Chapter 21 Flashcards
Other plant families besides the grass and legume families can have crops of economic importance.
True
Potatoes grow best in heavy clay soils.
True
Tobacco crops are generally not allowed to flower and produce seed.
True
The use of tobacco in its many forms can cause health problems such as lung cancer, heart disease, emphysema, and mouth cancers.
True
Sweet potatoes can be grown as perennials in tropical areas.
True
True yams have modified roots like sweet potatoes.
False
Sugar beets contain 50 percent sugar at harvest.
False
Sugar cane is the source of 50 percent of the world production of sugar.
True
The fiber from cotton is always white.
False
Russian scientists were responsible for breeding large heads and high seed production in sunflowers.
True
Tobacco growers take actions to promote flowering when growing tobacco.
False
Opium poppy is a source or legal and illegal drugs.
True
White potatoes originated in:
A. Europe
B. Asia
C. North America
D. South America
D. South America
Which of the following crops is NOT in the nightshade family?
A. sweet potato
B. white potato
C. tobacco
D. tomato
A. sweet potato
The leading producer of sweet potatoes is:
A. Asia
B. North America
C. South America
D. Africa
A. Asia
Tapioca is made of:
A. true yams
B. turnip
C. Jerusalem artichoke
D. cassava
D. cassava
Which of the following is native of North America?
A. true yams
B. turnip
C. Jerusalem artichoke
D. cassava
C. Jerusalem artichoke
Taro is grown for which plant part?
A. leaves
B. corms
C. seeds
D. tubers
B. corms
Cassava is which of the following?
A. cool season annual
B. perennial woody shrub
C. warm season annual
D. herbaceous perennial
B. perennial woody shrub
Seeds are produced in sugar beet in the:
A. first year
B. second year
C. third year
D. fourth year
B. second year
Plantains are which type of crop?
A. sugar crop
B. oil crop
C. grain crop
D. starch crop
D. starch crop
Opium poppy is grown for which plant parts?
A. sap and seeds
B. sap, seeds, and roots
C. seeds only
D. sap only
D. sap only
Sugar cane is native to which of the following regions?
A. the Caribbean
B. the South Pacific and India
C. China
D. South America
B. the South Pacific and India
The leading fiber crop in the world is:
A. flax
B. cotton
C. hemp
D. sisal
B. cotton
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
D. attached to the seeds
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. in the stem
The cloth produced from flax is:
A. polyester
B. linen
C. satin
D. canvas
B. linen
Flax is which of the following?
A. cool season annual
B. cool season perennial
C. warm season annual
D. warm season perennial
C. warm season annual
Which of the following is NOT used as a fiber crop?
A. flax
B. cotton
C. hemp
D. sunflower
D. sunflower
Which of the following is not an oil crop?
A. cotton
B. canola
C. safflower
D. none of these answers is correct
D. none of these answers is correct
Canola is which of the following?
A. cool season annual
B. cool season perennial
C. warm season annual
D. warm season perennial
A. cool season annual
