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Flashcards in Chapter 21 Deck (31)
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1
Q

Other plant families besides the grass and legume families can have crops of economic importance.

A

True

2
Q

Potatoes grow best in heavy clay soils.

A

True

3
Q

Tobacco crops are generally not allowed to flower and produce seed.

A

True

4
Q

The use of tobacco in its many forms can cause health problems such as lung cancer, heart disease, emphysema, and mouth cancers.

A

True

5
Q

Sweet potatoes can be grown as perennials in tropical areas.

A

True

6
Q

True yams have modified roots like sweet potatoes.

A

False

7
Q

Sugar beets contain 50 percent sugar at harvest.

A

False

8
Q

Sugar cane is the source of 50 percent of the world production of sugar.

A

True

9
Q

The fiber from cotton is always white.

A

False

10
Q

Russian scientists were responsible for breeding large heads and high seed production in sunflowers.

A

True

11
Q

Tobacco growers take actions to promote flowering when growing tobacco.

A

False

12
Q

Opium poppy is a source or legal and illegal drugs.

A

True

13
Q

White potatoes originated in:

A. Europe
B. Asia
C. North America
D. South America

A

D. South America

14
Q

Which of the following crops is NOT in the nightshade family?

A. sweet potato
B. white potato
C. tobacco
D. tomato

A

A. sweet potato

15
Q

The leading producer of sweet potatoes is:

A. Asia
B. North America
C. South America
D. Africa

A

A. Asia

16
Q

Tapioca is made of:

A. true yams
B. turnip
C. Jerusalem artichoke
D. cassava

A

D. cassava

17
Q

Which of the following is native of North America?

A. true yams
B. turnip
C. Jerusalem artichoke
D. cassava

A

C. Jerusalem artichoke

18
Q

Taro is grown for which plant part?

A. leaves
B. corms
C. seeds
D. tubers

A

B. corms

19
Q

Cassava is which of the following?

A. cool season annual
B. perennial woody shrub
C. warm season annual
D. herbaceous perennial

A

B. perennial woody shrub

20
Q

Seeds are produced in sugar beet in the:

A. first year
B. second year
C. third year
D. fourth year

A

B. second year

21
Q

Plantains are which type of crop?

A. sugar crop
B. oil crop
C. grain crop
D. starch crop

A

D. starch crop

22
Q

Opium poppy is grown for which plant parts?

A. sap and seeds
B. sap, seeds, and roots
C. seeds only
D. sap only

A

D. sap only

23
Q

Sugar cane is native to which of the following regions?

A. the Caribbean
B. the South Pacific and India
C. China
D. South America

A

B. the South Pacific and India

24
Q

The leading fiber crop in the world is:

A. flax
B. cotton
C. hemp
D. sisal

A

B. cotton

25
Q

Where are the fibers of the cotton found?

A. in the stem
B. in the leaves
C. attached to the roots
D. attached to the seeds

A

D. attached to the seeds

26
Q

Where are the fibers of flax found?

A. in the stem
B. in the leaves
C. attached to the roots
D. attched to the seeds

A

A. in the stem

27
Q

The cloth produced from flax is:

A. polyester
B. linen
C. satin
D. canvas

A

B. linen

28
Q

Flax is which of the following?

A. cool season annual
B. cool season perennial
C. warm season annual
D. warm season perennial

A

C. warm season annual

29
Q

Which of the following is NOT used as a fiber crop?

A. flax
B. cotton
C. hemp
D. sunflower

A

D. sunflower

30
Q

Which of the following is not an oil crop?

A. cotton
B. canola
C. safflower
D. none of these answers is correct

A

D. none of these answers is correct

31
Q

Canola is which of the following?

A. cool season annual
B. cool season perennial
C. warm season annual
D. warm season perennial

A

A. cool season annual