves soaking the flax stalks in water to allow the natural decomposition process to break down the pectin that binds the fibers to the stalk. This method is preferred over ginning, which is used to extract fibers from cotton. Finishing, coiling, and sizing are processes used in textile production but not in the extraction of flax fibers.

Question 9

Gossypium spp.are the source of

Accepted Answer

Gossypium spp. is commonly known as cotton plant and is the source of cotton fiber.

Question 10

Which of the following substances was not used in the standard method in 18^th century England for bleaching cotton fibers?

Accepted Answer

Egg whites were not used in the standard method in 18th century England for bleaching cotton fibers. Lye, sour milk, and cow dung were commonly used for this purpose.

Question 11

The most valuable fibers for making cloth,rope,and paper are

Accepted Answer

Pure cellulose is the most valuable fiber for making cloth, rope, and paper because it has high tensile strength, is flexible, and can be easily processed into different forms. Lignin and pectin are not as strong or flexible as cellulose, and a combination of these fibers with cellulose can reduce the quality of the resulting products. Pure lignin is not suitable for making cloth or paper but can be used to make adhesives and binders. Pure pectin is mainly used in the food industry as a gelling agent.

Question 12

A process that employs microbes to extract fibers from materials is

Accepted Answer

Retting is a process that uses microorganisms to decompose pectins, lignins, and other impurities in plant fibers such as flax, hemp, and jute. This process loosens the fibers from the stem or stalk, making them easier to extract.

Question 13

In cotton production _______ makes cotton fabric softer and increases its sheen.

Accepted Answer

The answer of In cotton production _______ makes cotton fabric...

Question 14

The capsules of cotton plants are more commonly called

Accepted Answer

Capsules of cotton plants are referred to as bolls.

Question 15

Which of the following is not true about ramie?

Accepted Answer

Chlorine is not typically used to bleach ramie fibers; instead, other bleaching agents are preferred to maintain fiber integrity.

Question 16

Which of the following is a true statement about Bt cotton?

Accepted Answer

Bt cotton produces an insect toxin (gene Cry1Ac) that is effective against several bollworm pests of cotton. Because of this, it has greatly reduced the use of chemical pesticides. In India, the use of Bt cotton has been shown to increase yields dramatically. Therefore, all of these statements are true about Bt cotton.

Question 17

The fibers of cotton are extensions from the

Accepted Answer

Cotton fibers are extensions from the seed coats of the cotton plant.

Question 18

Which of the following statements is not true about Eli Whitney's invention?

Accepted Answer

Eli Whitney's invention, the cotton gin, actually increased the demand for slave labor because it made cotton processing more efficient and profitable, leading to an expansion of cotton plantations that relied on slave labor.

Question 19

The term,muslin,refers to

Accepted Answer

Muslin is a type of plain-woven cotton fabric that is often used for clothing, curtains, and other household items. It originated in Bangladesh but is now produced in many countries.

Question 20

In this basket-making technique,warps radiate out from the center to create the framework of the basket.This basket-making technique is

Accepted Answer

The answer of In this basket-making technique,warps radiate out from...

Quiz 18: Materials: Cloth, Wood, and Paper