Energy Flow In An Ecosystem

Question 1

Producer

Answer 1

The first trophic level in a food chain.

Question 2

Autotroph

Answer 2

Autotrophs make their own food- photosynthetic organisms

Question 3

Heterotroph

Answer 3

A consumer- organisms which feed on other living organisms.
Carnivores- meat eaters
Omnivores- meat and plant eaters
Herbivores- plant eaters

Question 4

Decomposer/Detrivore

Answer 4

They feed on dead, decaying matter or excretions- (returns nutrients back to the Earth)

Question 5

Food Chain

Answer 5

The representation of energy flow from a producer to sequential consumers.

Question 6

Trophic Level

Answer 6

The levels within a food chain.

Question 7

Food Web

Answer 7

Illustrates interconnections between various food chains.

Question 8

Energy Pyramid

Answer 8

Used to display the total amount of incoming energy at each successive level.

Question 9

Why does energy decrease as it travels through a food chain? (Three reasons)

Answer 9

1- Not everything on the lower level is eaten. Ex- roots
2-Not everything eaten is digested. Ex- bones, feathers, fur
3-Not all energy which enters in the trophic level is stored, some of it is used by the organism. Ex- heat production, movement

Question 10

How much energy is lost from one trophic level to the next?

Answer 10

There is a loss of 10% energy from one trophic level to the next.