Food Chains and Food Webs
1.
Food chains always start with an autotrophic organism called a _ producer __.
2.
The first heterotrophic organisms in a food chain are called first order or primary __ consumers __.
3.
The second heterotroph in a food chain is called a __ secondary __ __ consumer __.
4.
Organisms that feed on dead organsims or the waste products of other organisms are called decomposers or detrivorers _.
5.
Arrange the organisms in each group below into a food chain and tell which of the above terms refers to each.
A) Man, corn, pig
Corn (producer)  pig (primary consumer)  man (secondary consumer)
B) Rotting lettuce, lice, rat
Rotting lettuce (producer)  rat (primary consumer)  lice (secondary consumer)
C) Grasshopper, lizard, goldenrod, hawk
Goldenrod (producer)  grasshopper (primary consumer)  lizard (secondary consumer)  hawk (tertiary consumer)
D) Hawk, blueberry, small bird
Blueberry (producer)  small bird (primary consumer)  hawk (secondary consumer)
E) Child, peanut butter sandwich, mosquito
Peanut butter sandwich (producer)  child (primary consumer)  mosquito (secondary consumer)
F) Water plant, raccoon, mosquito larvae, small fish
Water plant (producer)  mosquito larvae (primary consumer)  small fish (secondary consumer)  raccoon (tertiary consumer)
G) Man, rice, bacteria
Rice (producer)  man (primary consumer)  bacteria (secondary consumer or decomposer)
H) Flea, fungus, algae, snail, fox, snake, fish
Algae (producer)  snail (primary consumer)  fish (secondary consumer)  snake (tertiary consumer)  fox (4 th order consumer)  flea (5 th order consumer)  fungus (decomposer)
6.
For each of the food chains in #5 tell which organisms would have the most total energy and which would have the least total energy.
In each case, the producers have the most energy while the highest order consumer has the least.
7.
The following organisms all live in and around a beaver pond. Arrange them into a food web for the community.

Beavers
Mosquitoes
Ducks
Frogs Algae
Mosquito larvae Cattails
Geese Popular trees
Trout
Blue heron
Bats
Water plants
Swamp grass
Grasshoppers
Bats
Blue herons
Mosquitoes
Frogs
Geese
Trout
Ducks
Beavers
Grasshoppers
Swamp grass
Mosquito larvae
Algae Water plants Cattails Poplar trees