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Crops > Chapter 8 > Flashcards

Chapter 8 Flashcards

1
Q

Photosynthesis from plants is the fundamental source of food and energy for all other complex life on Earth.

A

True

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2
Q

The reaction of photosynthesis is as follows: C6H12O6+6 O2 –> 6CO2 +6H2O + energy (ATP and heat)

A

False

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3
Q

Many crops plants contain 80 to 95 percent water

A

True

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4
Q

Chlorophyll coverts chemical energy into light energy

A

False

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5
Q

Carotenoids are one type of plant pigment

A

True

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6
Q

ATP and NADPH are produced in carbon-fixation steps of photosynthesis

A

False

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7
Q

The light reactions are the only part of photosynthesis that require light

A

True

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8
Q

One of the functions of transpiration is uptake of mineral nutrients

A

True

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9
Q

The Krebs cycle is part of photosynthesis

A

False

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10
Q

Water is absorbed from the soil by root hairs

A

True

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11
Q

The rate of transpiration increases with higher temperatures

A

True

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12
Q

Leaf curling can be a sign of moisture stress

A

True

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13
Q

It is important to recognize crop development stages in order to apply sound management practices

A

True

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14
Q

The Growing Degree Days base temperature for soybeans is 32 degrees F

A

False

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15
Q 
In which organelle does photosynthesis occur? 
       A. Mitochondria           
       B. Lamella 
       C. Chloroplast               
       D. Vacuole
A

C. Chloroplast

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16
Q 
Plant Pigment absorb visible light in this range: 
       A. 200-300nm.      
       B. 400-700nm 
       C. 700-1000nm.             
       D. 1000-1300nm
A

B. 400-700nm

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17
Q 
Plant pigments are least effective in absorbing which color of lights? 
       A. Yellow  
       B. Green 
       C. Red 
       D. Blue
A

B. Green

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18
Q 
The two energy compounds used in the carbon-fixation reactions are: 
       A.  CO2 and H2O
       B. ATP and NADPTH
       C. PGA and ATP 
       D. C3 and RuBP
A

B. ATP and NADPTH

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19
Q

Which type of photosynthesis is inefficient about 25 degrees C
A. C3
B. C4
C. CAM
D. None of these answers is correct

A

A. C3

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20
Q 
What percentage of the world's plants are C4? 
       A. 10   
       B. 40
       C. 80
       D. 95
A

A. 10

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21
Q 
Which type of cell controls the opening and closing of stomata? 
       A. Pericycle 
       B. Cortex 
       C. Mesophyll 
       D. Guard
A

D. Guard

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22
Q 
Rhizobia bacteria convert atmospheric nitrogen into: 
       A. NO2 
       B. NH3 
       C. N2
       D. N3
A

B. NH3

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23
Q 
The plant response that is most important for triggering flowering in the spring is: 
       A. Transpiration 
       B. Nitrogen Fixation  
       C. Dormancy 
       D. Vernalization
A

D. Vernalization

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24
Q 
The process by which plants differentiate from seedlings to vegetative to flowering would best be described as: 
       A. Vernalization   
       B. Growth 
       C. Development 
       D. Dormancy
A

C. Development

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25
Q 
The index of heating accumulation (or heat units over time) used to estimate how crop development will progress and when a crop is predicted to mature is: 
       A. Temperature Degree Days
       B. Temperature Day Units 
       C. Growing Day Units 
       D. Growing Degree Days
A

D. Growing Degree Days

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26
Q

________ is the process in which energy from sunlight is converted to chemical energy by the plant

A

Photosynthesis

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27
Q

The two types of reactions of photosynthesis are _______ and ________ reactions

A

Light and carbon-fixation

28
Q

The Calvin cycle is also known as the _____ cycle

29
Q

The first stable compound of the C3 cycle is _____

30
Q

The conversion of sugars to energy for use in metabolism of living cells is called ______

A

respiration

31
Q

The parts of the cell where respiration occurs are the ______ and _______

A

Cytoplasm and Mitochondria

32
Q

_________ is the process of water loss from plant stomata

A

Transpiration

33
Q

_________ is the total water use by the plant

A

Evapotranspiration

34
Q

The type of bacteria that symbiotically fix nitrogen are _________

35
Q

_________ is the reaction of plants to changing lengths of darkness

A

Photoperiodism

36
Q

The three categories of plants classified by their flowering responses are ________, _________, and _________

A

Short Day, Long Day and Day Neutral

37
Q

The response of perennial plants to shortening days and decreasing temperature is called _________

A

Dormancy Reaction

38
Q

The weight of all a plant’s components minus the water is called ________

A

Dry matter

39
Q

The three life cycles of plants are _________, ________ and ________

A

Annual, Biennial and Perennial

40
Q

Alfalfa

41
Q

Corn

42
Q

Cacti

43
Q

Wheat

44
Q

Soybean

45
Q

Smooth Bromegrass

46
Q

Sorghum

47
Q

Cotton

48
Q

Pineapple

49
Q

Tobacco

50
Q

Amaranth

51
Q

Millet

52
Q

Big Bluestem

53
Q

Peanut

54
Q

Wheat

55
Q

Flax

56
Q

Corn

57
Q

Soybean

58
Q

Cucumbers

A

Day Neutral

59
Q

Mustards

60
Q

Rice

61
Q

Tomatoes

A

Day Neutral

62
Q

Cotton

63
Q

Smooth Bromegrass

64
Q

A plant that takes two years to complete its life cycle

65
Q

A plant that is managed as an annual but is not an animal

A

Pseudo-Annual

66
Q

A plant that completes its life cycle in 1 year

67
Q

A plant that can live longer than 2 years

Crops (14 decks)

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