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Plant and Animal Semester Exam

True/False
Indicate whether the statement is true or false.
 

 1 

A crop is any plant used by human beings.
 

 2 

Sugar lacks protein, vitamins and minerals and therefore is NOT a major dietary component in developed nations like the U.S.A.
 

 3 

Corn syrup can be used to make sugar (sweeteners).
 

 4 

Today, we use more plant oils in our diet and less animal fats than we did 50 years ago.
 

 5 

Agronomic crops use both NO3 and NH4 forms of nitrogen.
 

 6 

Acidity generally increases with soil depth.
 

 7 

For long term results, annual soil sampling should take place at the about the same time of the year, in nearly the same location and at the same relative depth as past years. This allows a fair evaluation of past soil test results.
 

 8 

The greatest potential for error in soil testing is in taking the sample.
 

 9 

Soil tests are always a good predictor of crop response to starter fertilizer applications.
 

 10 

Plant nutrient deficiency symptoms can be masked by other factors.
 

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 11 

The application of scientific principles and new technologies to agriculture is the definition of.....
a
agribusiness
c
FFA
b
agriscience
d
agronomy
 

 12 

George Washington Carver developed the....
a
hay baler
c
idea of soil conservation
b
cotton gin
d
idea of crop rotation
 

 13 

Who developed the steel moldboard plow?
a
Henry Blair
c
Eli Whitney
b
John Deere
d
George Washington Carver
 

 14 

What is the name of the federal agency, which is part of the USDA, that is represented by the acronym of NRCS?
a
National Registry of Conservation States
b
Natural Regional Care Service
c
Nominal Resource Care School
d
Natural Resource Conservation Service
 

 15 

Which of the following is NOT an important fruit crop in tropical regions?
a
Lemon
b
Papaya
c
Apricot
d
Pineapple
 

 16 

Which of the following is NOT a career that requires a 4-year degree?
a
Plant propagator
c
Crop marketing specialist
b
Seed technologist
d
Fertilizer technologist
 

 17 

Which of the following is NOT a career that requires a graduate degree?
a
Weed scientist
c
Plant breeder
b
Pesticide dealer
d
Biotechnologist
 

 18 

Which of the following is NOT a common symptom of nitrogen deficiency?
a
slow growth
b
higher protein
c
early maturity
d
less tillering in small grains & grasses
 

 19 

Which of the following is NOT a form of nitrogen fixation?
a
biological
c
organic
b
industrial
d
natural oxidation
 

 20 

Which of the following forms of nitrogen fertilizer has the highest percentage of fertilizer in it?
a
urea
c
ammonium sulfate
b
diammonium phosphate (DAP)
d
monoammonium phosphate (MAP)
 

 21 

When Ag lime is added to fields, it is normally applied in units of ___________ per acre.
a
ounces
b
pounds
c
tons
d
kilograms
 

 22 

Which of the following is NOT an objective of soil testing labs?
a
high analytical standards
b
environmental protection
c
timely sample turnaround
d
increased fertilizer sales
e
solve soil fertility problems that may be limiting yields
 

Multiple Response
Identify one or more choices that best complete the statement or answer the question.
 

 23 

As discussed in class, which crops originated in America? (mark all that apply)
 a
cranberry
 c
plum
 e
blueberry
 g
wheat
 b
soybean
 d
pecan
 f
strawberry
 h
oats
 

 24 

In addition to grains, starchy foods are an important part of the diet for many people around the world. Which of the following are examples of common starchy foods as discussed in class? (mark all that apply)
 a
potatoes
 e
wheat
 b
cassava
 f
yams
 c
sweet potatoes
 g
bananas
 d
carrots
 h
corn
 

 25 

Which of the following is nitrogen essential for? (mark all that apply)
 a
protein synthesis
 e
root hair development
 b
nutrient uptake
 f
utilization of sunlight
 c
pollination
 g
fall leaf colorization
 d
chlorophyll
 h
photosynthesis
 

 26 

Nitrogen can be lost from the soil in several ways. Chose all that apply.
 a
crop removal
 e
erosion
 b
excessive heat
 f
volatization
 c
leaching
 g
denitrification
 d
fusion
 h
wildlife consumption
 

Yes/No
Indicate whether you agree with the statement.
 

 27 

Is a company that manufacturers lawnmowers considered an agribusiness?
 

 28 

Does adding fertilizer, especially Nitrogen based fertilizers, speed up the rate that acidity develops?
 

 29 

Does liming basic soils increase crop yield?
 

Numeric Response
 

 30 

The average pH for North American soils is ___________.

 

 31 

The average pH for Ohio soils is _____________.

 

 32 

A soil that has a pH of 5.0 is ________ times more acidic than a soil that has a pH of 7.0.

 

 33 

Most productive soils are between pH _________ and 8.0

 

 34 

For a soil to be considered Sodic or Alkali, the pH value must usually be above ____________.

 

Completion
Complete each statement.
 

 35 

__________________________ helps just 2% of our work force produce food for the rest of the country.
 

 

 36 

One of the first successful agriculture machines, which led to other types of agricultural machines being developed, was the _________________   _______ invented by Eli Whitney.
 

 

 37 

The grain reaper, which was a machine that vastly improved the speed of harvesting grain, was developed by _________________  ______________________.
 

 

 38 

The ________________ Acts of 1862 and 1890 provided for funding for Land Grant Institutions to teach agriculture at the college level.
 

 

 39 

In temperate regions, _______________ is the primary grain.
 

 

 40 

In warmer, more tropical regions, _______________ is the primary grain source.
 

 

 41 

The major fiber crop raised in the U.S.A. is _________________.
 

 

 42 

Nitrogen is a builder of ________________, an important nutritional element for our diet.
 

 

 43 

Most nitrogen used by crops comes from the _________________.
 

 

 44 

The microbial breakdown of soil organic matter, resulting in the release of energy and inorganic nutrients available for plant growth is known as ___________________.
 

 

 45 

Adding lime to soil supplies _________________ and Magnesium to plants.
 

 

 46 

In acidic soils, certain elements can become toxic to plants. One such element that is NOT an essential nutrient (and was discussed in class) for plants is ____________________.
 

 

 47 

Base the number of soil samples needed, known as _____________________ 

_______________________, on the expected variability of the soil.
 

 

 48 

________________________ influences the degree of mixing of nutrients in the soil and nutrient movement through the soil profile.
 

 

 49 

Some nutrients become ____________________ or layered at various depths in the soil.
 

 

 50 

________________ analysis is a better tool to assess some micronutrients.
 

 



 
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