Bio Lab 10

Question 1

Ecology

Answer 1

Interactions between organisms and their environment

Question 2

What is this view

Answer 2

Skin out

Question 3

What to community ecologists study

Answer 3

Assemblage of directly or indirectly interacting populations living in a habitat and how interactions affect structure and organization of community

Question 4

Population

Answer 4

Group of individuals of one species in an area

Question 5

Competition

Answer 5

One organisms deprives another of a resource causing it to grow more slowly leve fewer offspring and die more quickly

Question 6

Predation

Answer 6

Interaction in which one organism kills another organism and eats it completely

Question 7

Grazing

Answer 7

Organism takes part of prey

Question 8

Detritivory

Answer 8

Consumption of dead organic matter essential to nutrient cycling

Question 9

Parasitism is similar to but different in that

Answer 9

Predation

Symbiosis

Question 10

How are communities described

Answer 10

Diversity (variety of diff. Organisms) abundance

Question 11

Number of different species is

Answer 11

Species richness

Question 12

Most biooogically meaningful measurement is either

Answer 12

Number of individuals or total biomass

Question 13

Sampling methods

Answer 13

Estimate number of species and abundance

Question 14

Sessile

Answer 14

Transact lines directly under transfer or within quadrant

Question 15

Aquatic environment mobile

Answer 15

Swine net, bait traps, swim in specified area for certain amount of time recording

Question 16

Terrestrial

Answer 16

Pitfall traps

Question 17

What must they consider when setting traps

Answer 17

Number of traps and best spatial arrangement and how to avoid bias

Question 18

What do they plot

Answer 18

Species accumulation curves

Accumulation rate of newly discovered species

Question 19

Y axis v x axis

Answer 19

Total number of species represented

Cumulative number of samples

Question 20

Why does it rise steeply at first then gradually

Answer 20

Many species found in initial sample

Slowly as rare species

Question 21

When curve levels off and addition of new doesn’t result in

Answer 21

Additional species collected enough

Question 22

Why are abiotic factors important

Answer 22

Why different habitat suitable for different species

Question 23

What other two things besides temperature and rainfall

Determine

Answer 23

Soil characteristics and light intensity

Determine which plants live

Question 24

Plants may do what

Answer 24

Shade out
Provide camouflage
Production depends on soil as primary producers

Question 25

Three main types of soil

Answer 25

Sandy don’t hold mineral nutrient for growth and dry out fast
Clay compacted and hold water or lots of oxygen availability
Loam (sand clay silt) drains at moderate rate holds nutrients lots of organic matter for detritovores

Question 26

Soil pH and moisture

Answer 26

Affect how nutrients and minerals dissolve in soil

Question 27

What are best for dissolving nutrients

Answer 27

PH of 6 or 7
Slightly acidic or neutral
Reduce activity of detritivores make nutrient uptake difficult