Energy Flow in Ecosystems — Unit test Answers
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In a rainforest food chain, caterpillars and butterflies eat orchid plants. Toucans eat the caterpillars and butterflies. Leopards eat the toucans.Which statement describes the energy in this food chain?
A
The leopards gain energy directly from the butterflies.B
The orchids have the least amount of available energy.C
The caterpillars gain energy directly from the orchids.D
The toucans have more available energy than the butterflies.22
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Certain bacteria live in plant roots and receive sugars from the plants. The bacteria provide a source of useful nitrogen for the plants.This best describes which type of relationship?
A
parasitismB
competitionC
mutualismD
predation23
Study the diagram of a desert food chain.
A
The number of snakes would increase.B
The number of cactus plants would increase.C
The number of foxes would be unaffected.D
The number of cactus plants would be unaffected.24
Which are examples of biotic factors? Select three options. rotting logstream waterdead leavesbacteriasoil
A
rotting logB
stream waterC
dead leavesD
bacteriaE
soil25
Which term best describes all of the different species of insects living in a rainforest?
A
a number of populationsB
a nicheC
a number of communitiesD
a habitatDid you find these answers helpful?
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