Deck 12: The Grasses

Question 1

Which species of wheat is used for producing bread flour?

A)Triticum aestivum
B)Triticum durum
C)Triticum monococcum
D)Triticum turgidum

Answer 1

A

Question 2

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

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

Answer 2

C

Question 3

The outer wall of a grass grain is the

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

Answer 3

E

Question 4

Which of the following is an incorrect match between the wheat species and its common name?

A)Triticum monococcum - einkorn wheat
B)Triticum turgidum - emmer wheat
C)Triticum durum - bread wheat
D)all of these wheat species are incorrectly matched with their common names

Question 5

Which of the following species of wheat is tetraploid?

A)Triticum aestivum
B)Triticum durum
C)Triticum monococcum
D)Triticum turgidum

Question 6

Which of the following is not a characteristic of grass flowers?

A)usually three stamens
B)enlarged,feathery stigmas
C)surrounding each flower is a lemma and palea
D)flowers are complete
E)single ovule in the ovary

Question 7

Which of the following terms is not matched with its definition?

A)stolon - underground horizontal stem
B)lemma - outer bract surrounding a grass flower
C)culm - the stem of a grass plant
D)awn: slender bristle extending from a lemma
E)glume - a bract beneath a spikelet

Question 8

In whole-grain products,what part of the grain is removed?

A)chaff
B)germ
C)endosperm
D)bran
E)more than one of these

Question 9

All of the following describe hard wheat except one.Choose the exception.

A)higher gluten than soft wheat
B)used mainly in making bread
C)grown in areas with limited rainfall
D)lower protein content than soft wheat

Question 10

White flour is processed

A)chaff.
B)germ.
C)endosperm.
D)bran.
E)more than one of thesE.

Question 11

The bracts surrounding a grass grain are called

A)lemmA.
B)chaff.
C)palea.
D)glumes.
E)awns.

Question 12

Which of the following is the most commonly grown species of wheat?

A)Triticum aestivum
B)Triticum durum
C)Triticum monococcum
D)Triticum turgidum

Question 13

What percentage of the world's vegetation are members of the Poaceae?

A)5
B)10
C)15
D)20
E)25

Question 14

The embryo and the coleoptile and coleorhiza sheaths are the

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

Question 15

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

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

Question 16

Grasses are

A)eudicots
B)monocots
C)paleodicots
D)lycopods
E)gymnosperms

Question 17

If a grass seed geminates,the ______ provides enzymes that break down endosperm.

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

Question 18

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

A)leaves alternate
B)culms are hollow at the node
C)leaves exhibit netted venation
D)fibrous root systems
E)many have horizontal stems

Question 19

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

A)A
B)B₃
C)B₁₂
D)C

Question 20

Botanically,what is the silk of maize?

A)the stamen filaments
B)the carpel styles
C)the carpel ovaries
D)the stamen anthers

Question 21

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

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

Question 22

The most common corn grown by Native Americans in northern North America was

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

Question 23

The color and patterns seen in Indian corn are evidence of

A)evolution.
B)transduction.
C)transposons.
D)inbreeding.
E)artificial selection.

Question 24

Approximately,85% of the corn genome consists of

A)transposons.
B)introns.
C)viruses.
D)inserted deletions.
E)exons.

Question 25

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

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

Question 26

Which is the best environment for growing rice?

A)high-elevation mountains.
B)lowland tropical areas periodically flooded.
C)cool,moist climates with sandy soils.
D)former lake beds in dry climates.

Question 27

This staple crop grows to be 1 meter tall,flowers are in a panicle at tip of stalk,grains surrounded by bracts,and air chambers in the stalk.This staple crop is

A)maize.
B)barley.
C)rice.
D)wheat.

Question 28

In a grain the highest amount of starch would be found in the:

A)seed coat
B)endosperm
C)embryo
D)bran
E)aleurone layer

Question 29

The 1970 Southern leaf blight wide-spread epidemic was blamed on

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 30

Most corn grown in the United States is used for

A)flour and cooking oil.
B)biofuel.
C)making liquor and beer.
D)popcorn and directly eating as corn-on-the-cob.
E)animal food.

Question 31

In rice cultivation,what is winnowing?

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

Question 32

The most common corn grown in the Corn Belt of the United States is

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

Question 33

The many colors of Indian corn result from pigments in the pericarp and

A)cotyledons
B)coleoptile
C)aleurone layer
D)coleorhiza

Question 34

Polyploidy has had a significant impact on the evolution of modern:

A)corn
B)rice
C)wheat
D)potato
E)soybeans

Question 35

Which of the following is currently believed to be the ancestor of modern corn?

A)triticale
B)triticum
C)tripsacum
D)teosinte

Question 36

How is teosinte different from maize?

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)in all of these teosinte differs from maize

Question 37

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

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

Question 38

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

A)indicA.
B)javanica.
C)japonica.
D)amaroo.
E)wild ricE.

Question 39

What part of the maize plant prevents seed dispersal?

A)the tassel
B)the husk
C)the silk
D)the fruits

Question 40

Which of the following species is not correctly paired with its common name?

A)Avena sativa - oat
B)Triticum aestivum - wheat
C)Oryza sativa - rice
D)Secale cereal - goat grass
E)Hordeum vulgare - barley

Question 41

A hybrid crop called Aegilops is a cross between wheat and rye.

Question 42

_______ is the cereal grain which feeds the most people worldwide.

Question 43

The short grain rice variety which is sticky when cooked is:

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

Question 44

The condition in which an organism has more than the diploid number of chromosomes is known as _______.

Question 45

Wheat is native to the North America.

Question 46

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

Question 47

The protein in wheat flour that provide elasticity to dough and permit breads and cakes to rise is gluten

Question 48

_______ is a tetraploid wheat species that produces a hard starch ideal for making pasta and semolina flour.

Question 49

The oldest forms of domesticated wheat are ______ and emmer.

Question 50

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

Question 51

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

Question 52

Sugarcane and bamboo are in the same botanical family as wheat;the scientific name of this family is _________.

Question 53

The embryo of a grain is referred to as the ________.

Question 54

Goat grasses played an important role in the evolution of:

A)corn
B)rice
C)wheat
D)potatoes
E)peanuts

Question 55

A major aim of current wheat breeding programs is resistance to _______ disease.