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PSS Test 1 Final Questions & Answers 2024/2025
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PSS Test 1 Final Questions & Answers 2024/2025
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PSS Test 1 Final Questions & Answers2024/2025
The amount of energy striking a plant that is actually captured by photosynthesis is roughly 1-2%, and
roughly 1% of that is transferred when a herbivore consumes a plant. How much energy is transferred
when a carnivore or omnivore consumes a herbivore? - ANSWERS1%
Plants are _____ organisms. - ANSWERSAutotrophic
As plants begin to grow, and organic matter begins to accumulate, a layer, a soil horizon, begins to form
at the soil surface. This horizon is mainly mineral in nature and enriched in organic matter, this horizon is
designated as an ___ horizon. - ANSWERSA
A subsurface horizon that has been enriched in some material (clay, iron, organic matter, salts, etc.) is
designated as a __ horizon. - ANSWERSB
Very old, highly weathered soils (oxisoils) represent the ultimate in soil weathering and are dominated
by the oxides of which elements? - ANSWERSIron and Aluminum
The particles in which USDA particle size class are the smallest? - ANSWERSClay
The USDA defines soil sized material as that which is less than _____ in diameter. - ANSWERS2mm
What nutrients are required for the plant? - ANSWERS(C H O) P K N S Ca Fe Mg B Mn Cu Zn Mo (Cl Ni Na)
What are the components of soil? - ANSWERSMineral (inorganic)
Organic
Water
Air
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