Ecology Self-Review 2

Which sequence best represents the flow of energy through an ecosystem?

• Sun → herbivores → producers → consumers

• producers → green plants → consumers → carnivores

• Sun → green plants → herbivores → carnivores

• consumers → carnivores → herbivores → producers

Which sequence of organisms represents a food chain within this food web?

• clams → small invertebrates → crabs → bass

• water plants → small invertebrates → crayfish → bass

• crayfish → small invertebrates → crabs → bass

• clams → small invertebrates → water plants

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-3

Which sequence of organisms represents a food chain within this food web?

• trees → rabbits → hawks

• mountain lion → deer → trees

• grass → mice → snakes → hawks

• grass → mice → hawks → snakes

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-3

Which sequence of organisms represents a food chain in tis food web?

• tadpoles → algae → daphnia → back swimmers

• sedges → ants → frogs → kookaburras

• algae → daphnia → decayed material → bacteria

• dragonflies → sedges → ants → centipedes

Which population would be most immediately affected by the removal of the centipede population?

• maned goose

• ants

• moths

• lizards

Based on this food web, what would be the most likely consequence of removing the clam population?

• a decrease in the number of crayfish

• an increase in the number of small invertebrates

• an increase in the number of water plants

• a decrease in the number of bass

In an ecosystem, temperature is

• a source of energy and an abiotic factor

• a source of nutrition and a biotic factor

• a limiting factor and an abiotic factor

• a limiting factor and a biotic factor

In an ecosystem, the amount of prey available is

• a source of energy and an abiotic factor

• a source of nutrition and a biotic factor

• a limiting factor and an abiotic factor

• a limiting factor and a biotic factor

A scientist observed that a population of fish increased each year for 3 years, then remained constant each year after. The best explanation for this observation is that the population had

• stopped reproducing

• reached carrying capacity

• mutated into a different species

• run out of food and migrated to a different pond

Which graph represents a population that grew and is maintained at the carrying capacity of its ecosystem?

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