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2003 North Carolina State Agronomy Test


True/False
Indicate whether the sentence or statement is true orfalse.
 

 1. 
A hybrid variety is a productof a cross between two parent crop plants that differ in one or more hybrid traits (parents are notidentical.)
 

MultipleChoice
Identify the letter of the choice that best completes the statement or answers thequestion.
 

 2. 
Which of the following crops isnot a legume?
a.
cotton
b.
clover
c.
peanut
d.
alfalfa
 

 3. 
If you have a 6-12 analysisfertilizer, which number represents the percentage of Phosphorus (expressed as P2O5)?
a.
6
b.
12
c.
18
d.
24
 

 4. 
Which of the following crops isconsidered a fiber crop?
a.
Corn
b.
Soybeans
c.
Wheat
d.
Cotton
 

 5. 
In most crop plants, a nitrogendeficiency will first show up on which part of the plant?
a.
Bottom leaves
b.
Top leaves
c.
All leaves would show symptoms at the same time
d.
None of these are correct
 

 6. 
Of the soil textures listedbelow, which has the finest texture and smallest particle size?
a.
Sand
b.
Silt
c.
Loam
d.
Clay
 

 7. 
You have a threshold forspraying an insecticide of 10% of the plants sampled having at least one budworm. When you count 100plants at random in a field, you find that 25 have at least one budworm. What should youdo?
a.
Spray the insecticide
b.
Wait until you see more plants with thebudworms before you spray the insecticide
c.
Spray more than what the insecticide labelcalls for because you have a lot of budworms
 

 8. 
Which one of the followingcrops is a dicot?
a.
Soybeans
b.
Corn
c.
Wheat
d.
Barley
 

 9. 
Palmer amaranth, chick weed,and dandelion are all examples of which category of weeds?
a.
Grass Weeds
c.
Sedges
b.
Broadleafweeds
d.
None of these are correct
 

 10. 
A legume is a plant thatconverts which element in the air into a form plants can use?
a.
Oxygen
b.
Hydrogen
c.
Nitrogen
d.
Helium
 

 11. 
Lime is used to adjust whatsoil property?
a.
Organic Matter
b.
pH
c.
Drainage
 

 12. 
The use of light energy by aplant to make food is known as _______________
a.
Respiration
b.
Photosystem
c.
Photosynthesis
d.
Chlorophyll
 

 13. 

Seeding emergence can beaffected by which of the following?
a.
Soiltemperature
c.
Tillage
e.
All of these are correct
b.
Soil type
d.
Planting depth
 

 14. 

The term commonly used todescribe a crop plant that has been genetically altered to aid in pest control is a__________________.(example: Cotton tolerant to Roundup herbicide)
a.
ABC
b.
GMO
c.
GAT
d.
TGC
 

 15. 

In a seed, the source of energyfor seedling development is called _______________.
a.
Cotyledon
b.
Radicle
c.
Endosperm
d.
Seed coat
 

 16. 

Which of the following is notan advantage of no-till production of a crop compared to conventional planting?
a.
Better soil moisture
c.
Reduced fuel use
b.
Better weed control
d.
Warmer soil at planting
 

 17. 

What is an acceptable pH rangefor growth of most agronomic crops?
a.
5.7 to 6.3
b.
4.0 to 4.6
c.
7.4 to 8.0
 

 18. 

Dolimitic lime differs fromagricultural lime because it contains___________________.
a.
N
b.
K
c.
Mg
d.
Zn
e.
Pb
 

 19. 

Agronomy is the study of cropsand soils for the production of __________________.
a.
Food
c.
Fiber
b.
Feed
d.
All of these arecorrect.
 

 20. 

Plants that repeat theirlifecycles indefinitely are known as ______________________.
a.
Biennial
b.
Perennial
c.
Annual
 

 21. 

Which of the following is notconsidered a cereal crop?
a.
Wheat
b.
Corn
c.
Rye
d.
Soybeans
 

 22. 

Decomposed remains of organismsthat have been incorporated into the soil are known as _________________.
a.
Soil enzymes
c.
Soil organic matter
b.
Cation exchange capacity
d.
Lime
 

 23. 

The three macronutrients (majornutrients) in plant nutrition are __________________.
a.
N, P, and K
b.
N, Ca, and S
c.
P, N, andMg
d.
Zn, Pb, and Fe
 

 24. 

Which of the following is not afemale flower part?
a.
Stigma
b.
Ovary
c.
Style
d.
Anther
 



 
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