Bio exam lab 6: Soil ecology & cells Flashcards
Def of Soil
a nonscientific name for dirt but is a source of nutrients and water for plants
Def abiotic components of soil
small pieces of rock that various size
Def of biotic components of soil
are organisms and pieces of dead organisms (organic material)
Def soil organism
are primarily soil organisms involved in organic decay
What is the smallest organism in soil
bateria
Def of mycorrhizal fungi
soil that forms a mutualistic association to plant roots
Def of one rock dam
row of rocks
Def of litter
dead pieces of plant-like straw, leaves and twigs
Rhizobium def
bacteria in legumes
how do fungi grow
they grow in long filaments
how do bacteria grow
don’t grow filaments and produce colonies that don’t have fuzzy apperience
Def of colony
composed of a large number of genetically identical cells
Why were soil samples duilted before putting on the plate
This plate would be uncountable and we could not use it to estimate bacterial cell numbers.
Why were soil samples duilted before putting on the plate?
This plate would be uncountable and we could not use it to estimate bacterial cell numbers.
What was the point of lab 6?
erosion and one rock dam on mitigating the effects of erosion?
