Name that Biome!
Cycles of Life
Organisms and their relationships
True/False
Ecosystems
100

A place where a river flows into an ocean. Water is salty, but not as salty as the ocean.

Estuary

100

What diagram  shows the amounts of energy that flow through each level of a food chain?

energy pyramid

100

In an ecosystem, birds depend on insects to survive. If someone spreads pesticide to control the insect population, what is most likely to happen as a result?

The bird population will decrease.

100

Animals get nitrogen by eating decomposers.

False


100

An organism that feeds off another organism and causes it harm.

parasite

200

Oaks, Elms, and Maple trees thrive in this biome.

Deciduous Forest 


200

How do carnivores obtain energy?

They eat animals.

200

Different kinds of plants living in the same area must compete for water. Which kind of plant has the greatest chance of survival? (think about their roots)

the plant with the largest root system

200

A decrease in rainfall in a rain forest might be a limiting factor for for animals and plants living there.

True


200

Name the four limiting factors and describe how limiting factors affect population.

Food, water, space, shelter. populations can only grow to a certain size and still have all of their needs met.

300

An area of warm, shallow water that doesn’t have many nutrients.

Coral Reef


300

The results of respiration are carbon dioxide and

water

300

Creatures that live in the deep ocean need to adapt to which environmental factors

High Pressure and the Darkness of the Deep Sea

300

Animals compete for resources, but plants do not compete.

False

300

Which adaptation best helps elk survive in the taiga biome?

thick fur

400

Found in the Midwest of America

Grassland/Prairie 

400

What role do decomposers play in ecosystems?

They break down waste and dead matter.

400

Both organisms need each other to survive in which of the following examples?

1. a microorganism living in the stomach of a wolf

2. a fungus and bacteria forming a lichen

3. a parasitic worm living in a fox’s bloodstream

4. a squirrel scaring insects off a tree into the path of birds

2.a fungus and bacteria forming a lichen

400

Energy in an ecosystem does not disappear.

True

400

The group of all the populations in an area is called a ____________

community

500

This biome protects inland areas from ocean waves.

Salt Marsh

500

When decomposers break down the remains of dead organisms, what do they make that can be used by plants?

nitrogen compounds

500

Corals have a symbiotic relationship with plant-like algae that grow inside them. How do the algae benefit the corals?

The algae help the corals make a hard outside coating.

500

The most abundant gas in the atmosphere is nitrogen.

True

500

In Africa, Nile crocodiles can often be seen lying in the sun, their jaws held open. Small white egrets perch on the crocodiles’ backs or hop in and out of their mouths. The birds also peck at the crocodile’s teeth, feeding upon the scraps of food embedded there. Although crocodiles eat some birds, they do not eat the egrets. What is the term for the relationship between the crocodiles and the egrets? Explain this relationship.

mutualism - symbiosis. both animals benefit. Crocodiles get their teeth cleaned and egrets get a food supply (and protection from predators).