Question 1

________ is primarily grown today to make the malt for brewing of beer.

Accepted Answer

The answer of ________ is primarily grown today to make...

Question 2

In rice cultivation,what is winnowing?

Accepted Answer

A) draining of the fields to prepare for harvesting. 
B) harvesting the plant using sickles. 
C) separating the grain from the chaff. 
D) freeing the grain from the outer bracts. 
E) None of the above are correct.

Question 3

Which of the following is correct?

Accepted Answer

A) Durum wheat is grown primarily in the northern United States,Canada,and southern Europe. 
B) Wheat cultivars can be categorized by their growing conditions and their protein content. 
C) Bread often supplies more than half of the dietary calories to people throughout the world. 
D) Applying heat to the grain makes the glumes easy to remove but also changes the gluten,making it "flat bread." 
E) All of the above statements are correct.

Question 4

The growth of rice in paddies is enhanced by the nitrogen-producing species,

Accepted Answer

A) Anabaena azollae 
B) Oryza sativa 
C) Aegilops tauschi 
D) Triticum aestivum 
E) Zea mays

Question 5

This type of maize has a core of soft starch surrounded by hard starch and a large percentage of water in endosperm cells.This type of maize is called ________.

Accepted Answer

A) flint 
B) dent 
C) waxy 
D) popcorn 
E) flour

Question 6

The 1970 Southern leaf blight wide-spread epidemic was blamed on which of the following?

Accepted Answer

A) the use of GMOs. 
B) extreme rainfall caused by global warming. 
C) an extreme drought caused by global warming. 
D) the use of disease-susceptible male-sterile lines. 
E) organic farming techniques.

Question 7

How is teosinte different from maize?

Accepted Answer

A) Teosinte has terminal staminate flowers. 
B) Teosinte has lateral carpellate flowers. 
C) Teosinte has a diploid number of 20. 
D) Teosinte kernels are surrounded by a hard fruit case. 
E) Teosinte differs from maize in all the above.

Question 8

The short grain rice variety that is sticky when cooked is called which of the following:

Accepted Answer

A) indica 
B) japonica 
C) javanica 
D) sinensis 
E) none of the above

Question 9

Which of the following plants is not a member of the Poaceae?

Accepted Answer

A) wheat 
B) rice 
C) maize (corn) 
D) oats 
E) All of the above are members of the Poaceae

Question 10

Which of the following essential vitamins is not missing in whole-grain wheat?

Accepted Answer

A) A 
B) B3 
C) C 
D) B12 
E) None of the above are correct.

Question 11

Of particular concern to wheat farmers worldwide is a variety of the stem rust fungus known as which of the following?

Accepted Answer

A) Uk66 
B) Ur91 
C) Ug99 
D) Gr76 
E) Nk92

Question 12

Which of the following statements is correct?

Accepted Answer

A) Until recently,the United States was committed to clean,renewable energy sources. 
B) In 2017,the United States produced nearly 60 percent of the world's supply of ethanol for fuel. 
C) Some scientists claim that the energy efficiency of growing corn for fuel may even result in an energy loss (considering the use of fertilizer,etc. ) 
D) Ecologists are concerned about the potential land use changes that could indirectly threaten the Amazonian rain forests and the Pantanal of Brazil because of the expansion of its biofuel program. 
E) All of the above are correct.

Question 13

Which of the following statements about rice is(are)correct?

Accepted Answer

A) Rice is a large,multi-stalked annual. 
B) A stalk of rice has a terminal panicle bearing grains surrounded by bracts. 
C) Rice has characteristic air chambers in the stem that provide for the diffusion of gases throughout the plant. 
D) There are thousands of varieties of Oryza sativa,which require different growing conditions and may vary in color,shape,size,and aroma. 
E) All of the above are correct statements.

Question 14

One unusual feature about the female flowers of maize is that they have a very long style.

Accepted Answer

A) True 
 B)False

Question 15

Our present-day bread wheats are thought to be hybrids of einkorn wheat and goat grass.

Accepted Answer

A) True 
 B)False

Question 16

Which of the following grains is a C4 plant that vegetatively looks similar to maize?

Accepted Answer

A) Secale cereale 
B) Hordeum vulgare 
C) Zea mays 
D) Sorgum bicolor 
E) Avena sativa

Question 17

This variety of rice is the oldest variety and is not sticky when cooked.This variety of rice is called ________.

Accepted Answer

A) indica 
B) javanica 
C) japonica 
D) amaroo 
E) wild rice

Question 18

Which of the following is not a characteristic of the Poaceae?

Accepted Answer

A) Leaves are alternate. 
B) Culms are hollow at the node. 
C) Leaves exhibit netlike venation. 
D) Fibrous root systems are dominate. 
E) Many have horizontal stems,such as aboveground stolons or underground rhizomes.

Question 19

The outer wall of a grass grain is the ________.

Accepted Answer

A) chaff 
B) aleurone layer 
C) coleoptile 
D) germ 
E) bran

Question 20

Which of the following statements is not correct?

Accepted Answer

A) The domestication of wheat involves hybridization and resulting polyploidy of several species of wheat. 
B) Molecular studies indicate that goat grasses should remain in the genus Triticum. 
C) Triticum monococcum is a diploid species of wheat commonly known as einkorn wheat. 
D) Emmer wheat is a tetraploid. 
E) Tetraploid wheat evolved naturally about 100,000 years ago.

Exam 12: The Grasses