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BIO 219 Midterm Exam – Questions And Answers (A+)
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BIO 219 Midterm Exam – Questions And Answers (A+)
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BIO 219 Midterm Exam – Questions And Answers (A+)Binomial Nomenclature Right Ans - genus+specific name (epithet)
Trinomial Nomenclature Right Ans - genus+specific name+subspecies
Soils contain Right Ans - gasses, water, minerals, organisms, organic
matter, fungi and roots
Topsoil Right Ans - The most fertile and nutrient-rich part of soil (A-
horizon)
Soil Characteristics Right Ans - Horizons that are distinguishable from the
initial material as a result of additions, losses, transfers and transformations
of energy and matter
Ability to support rooted plants in a natural environment
Soil factors that effect habitat quality Right Ans - Quantity of soil
Quality
Nutrient Cycles
Soil disturbance
Quantity of soil Right Ans - source, depth to bedrock, horizons
Soil Quality Right Ans - Porosity-texture, thickness
Water holding capacity (function of pore space and ability to hold a charge)-
organic matter (humus)
Cation exchange capacity (CEC)-pH, Nutrients
Horizons Right Ans - O horizon -> A horizon -> E horizon (sometime) -> B
horizon -> C horizon -> R horizon (bedrock)
Regolith Right Ans - O horizon--C horizon
Soil texture affects Right Ans - porosity (pore space) and available water
Bulk density Right Ans - soil mass/soil volume
, Field capacity Right Ans - The maximum amount of water held by soil
particles against the force of gravity (after being saturated and drained)
Wilting point Right Ans - Moisture level at which plants cannot extract
water
Granular/single grain soils Right Ans - rapid water drainage
Blocky/prismatic soils Right Ans - moderate water drainage
Platy/massive soils Right Ans - slow water drainage
Humus affects Right Ans - waterholding capacity, porosity, CEC, pH and
color
*holds moisture and drains well
Nutrient cycling is affected by Right Ans - climate, parent material, living
organisms and disturbance
Types of rocks Right Ans - igneous, sedimentary, metamorphic
Igneous rocks Right Ans - rocks formed by the cooling of molten rock
(either magma or lava)
Granite, scoria, pumice, obsidian
Sedimentary rocks Right Ans - Loose particles that become cemented
together
Sandstone, limestone, shale, gypsum
Metamorphic rock Right Ans - a rock that has been changed by heat and
pressure
Slate, marble, quartzite, gneiss
Intrusive vs extrusive igneous rocks Right Ans - Extrusive: have smaller
crystals and visible pores (blown out of the volcano)
Intrusive: large (visible crystals) formed with in the volcano
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