CCA INTERNATIONAL FINAL PAPER 2026
QUESTIONS WITH SOLUTIONS 100%
CORRECT
⩥ which of the following nutrient is a cation in soil. Answer: potassium
⩥ which of the following nutrients is a macronurtrient?. Answer: s
⩥ which of the following regulates stomatal opening in plants?. Answer:
K
⩥ which of the following nutrient form is most immobile in soil?.
Answer: phosphate
⩥ which of the following is an uptake from Nitrogen?. Answer: NO3
⩥ which of the following is an uptake form of phosphorus?. Answer:
H2PO4
⩥ which of the following is a chemical uptake form of potassium?.
Answer: K+
,⩥ which of the following is a micronutrient?. Answer: Cu
⩥ at which of the following plant growth stages would you expect the
highest demand for soil nutrients?. Answer: mid vegetative
⩥ chelates are commonly used to increase the availability of?. Answer:
Fe
⩥ which of the following is the lease available source of nutrients?.
Answer: soil minerals
⩥ if a nutrient is released to the soil during decomposition of OM,
_______________ has occurred?. Answer: mineralization
⩥ when a plant nutrient is absorbed with water that is moving to and into
plant root, the nutrient uptake process is called?. Answer: mass flow
⩥ a major way calcium is supplied to the plant is by?. Answer: cation
exchange
⩥ which of the following is more soluble in a flooded soils than in
upland soil?. Answer: manganese
, ⩥ which of the following soil textures would likely have the lowest soil
fertility?. Answer: sand
⩥ in which of the following cases would you expect the greatest N
mineralization?. Answer: soil amended with bio-solid
⩥ which of the following is not needed for rapid nitrification to occur?.
Answer: nitrate
⩥ conditions which favor volatile losses of nitrogen as ammonia
include?. Answer: high temperature
⩥ de-nitrification is the conversion of ______ to gaseous forms like
dinitrogen and oxides of Nitrogen?. Answer: Nitrate
⩥ symbiotic Nitrogen Fixation is the process where atmospheric N is
converted to ammonia in the root noduels of _____?. Answer: legumes
⩥ immobilization of inorganic N during decomposition will be most
likely if the material decomposing has a C:N ratio of?. Answer: 35
⩥ a condition which favors symbiotic N fixation is?. Answer: low soil
nitrate
QUESTIONS WITH SOLUTIONS 100%
CORRECT
⩥ which of the following nutrient is a cation in soil. Answer: potassium
⩥ which of the following nutrients is a macronurtrient?. Answer: s
⩥ which of the following regulates stomatal opening in plants?. Answer:
K
⩥ which of the following nutrient form is most immobile in soil?.
Answer: phosphate
⩥ which of the following is an uptake from Nitrogen?. Answer: NO3
⩥ which of the following is an uptake form of phosphorus?. Answer:
H2PO4
⩥ which of the following is a chemical uptake form of potassium?.
Answer: K+
,⩥ which of the following is a micronutrient?. Answer: Cu
⩥ at which of the following plant growth stages would you expect the
highest demand for soil nutrients?. Answer: mid vegetative
⩥ chelates are commonly used to increase the availability of?. Answer:
Fe
⩥ which of the following is the lease available source of nutrients?.
Answer: soil minerals
⩥ if a nutrient is released to the soil during decomposition of OM,
_______________ has occurred?. Answer: mineralization
⩥ when a plant nutrient is absorbed with water that is moving to and into
plant root, the nutrient uptake process is called?. Answer: mass flow
⩥ a major way calcium is supplied to the plant is by?. Answer: cation
exchange
⩥ which of the following is more soluble in a flooded soils than in
upland soil?. Answer: manganese
, ⩥ which of the following soil textures would likely have the lowest soil
fertility?. Answer: sand
⩥ in which of the following cases would you expect the greatest N
mineralization?. Answer: soil amended with bio-solid
⩥ which of the following is not needed for rapid nitrification to occur?.
Answer: nitrate
⩥ conditions which favor volatile losses of nitrogen as ammonia
include?. Answer: high temperature
⩥ de-nitrification is the conversion of ______ to gaseous forms like
dinitrogen and oxides of Nitrogen?. Answer: Nitrate
⩥ symbiotic Nitrogen Fixation is the process where atmospheric N is
converted to ammonia in the root noduels of _____?. Answer: legumes
⩥ immobilization of inorganic N during decomposition will be most
likely if the material decomposing has a C:N ratio of?. Answer: 35
⩥ a condition which favors symbiotic N fixation is?. Answer: low soil
nitrate
