Baby Oysters Summative Assessment Review

What do arrows show in a food web?

• Flow of energy

• What animals like to eat

• Population size

• Abiotic factors

How much energy flows up each trophic level of an ecosystem?

• 1%

• 10%

• 30%

• 100%

When a cow eats grass, what happens to the energy that does NOT go from the grass to the cow?

Answer explanation

• Used during hunting or digestion, lost as heat, discarded as waste, not consumed

Flies are part of which trophic level(s) of an ecosystem?

• Producer

• Primary consumer

• Secondary consumer

• Decomposer

The number of living organisms that a region can support sustainably (without environmental degradation) refers to:

What are some examples of abiotic factors that limit carrying capacity?

Answer explanation

Water, space, climate, geography, natural disasters. amount of sunlight, altitude

Sea anemones provide protection from predators for Clownfish. In return, Clownfish keep anemones free of parasites and provide them with nutrients. This relationship, where both organisms benefit, is known as:

Answer explanation

Symbiotic also correct

Which of the following shows the correct order of trophic levels, starting with the sun?

• Sun, primary consumer, producer, secondary consumer, top predator

• Sun, producer, primary consumer, secondary consumer, top predator

• Sun, top predator, secondary consumer, primary consumer, autotroph

• Sun, secondary consumer, top predator, autotroph, primary consumer

Answer explanation

Autotroph is another word for producer. Top predators are also called tertiary consumers.

Increasing levels of carbon dioxide in the atmosphere leads to ocean

What is one impact of humans burning fossil fuels?

Answer explanation

Increased carbon dioxide levels in the atmosphere, increased greenhouse gases, global warming, climate change, ocean acidification, loss of life