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Plant Biology Exam 1 > Bio 2 > Flashcards

Bio 2 Flashcards

1
Q

What is the name of the element represented by the symbol Mg?

A

Magnesium

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2
Q

What component of soil accounts for the dark color seen in soil that is considered desirable for growing plants?

A

Organic matter

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3
Q

Which of the following is not true about pore space in soil?

  • water travels through the pore space
  • oxygen diffuses through pore space
  • it comprises approximately 20%of soil
  • roots grow through pore space
A

-it comprises approximately 20%of soil

It actually comprises

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4
Q

What do Rhizobium do for legumes that is so beneficial?

A

Convert nitrogen gas to ammonium.

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5
Q

Why do Rhizobium want to be in a symbiotic relationship with legumes?

A

Because they get food (sugar) in return.

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6
Q

Nitrogen gas is:

A

Not available to plants.

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7
Q

Nitrate is:

A

A form or nitrogen can be peaches as well as be converted by some eubacteria to nitrogen gas.

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8
Q

Ammonium is:

A

A form of nitrogen that has a pistol e charge.

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9
Q

True or false: Mycorrhizal fungi are common in farm fields and gardens.

A

False

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10
Q

True or false: mycorrhizae have become much more abundant since humans switched to agriculture.

A

False

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11
Q

True or false: Ethnobotanist study the ethics of domesticating plants.

A

False they study how people of a particular culture and region make use of indigenous (native) plants.

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12
Q

True or false; agriculture began pretty much all around the world 10,000 years ago.

A

False, agriculture was around then just not all over the world.

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13
Q

Which of the following did not coincide with the beginning of agriculture?

  • religion, science,etc
  • domestication of plants
  • plant breeding
  • beginning of last ice age
A

-beginning of last ice age

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14
Q

True or false: Shattering had to be bred out of wild cereal crops so that the seed would stay in the seed head until the farmer can harvest it.

A

True

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15
Q

Which of the following is not a reason that botanists would use when arguing that plants domesticated humans?

  • providing plants with the essential mineral elements
  • widespread dispersal of plant populations
  • uniformity of plant populations
  • protection of plants from pests
A

-uniformity of plant populations

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16
Q

True or false: wheat was one of the first plants to be domesticated and its center of origins is the Middle East.

A

True

17
Q

True or false: shattering is desirable in domesticated crops.

A

False, they try getting rid of it

18
Q

True or false: feed barley is typically higher in protein than malting barley.

A

True

19
Q

The answer is “a grass plant grown for its seeds.” What is the question?

  • what is lysine?
  • what is a Poacea?
  • what is cereal?
  • what is a Fabacea?
A

-what is cereal?

20
Q

Why is soft white wheat the predominant wheat grown in eastern Washington?

A

Because dams in the Columbia a Snake River make it economically feasible to ultimately export wheat to Asia.

21
Q

Which of the following two grass crops are typically fed to livestock?

  • corn and barley
  • corn and rice
  • wheat and barley
  • wheat and rice
A

-corn and barley

22
Q

What is the significance of the rice and bean diet that so many people eat it?

A

It is an example of how humans can get essential amino acids from a plant based diet.

23
Q

Nutritionally, rice and beans are a good combination because they:

A

Have a good balance of methionine and lysine.

24
Q

True or false: meat consumption increase as affluence )the state of having a great deal of money; wealth.) increases.

A

True

25
Q

What is the significance of the Southern corn leaf blight which occurred in the 1970s?

A

It was a major example of why monocultures (the cultivation of a single crop in a given area.) are risky.

26
Q

What wild grass was our modern-day corn derived from?

A

Teosinte

27
Q

Which of the following is NOT a major problem facing the worlds farmers?

  • Increasing human populations
  • new pest problems
  • nitrogen fixation by Rhizobium (this should be italicized)
  • reduces water availability
A

-nitrogen fixation by Rhizobium (this should be italicized)

Plant Biology Exam 1 (3 decks)

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