Question

If a Killer whale is feeding at the fourth trophic level, how much phytoplankton mass is required to add each gram of new mass to the whale? Assume that 10% of the energy at one trophic level is transferred to the next level.
Select one:
a. 1 gram
b. 1000 grams
c. 100 grams
d. 500 grams

Answer 1

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Answer 2

Phytoplankton is 1\(^{st}\) trophic level and killer whale is 4\(^{th}\). Now,
1000 g (phytoplankton)------> 100 (2nd trophic level)------> 10 (3rd trophic level)-------> 1g(Killer whale)

Answer 3

Got it ?

Answer 4

1 gram?

Answer 5

No, 1000 g of phytoplankton will lead to 1 g of new mass in killer whales

Answer 6

Since, only 10% from each level is transferred.

Answer 7

nah man, i think he means 1,000 plank = one g of fatness for whales

Answer 8

ok, so 1000 grams

Answer 9

1000 g (phytoplankton)------> 100 (2nd trophic level)------> 10 (3rd trophic level)-------> 1g(Killer whale)

Answer 10

yep !

Answer 11

ok thanks!

Answer 12

good stuff Smartie

Answer 13

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Answer 14

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