Succession & Biomes

Plants are considered to be

• Producers

• Consumers

• Herbivores

A bird stalks, kills, and then eats an insect. Based on its behavior, which pair of ecological terms describes the bird?

• autotroph, herbivore

• carnivore, consumer

• herbivore, decomposer

Which of these is a biotic factor?

• temperature

• soil type

• plant life

Which is a biotic factor that affects the size of a population in a specific ecosystem?

• number and kinds of predators in the ecosystem

• concentration of oxygen in the ecosystem

• average temperature of the ecosystem

Which of these is an abiotic factor?

• cold winters

• fish

• conifer trees

Which is an example of how biotic and abiotic factors interact?

• Tree roots split apart rocks in the ground.

• Water and soil mix together to make mud.

• Sunlight increases the temperature of pond water.

Which organism is a producer in this food web?

• Caterpillar

• Rabbit

• Grass

Which organism is considered a primary consumer in this food web?

• Leaves

• Grasshopper

• Hawk

Which of these groups of organisms are considered secondary consumers?

• Hawk, Snake, Blue Jay

• Grass, Rabbit, Hawk

• Caterpillar, Rabbit, Grasshopper

What is an organism's niche?

• job and role in an ecosystem

• place they live

• all the biotic and abiotic factors in the ecosystem