CFP Soil Science & Analysis 2

Question 1

Which soil texture class has the highest water-holding capacity per unit volume?

Accepted Answer

Clay

Answer

Clay soils have the highest water-holding capacity due to their large surface area and abundant micropores.

Question 2

The Unified Soil Classification System (USCS) is most commonly used in which fisheries-related context?

Accepted Answer

Engineering site assessments for dam and impoundment construction

Answer

USCS is an engineering classification system primarily used when designing and constructing dams, levees, and pond embankments.

Question 3

A soil with a bulk density of 1.8 g/cm³ compared to one at 1.2 g/cm³ is likely to be:

Accepted Answer

More compacted with reduced porosity

Answer

Higher bulk density indicates greater compaction and less pore space, limiting water infiltration and root penetration.

Question 4

Which of the following best describes the role of cation exchange capacity (CEC) in pond management?

Accepted Answer

It indicates the soil's ability to retain and supply nutrients to pond water

Answer

CEC reflects the soil's capacity to hold positively charged nutrients like calcium, magnesium, and potassium, influencing pond fertility.

Question 5

Which soil horizon is most important to sample when evaluating nutrient status for new pond construction?

Accepted Answer

A horizon

Answer

The A horizon (topsoil) contains the highest organic matter and nutrient concentrations most relevant to initial pond fertility.

(CFP) Certified Fisheries Professional Practice Test