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Plants and Society, 3/e
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The Grasses
Quiz
1
1. Cereals, such as wheat, oats, and corn, are the edible grains of grasses.
A)
True
B)
False
2
2. _______ allow grasses to propagate vegetatively.
A)
a. Prop roots
B)
b. Culms
C)
c. Rhizomes
D)
d. Chaff
3
3. Grass flowers are incomplete because ________ are either lacking or greatly reduced.
A)
a. sepals and petals
B)
b. stigmas
C)
c. lemnas
D)
d. aleurone layer
4
4. The enzymes contained in the aleurone layer break down stored food during the germination process.
A)
True
B)
False
5
5. Which part of the wheat grain is removed to produce white flour?
A)
a. endosperm
B)
b. germ
C)
c. bran
D)
d. all of the above
E)
e. b and c are correct
6
6. Modern wheat is the result of hybridization between einkorn wheat and a primitive tetraploid oat species.
A)
True
B)
False
7
7. In which region is winter wheat grown commercially?
A)
a. Montana
B)
b. Canada
C)
c. Texas
D)
d. South Dakota
8
8. Elasticity created by the gluten protein complex is important commercially because it prohibits gas from accumulating in bread.
A)
True
B)
False
9
9. Corn differs from wheat in that its grains lack bracts and it has separate pistillate and staminate flowers.
A)
True
B)
False
10
10. Hard starch has a higher amount of _______ than soft starch.
A)
a. gluten
B)
b. amylose
C)
c. bran
D)
d. amylopectin
11
11. The term “jumping genes” refers to the discovery by Barbara McClintock that chromosomal fragments move at random from one kernel of corn to another kernel.
A)
True
B)
False
12
12. The symbiosis between azolla and
Anabaena azollae
is beneficial to rice cultivation because
A)
a. it reduces the need for costly fertilizer.
B)
b. the cyanobacterium fixes atmospheric nitrogen.
C)
c. it adds nitrogen to the rice paddy.
D)
d. all of the above.
E)
e. a and c are correct.
13
13. Researchers hope that “golden rice” will help reduce vitamin A deficiency and reduce blindness in developing nations.
A)
True
B)
False
14
14. Which grain is used in the production of malt for brewing beer?
A)
a. rye
B)
b. millet
C)
c. oats
D)
d. barley
15
15. Crops such as legumes and grasses that are used to feed livestock are called
A)
a. forage.
B)
b. compost.
C)
c. millet.
D)
d. lawn grasses.
16
16. The term “green carpet” refers to the nutrient-rich humus that results from the composting of grass clippings and other plant refuse.
A)
True
B)
False
17
17. Which grass has a fine texture and beautiful color and commonly grows in the northern U.S.?
A)
a. Zoysia
B)
b. Kentucky bluegrass
C)
c. Tall Fescue
D)
d. Bahia grass
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