Certified Crop Advisor (CCA) Practice Exam Questions And Correct Answers (Verified Answers) Plus Rationales

Certified Crop Advisor (CCA) Practice Exam
Questions And Correct Answers (Verified Answers)
Plus Rationales
Question 1
What are three ways of routine additions of a cation can occur?
Correct Answer
Fertilization, Liming, acidification



Question 2
Finish the sentence: Phosphate is _____________________ in the soil except where P
sorption capacity has been _____________________.
Correct Answer
immobile, exceeded



Question 3
What is the soil uptake form(s) for K?
Correct Answer
potassium ion



Question 4
What does Sodium (Na) do for the plant?
Correct Answer
improves photosynthesis in C4 plants and maybe be able to substitute for
potassium to some degree




Page 1 of 111

,Question 5
What does Silicon (S) do for the plant?
Correct Answer
cell wall strength, reduces lodging, improves adaptation to stresses like drought,
improves pest resistance and helps improve plant vigor



Question 6
Finish the sentence: Adequate soil moisture favors ________________________ and release
of _____ , ____ and ______ from the material undergoing decomposition.

Correct Answer
decomposition, N, P, S



Question 7
When do plant nutrient needs GRADUALLY increase?
Correct Answer
Seedling Stage



Question 8
When do plant nutrient needs DECREASE?
Correct Answer
as reproductive growth dominates



Question 9
Is calcium, magnesium and potassium which are held onto the CEC, immobile or
mobile?
Correct Answer
immobile




Page 2 of 111

,Question 10
Is N mobile in the plant?
Correct Answer
yes, N is mobile



Question 11
Name three soluble anions.
Correct Answer
nitrate, chloride, sulfate



Question 12
What does Ca stand for?
Correct Answer
Calcium



Question 13
Cations have a ___ charge
Anions have a ___ charge
Correct Answer
positive, negative



Question 14
Are Carbon (C), hydrogen (H), and oxygen (O) listed as micronutrients or
macronutrients?
Correct Answer
Macronutrients




Page 3 of 111

, Question 15
Finish the sentence: If routine additions of a cation occur, the added cation(s) can
___________________________ with the Ca, Mg or K on the CEC bringing Ca, Mg or K into
the __________________________________.
Correct Answer
change places, soil solution



Question 16
Finish the sentence: any cation in the soil solution is _______________ and subject to
__________________.
Correct Answer
mobile, leaching



Question 17
What does Selenium (Se) do for the plant?
Correct Answer
improves plant growth and is an essential element for animals that obtain Se from
the feed



Question 18
Is Mg mobile in the plant?
Correct Answer
yes, Mg is mobile



Question 19
What is the soil uptake form(s) for Mo?
Correct Answer
molybdate ion




Page 4 of 111