Chapter 8

Question 1

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

Answer 1

True

Question 2

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

Answer 2

False

Question 3

Many crops plants contain 80 to 95 percent water

Answer 3

True

Question 4

Chlorophyll coverts chemical energy into light energy

Answer 4

False

Question 5

Carotenoids are one type of plant pigment

Answer 5

True

Question 6

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

Answer 6

False

Question 7

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

Answer 7

True

Question 8

One of the functions of transpiration is uptake of mineral nutrients

Answer 8

True

Question 9

The Krebs cycle is part of photosynthesis

Answer 9

False

Question 10

Water is absorbed from the soil by root hairs

Answer 10

True

Question 11

The rate of transpiration increases with higher temperatures

Answer 11

True

Question 12

Leaf curling can be a sign of moisture stress

Answer 12

True

Question 13

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

Answer 13

True

Question 14

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

Answer 14

False

Question 15

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

Answer 15

C. Chloroplast

Question 16

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

Answer 16

B. 400-700nm

Question 17

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

Answer 17

B. Green

Question 18

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

Answer 18

B. ATP and NADPTH

Question 19

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

Answer 19

A. C3

Question 20

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

Answer 20

A. 10

Question 21

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

Answer 21

D. Guard

Question 22

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

Answer 22

B. NH3

Question 23

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

Answer 23

D. Vernalization

Question 24

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

Answer 24

C. Development

Question 25

``` 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 ```

Answer 25

D. Growing Degree Days

Question 26

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

Answer 26

Photosynthesis

Question 27

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

Answer 27

Light and carbon-fixation

Question 28

The Calvin cycle is also known as the _____ cycle

Answer 28

C3

Question 29

The first stable compound of the C3 cycle is _____

Answer 29

3-PGA

Question 30

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

Answer 30

respiration

Question 31

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

Answer 31

Cytoplasm and Mitochondria

Question 32

_________ is the process of water loss from plant stomata

Answer 32

Transpiration

Question 33

_________ is the total water use by the plant

Answer 33

Evapotranspiration

Question 34

The type of bacteria that symbiotically fix nitrogen are _________

Answer 34

rhizobia

Question 35

_________ is the reaction of plants to changing lengths of darkness

Answer 35

Photoperiodism

Question 36

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

Answer 36

Short Day, Long Day and Day Neutral

Question 37

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

Answer 37

Dormancy Reaction

Question 38

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

Answer 38

Dry matter

Question 39

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

Answer 39

Annual, Biennial and Perennial

Question 40

Alfalfa

Answer 40

C3

Question 41

Corn

Answer 41

C4

Question 42

Cacti

Answer 42

CAM

Question 43

Wheat

Answer 43

C3

Question 44

Soybean

Answer 44

C3

Question 45

Smooth Bromegrass

Answer 45

C3

Question 46

Sorghum

Answer 46

C4

Question 47

Cotton

Answer 47

C3

Question 48

Pineapple

Answer 48

CAM

Question 49

Tobacco

Answer 49

C3

Question 50

Amaranth

Answer 50

C4

Question 51

Millet

Answer 51

C4

Question 52

Big Bluestem

Answer 52

C4

Question 53

Peanut

Answer 53

C3

Question 54

Wheat

Answer 54

Long Day

Question 55

Flax

Answer 55

Long Day

Question 56

Corn

Answer 56

Short Day

Question 57

Soybean

Answer 57

Short Day

Question 58

Cucumbers

Answer 58

Day Neutral

Question 59

Mustards

Answer 59

Long Day

Question 60

Rice

Answer 60

Short Day

Question 61

Tomatoes

Answer 61

Day Neutral

Question 62

Cotton

Answer 62

Short Day

Question 63

Smooth Bromegrass

Answer 63

Long Day

Question 64

A plant that takes two years to complete its life cycle

Answer 64

Biennial

Question 65

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

Answer 65

Pseudo-Annual

Question 66

A plant that completes its life cycle in 1 year

Answer 66

Annual

Question 67

A plant that can live longer than 2 years

Answer 67

Perennial