Seventh Grade Science 7Sci Cfa Energy Transfer Ac

Seventh Grade Science 7sci_cfa_energy transfer_ac

1. /
A. / Clouds
B. / Water
C. / Pine Tree
D. / Sun
2. / In a food web, arrows indicate
A. / Who the prey is
B. / Who is being eaten
C. / The direction energy is flowing
D. / The trophic level
3. / If there was a fourth-level consumer in the energy
pyramid above, how many kcal of energy would be
transferred to that level?
A. / 10 kcal
B. / .1 kcal
C. / 0.0001kcal
D. / 100 kcal
4. / Three organisms on a food web have arrows pointing toward them but no arrows pointing away from them. This is because
A. / they make their own food.
B. / they give energy to others.
C. / they need no energy.
D. / nothing shown eats them.
5. /
A. / Only the fox population would increase.
B. / There would be a decrease in decomposers, but other organisms would remain unaffected.
C. / The woodpecker population would be unaffected.
D. / All organisms within the food web above would be impacted to some degree.
6. / Absent-minded Ernie has taken his field notebook to a prairie ecosystem. Ernie was supposed to have totaled up the number of producers, first-order consumers, second-order consumers, and third-order consumers present. Ernie DID record the NUMBER of species he saw along with some examples, but he accidentally erased their categories. Help Ernie classify these by line.
Line 1: ______; 1 species; mountain lion
Line 2: ______; 27 species; prairie grass
Line 3: ______; 7 species; field mice
Line 4: ______; 3 species; skunks
In this order, what did Ernie see?
A. / producers, third-order consumers, second-order consumers, first-order consumers
B. / second-order consumers, producers, third-order consumers, first-order consumers
C. / first-order consumers, producers, second-order consumers, third-order consumers
D. / third-order consumers, producers, first-order consumers, second-order consumers
7. / Which is a correct flow of energy in this food web?
A. / Salamander get energy from snakes and mouse
B. / Acorns get energy from insects and trees
C. / Mouse get energy from salamanders and insects
D. / Snakes get energy from salamanders and mouse
8. /
A. / rabbits and birds
B. / carrots and grasses
C. / grasshoppers and mice
D. / foxes and owls
9. / Using the food web, which population would
increase the most if the insects were eliminated?
A. / Decomposers
B. / Producers
C. / Primary consumers
D. / Secondary consumers
10. /
In the food web, which is the correct flow of energy?
A. / GDB
B. / FGE
C. / ADE
D. / BAC