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Worksheetsmarine food pyramid
Total questions: 10
Worksheet time: 8mins
What do heterotrophs do with the energy they consume? Mark all that apply
grow and develop
They decompose it directly into soil
reproduce
Lose some as heat through metabolism
Plants are…Mark all that apply
Autotrophs
Heterotrophs
At the base of the food pyramid
Consumers
Producers
The picture provided shows an ocean bay food chain. Sea otters move into the ocean bay. They eat all of the sea urchins. This change will likely cause...
kelp population to decrease
Crab population to increase
Sea duck population to decrease
Greater competition between crabs and sea urchins
Herbivores make up which level of the energy pyramid?
third
top level
second
base level
For the food chain shown, which of the following changes would have the most severe consequences?
An extreme weather event that completely blocks sunlight
the poaching of leopard seals by game hunters
the introduction of a second predator that eats silverfish
a parasitic infestation that reduces the orca population
If you were to make an energy pyramid based on this food web, Which two organisms would belong in the same trophic level?
Algae and aquatic insects
water fleas and tadpoles
tadpoles and turtles
each organism would have its own trophic level
If producers in this energy pyramid have 1000 kcal of energy, how much energy do the carnivores have ( secondary consumers)?
10%, or 100 kcal
1%, or 10 kcal
.01%, or 1 kcal
90%, or 900 kcal
Which of the following is incorrectly matched?
Producer - autotroph
Consumer - heterotroph
Primary consumer - producer
Secondary consumer - omnivore
Tertiary consumer - carnivore
Two things missing from this food web are decomposers and the (a)
The food pyramid shows that it takes many plankton to sustain just 1 orca. This is because the amount of energy available _________ as we go up the food pyramid.
increases
stays the same
goes up and down
decreases
