Title: Quiz 5
Course: HRT 114 Introduction To Soil Science > Section: HRT 114 Introduction To Soil Science

Q: Legumes are known as:
- Accumulators
- Peas
- Nitrogen fixers
- All of the above
A: All of the above

Q: Dairy farmers cut forage when immature to provide:
- More nutritious feed
- Bedding straw
- Grain
A: More nutritious feed

Q: Nitrogen is essential for and promotes:
- Flowering
- Vegetative growth
- Neither of these
A: Vegetative growth

Q: Soil pH is a measure of the soil:
- Water
- Air
- Acidity
A: Acidity

Q: Phosphorus in soils is highly
- Mobile
- Immobile
A: Immobile

Q: Macronutrients are found in plants above
- 50 ppm
- 500 ppm
- 5000 ppm
A: 500 ppm

Q: Phosphorus is important to plants primarily for
- Root development and flowering
- Vegetative growth
- Catalyst in photosynthesis
A: Root development and flowering

Q: A pH of 5 is ______ as acid as a pH of 7.
- 10 times
- Twice
- 100 times
A: 100 times

Q: Soil pH is a measure of soil acidity in terms of
- Hydrogen atoms
- Nitrogen atoms
- Potassium atoms
A: Hydrogen atoms

Q: Mycorrhizae on tree roots in the soil are a type of fungus that lives in a symbiotic relationship with the plant root system.  This means that the relationship is:
- Mutually destructive
- Neither harmful or beneficial
- Mutually beneficial
- Very short term in duration
A: Mutually beneficial

Q: When nutrient elements are taken up by living organisms they are thought to be:
- Immobilized
- Mineralized
- Mobilized
- Demineralized
A: Immobilized

Q: A macronutrient that is readily broken down by bacteria is:
- Potassium
- Nitrate
- Magnesium
A: Nitrate

Q: The greatest value of weathering is the:
- Production of soil
- Formation of rocks
- Loss of bacteria
A: Production of soil

Q: The most limiting macronutrient due to leaching is:
- Phosphorus
- Nitrogen
- Potassium
A: Nitrogen

Q: When the soil is cut by a multitude of shallow trenches, it is known as:
- Sheetwash
- Rills
- Gullies
A: Rills

Q: If a nutrient is in short supply and the growth of plants is limited, it is called:
- The malfunctioning nutrient
- The zone of poverty
- Immobilization
A: The zone of poverty

Q: The vitamin C content of tomatoes is determined by the amount of
- Nitrogen
- Cobalt
- Sunlight
A: Sunlight

Q: The most effective agent of erosion is running water.
- True
- False
A: True

Q: The most critical element deficiency that faces livestock is phosphorus.
- True
- False
A: True

Q: If a compost pile starts to give off obnoxious odors, it indicates a need for oxygen.
- True
- False
A: True