10.2 Ecology

Question 1

ecosystem

Answer 1

all organisms in a community and abiotic factors

Question 2

four major systems

Answer 2

atmosphere, hydrosphere, lithosphere, biosphere

Question 3

autotroph

Answer 3

producer Ex: grass, feed themselves

Question 4

heterotroph

Answer 4

tertiary consumer, need others for nutrients

Question 5

decomposers vs consumers

Answer 5

both heterotrophs and decomposers break down for nutrients

Question 6

food web

Answer 6

producers, primary, secondary, tertiary, quaternary

Question 7

producer

Answer 7

autotroph

Question 8

consumers

Answer 8

heterotroph

Question 9

herbivores

Answer 9

c1 or primary consumer

Question 10

omnivores

Answer 10

c1+c2 primary and secondary

Question 11

carnivores

Answer 11

c2+ secondary and up

Question 12

food web example
wood rat
rattlesnake
hawk

Answer 12

primary consumer-herbivore
secondary consumer-omnivore
tertiary consumer-carnivore

Question 13

pyramid of energy

Answer 13

of energy passing through each level offers over a period of time

Question 14

pyramid of biomass

Answer 14

compares the mass of biological material at each level

Question 15

pyramid of #’s

Answer 15

compares #’s of organisms at each level

Question 16

how do they lose engery

Answer 16

from heat and cellular respiration

Question 17

how much energy do they pass from each level

Answer 17

10%

Question 18

Why is it considered more efficient to eat at a lower trophic level vs. a higher trophic level?

Answer 18

because there are fewer predators in the lower ends and there is more energy at the bottom when you start going up with each level you get less and less energy