Title: Unit 7 Quiz
Course: ENGY 111 Introduction to Biofuels > Section: ENGY 111 Introduction to Biofuels

Q: Transgenic, or genetic transformations, allow plant improvement by increasing resistance to herbicide, insects, and disease as well as frost hardiness.
- True
- False
A: True

Q: Corn stover is made up of the leaves, husks, cobs, and stalks of the corn plant and can be harvested at any time for efficiency and lower costs.
- True
- False
A: False

Q: "Zero" or "no tillage" plants seeds in untilled soil, and then herbicides are used to kill weeds.
- True
- False
A: False

Q: Fresh cut biomass can have moisture contents from 60–75%.
- True
- False
A: True

Q: Fertilizer contains only nitrogen.
- True
- False
A: False

Q: Agriculture is defined as plant cultivation for food and feed.
- True
- False
A: True

Q: Herbicides are used against insects.
- True
- False
A: False

Q: Reduced tillage is a system that uses a chisel plow, crop cultivator or disk, and then planter.
- True
- False
A: True

Q: Excess fertilizer applications increase crop yields.
- True
- False
A: False

Q: Field drying biomass is done when possible since drying is an expensive, energy-intensive process.
- True
- False
A: True

Q: Conservation tillage retains at least 30% of crop residue from the previous crop.
- True
- False
A: True

Q: Silviculture is defined as forest maintenance.
- True
- False
A: True

Q: Ensiling is the harvesting of crops at 40–50% moisture and storing the biomass under anaerobic conditions to promote partial fermentation of sugars to organic acids which suspends microbial degradation.
- True
- False
A: True

Q: Short-rotation woody crops are fast growing biomass crops.
- True
- False
A: True

Q: When harvesting, threshing is the separation process for grains via a combine harvester.
- True
- False
A: True

Q: Fertilizers are used to replenish the soil since fertility declines as decaying vegetative matter is removed from fields.
- True
- False
A: True

Q: In fields, site preparation involves tillage.
- True
- False
A: True

Q: Which of the following are examples of herbaceous crops? (Check all correct responses)
- Switchgrasses
- Corn
- Jerusalem artichokes
- Willow trees
A: Switchgrasses; Corn; Jerusalem artichokes

Q: Integrated pest management is the use of chemicals only for pest control.
- True
- False
A: False