1st Nine Weeks Ecology Review 2020-21

The lowest level of the food chain is made up of

• autotroph

• heterotroph

• carnivore

• omnivore

Which statement describes the role of the squirrel in this food web?

• Squirrel are included in the energy flow to cougars.

• Squirrel are the only omnivores within the ecosystem.

• Squirrel obtain most of thier energy from wolves.

• Squirrel are key producers in this ecosystem.

Which path shows the correct way energy flows through an ecosystem?

• dolphin- sardines - krill - plankton

• sardines- krill - plankton - dolphin

• krill - sardines - dolphin - plankton

• plankton - krill - sardines - dolphin

Hummingbirds depend on specific flowers for nectar for food. The flowers depend on the hummingbirds to

• make food for photosynthesis.

• removes waste products.

• carry pollen for reproduction from flower to flower.

• consumer herbivores for protection.

Mosquito larvae must develop in standing water. How would the number of adult mosquitos be affected by a long period of sunshine, hot temperatures, and less rain than usual.

• There would be fewer mosquitos because the predators would leave.

• There would be fewer mosquitos because they could not reproduce if standing water dries up.

• There would be more mosquitos because they would have more food available in hot weather.

• There would be more mosquitos because they would grow faster in the hot sun.

Deer live on the gound and eat grasses, soft vegetation, and acorns.

Squirrels live in the trees and eat seeds, nuts, and acorns.

Rabbits live on the ground and eat grasses and other soft vegetation.

Bluejays live in the trees and eat insects and bugs.

Based on the information provided, which two animals compete the most for food?

• Deer and Squirrel

• Squirrels and Bluejays

• Deer and Rabbits

• Squirrels and Rabbits

Which population of organisms in the energy pyramid MOST likely belongs to the tropich level containing only herbivores.

• Grass

• Prairie Dog

• Coyote

• Vulture

What percent of the avaible energy is passed from one level of an energy pyramid to the next?

• 1000%

• !00%

• 10%

• 1%

In a chicken pen, chicken waste products, chicken feces, are decomposed by organisms such as fungi and bacteria. These are eaten by animals such as roaches. Larger animals like frogs eat the roaches.

Which correctly represents the energy flow as described?

• fungi- bacteria- roaches- chicken feces

• chicken- chicken feces- roaches- frogs

• bacteria- roaches- fungi- frogs

• chicken feces- bacteria- roaches- frogs

If water pollution causes a decrease in the number of krill, which populaiton will decrease the MOST in number?

• Squid

• Seal

• Seagull

• Blue Whale