Question 1

In a forest you may observe that plants on the forest floor are not as vigorous as other plants; this would most likely be because:

Accepted Answer

A)   They do not get adequate sunlight.
B)   Water is limiting.
C)   Their leaves are smaller and cannot capture as much light.
D)   They are competing for minerals from other plants.
E)   They are more affected by gravity than taller plants.F) A) and B)
G) C) and D)

Question 2

One reason magnesium is important to plants is that it is part of the chlorophyll molecule.

Accepted Answer

A) True 
 B)False

Question 3

One of the considerations scientists have when breeding for certain characteristics in cultivated crops such as rice or corn is to look for:

Accepted Answer

A)   wild type genes
B)   plant adaptations to certain environmental conditions
C)   plants that generally grow where other plants cannot grow
D)   plants that are stressed
E)   plants that have good characters for leaf adaptationsF) B) and D)
G) C) and D)

Question 4

One reason plants often do not survive indoors is because they lack adequate amounts of:

Accepted Answer

A)   water
B)   minerals
C)   light
D)   proper temperature
E)   All of these could be trueF) B) and E)
G) C) and D)

Question 5

Several micronutrients such as manganese and molybdenum are important as:

Accepted Answer

A)   minerals used in plant membranes
B)   minerals found mostly in cell walls
C)   minerals that are cofactors in certain cell reactions
D)   minerals that bond to macronutrients
E)   minerals that are so small it is impossible to determine their roleF) A) and E)
G) A) and C)

Question 6

Soils are composed mostly of which of the following?

Accepted Answer

A)   layers of many decaying elements
B)   fertilizers and other organic materials
C)   horse and cow manure
D)   layers of material mostly from rocks
E)   inorganic minerals and organic materialsF) C) and E)
G) All of the above E

Question 7

Several micronutrients such a manganese and molybdenum are important for helping enzymes function.

Accepted Answer

A) True 
 B)False

Question 8

Which of the following is NOT a characteristic of shade leaves on a plant?

Accepted Answer

A)   more chlorophyll production
B)   less mesophyll tissue
C)   more air spaces
D)   lacking an epidermal layer
E)   lacking mesophyll tissueF) A) and D)
G) None of the above

Question 9

Harmful amounts of ________ may be absorbed by the leaf cuticle as well as by carotenoids and flavonoids.

Accepted Answer

A)   carbon dioxide
B)   blue and red light waves
C)   chlorophyll
D)   xanthophylls
E)   UV radiationF) None of the above
G) A) and D)

Question 10

When a mycorrhizal fungus associates with the roots of a plant, the fungus usually causes harm to the plant.

Accepted Answer

A) True 
 B)False

Question 11

Nitrogen is especially important in plants for the formation of proteins.

Accepted Answer

A) True 
 B)False

Question 12

The term macronutrients refers to the size of minerals such as nitrogen which is a macronutrient.

Accepted Answer

A) True 
 B)False  False

Question 13

Plants generally must use which of the following methods of phosphorus uptake?

Accepted Answer

A)   nonenergy transport
B)   transport control by soil moisture
C)   passive uptake
D)   ATP proton cotransport
E)   None of these are trueF) B) and D)
G) A) and B)

Question 14

One of the limiting factors in engineering plants for nitrogen fixation is to prevent the binding of ________ to the enzyme nitrogenase and the subsequent inhibition of the enzyme.

Accepted Answer

A)   calcium
B)   bacteria
C)   oxygen
D)   phosphorus
E)   cell membranesF) A) and C)
G) A) and E) C

Question 15

Phosphorus may be abundant in soils but may also be in availability to the plant.

Accepted Answer

A)   excessive
B)   bound to nitrogen
C)   limited
D)   tightly bound
E)   absorbedF) A) and D)
G) C) and D)

Question 16

Which of the following is the reason humus is important as a soil component?

