Ecology - Unit 1 (Energy Flow)

Question 1

Trophic Levels

Answer 1

the position of an organism in the food chain

Question 2

As one organism feeds on another, ___ from a
trophic level to the next

Answer 2

As one organism feeds on another, energy is transferred from a trophic level to the next

Question 3

Energy in an ecosystem
comes from the ___.

Answer 3

Energy in an ecosystem
comes from the sun

Question 4

Plants use the sun to
carry out
____.

Answer 4

Plants use the sun to
carry out
photosynthesis

Question 5

At each trophic level or feeding step, A LOT of energy is lost (around ____!)

Answer 5

At each trophic level or feeding step, A LOT
of energy is lost (around 90%!)

Question 6

1st law of thermodynamics

Answer 6

energy and matter can neither be created nor destroyed, it can only be
converted

Question 7

2nd law of thermodynamics

Answer 7

for every energy conversion in the environment, only some thermal energy is generated

Question 8

____ of energy is transferred from one trophic level to the next

Answer 8

10% of energy is transferred from one trophic level to the next

Question 9

____ of energy is lost as heat

Answer 9

90% of energy is lost as heat

Question 10

biomass

Answer 10

renewable organic material that comes from plants and animals