SCSC 301 EXAM 2 EXAM WITH CORRECT
ACTUAL QUESTIONS AND CORRECTLY
WELL DEFINED ANSWERS LATEST 2024 –
2025 ALREADY GRADED A+
Wetting front - ANSWERS--where wet soil meets dry soil as water moves through
a soil
-water movement is due to matric potential and gravitational potential
How does a plant acquire water? - ANSWERS-Capillary movement
Root growth
Leaching - ANSWERS-Ions moving with water into soil
Saturation must occur______ going from small to big pores - ANSWERS-Before
,Hydrologic cycle - ANSWERS-The process of cycling water from the earths surface
to the atmosphere and back again
Anaerobe - ANSWERS-an organism that does not require free oxygen in order to
respire, can only grow in the absence of oxygen.
Facultative anaerobe - ANSWERS-can live with or without oxygen, is capable of
both anaerobe and aerobic metabolism.
Examples of autotrophs - ANSWERS-plants, algae, bacteria
Examples of heterotrophs - ANSWERS-Most soil organisms, bacteria, fungi,
protozoa
Examples of aerobes - ANSWERS-Most fungi, protozoa, and many bacteria
Example from lecture: Nitrifying bacteria
Autotroph - ANSWERS-an organism that can use CO2 as a C source, or obtain
energy from the sun, or from oxidation of inorganic elements or compounds (such
as iron, sulfur, hydrogen, ammonium, and nitrates)
Can make its own food.
, Heterotroph - ANSWERS-An organism that can only get carbon and energy from
organic compounds. Cant make its own food.
Aerobe - ANSWERS-an organism that requires oxygen for respiration and can live
only in the presence of oxygen
Examples of anaerobes - ANSWERS-Archaea (methanogens) and many denitrifying
bacteria
Examples of facultative anaerobes - ANSWERS-Beyond the scope of the exam :)
Function of roots - ANSWERS--Release C into soil via exudates
-Aid in aggregate formation (macro aggregate)
-Use CO2 for respiration (produce CO2)
-Primary producers
-Nutrients to bacteria and other orgs in rhizosphere
Earthworms - ANSWERS--Eat detritus, organic matter and microorganisms
-Form burrows, "natures tiller"
-Create casts- aggregation, reduce soil N loss
-Deleterious effects-(overgrazing, chemical leaching and increased GHG)
Termites - ANSWERS--Complex, social colonies
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller NurseLNJ. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $15.99. You're not tied to anything after your purchase.