Accepted Answer

A)   helps plants maintain upright growth
B)   keeps plants in place so they do not fall over
C)   puts plants closer to water sources
D)   helps plants by providing more water and minerals
E)   allows roots to grow deeper to reach water belowF) A) and D)
G) A) and E)

Question 17

Boron is a micronutrient that is needed by plants for:

Accepted Answer

A)   active transport of other minerals
B)   building membranes
C)   production of amino acids
D)   cross-linking polysaccharides in cell walls
E)   cell wall developmentF) A) and E)
G) A) and D)

Question 18

Erosion of soils is of major concern throughout the world and happens mostly because of what factor?

Accepted Answer

A)   Soils are exposed and not covered by plants.
B)   heavy rainfall
C)   Soils are exposed to winds.
D)   Soils are not kept fertilized.
E)   Soils are frequently flooded.F) A) and B)
G) B) and E)

Question 19

Which of the following is NOT a part of the concept of organic farming?

Accepted Answer

A)   use of organic fertilizers
B)   use of growth regulators
C)   nonuse of pesticides
D)   nonuse of inorganic fertilizers
E)   use of composted wastesF) C) and E)
G) A) and B)

Question 20

Mycorrhizal association with plant roots is best described as:

Accepted Answer

A)   detrimental to the roots
B)   only a temporary association dependent on water uptake
C)   a symbiotic relationship between the plant and certain bacteria
D)   a fungus root interrelationship
E)   a kind of fungal parasite on plant rootsF) B) and E)
G) A) and C)

Exam 37: Flowering Plants: Nutrition

In a forest you may observe that plants on the forest floor are not as vigorous as other plants; this would most likely be because:

Correct AnswerverifiedShow Answer

One reason magnesium is important to plants is that it is part of the chlorophyll molecule.

Correct AnswerverifiedShow Answer

One of the considerations scientists have when breeding for certain characteristics in cultivated crops such as rice or corn is to look for:

Correct AnswerverifiedShow Answer

One reason plants often do not survive indoors is because they lack adequate amounts of:

Correct AnswerverifiedShow Answer

Several micronutrients such as manganese and molybdenum are important as:

Correct AnswerverifiedShow Answer

Soils are composed mostly of which of the following?

Correct AnswerverifiedE

Several micronutrients such a manganese and molybdenum are important for helping enzymes function.

Correct AnswerverifiedShow Answer

Which of the following is NOT a characteristic of shade leaves on a plant?

Correct AnswerverifiedShow Answer

Harmful amounts of ________ may be absorbed by the leaf cuticle as well as by carotenoids and flavonoids.

Correct AnswerverifiedShow Answer

When a mycorrhizal fungus associates with the roots of a plant, the fungus usually causes harm to the plant.

Correct AnswerverifiedShow Answer

Nitrogen is especially important in plants for the formation of proteins.

Correct AnswerverifiedShow Answer

The term macronutrients refers to the size of minerals such as nitrogen which is a macronutrient.

Correct AnswerverifiedFalse

Plants generally must use which of the following methods of phosphorus uptake?

Correct AnswerverifiedShow Answer

One of the limiting factors in engineering plants for nitrogen fixation is to prevent the binding of ________ to the enzyme nitrogenase and the subsequent inhibition of the enzyme.

Correct AnswerverifiedC

Phosphorus may be abundant in soils but may also be in availability to the plant.

Correct AnswerverifiedShow Answer

Which of the following is the reason humus is important as a soil component?

Correct AnswerverifiedShow Answer

Boron is a micronutrient that is needed by plants for:

Correct AnswerverifiedShow Answer

Erosion of soils is of major concern throughout the world and happens mostly because of what factor?

Correct AnswerverifiedShow Answer

Which of the following is NOT a part of the concept of organic farming?

Correct AnswerverifiedShow Answer

Mycorrhizal association with plant roots is best described as:

Correct AnswerverifiedShow Answer

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E

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False

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C

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