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Biomes Unit Test . Review. Which of these best describes biomes? A. large ecosystems that have distinctive organisms and a particular climate B. a group of individuals of the same species that live together in the same area C. a system made up of parts that work together

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Which of these best describes biomes?

A. large ecosystems that have distinctive organisms and a particular climate

B. a group of individuals of the same species that live together in the same area

C. a system made up of parts that work together

D. external conditions that affect an organism

What primary factors determine the type of biome that can become established in a geographic location?
  • Average annual temperatures
  • Latitude
  • Geographical features (mountains, large bodies of water, etc.
  • Annual Precipitation
  • Altitude
Which biome is marked by the number 1?






Temperate Deciduous Forest

Tropical Rainforest

Which biome is marked by the number 2?

Taiga or Boreal Forest





Temperate Deciduous Forest

Tropical Rainforest

Which biome is marked by the number 3?






Temperate Deciduous Forest

Tropical Rainforest

Which biome is marked by the number 4?






Temperate Deciduous Forest

Tropical Rainforest

Which biome is marked by the number 5?

Temperate Deciduous Forest





Temperate Deciduous Forest

Tropical Rainforest

Which biome is marked by the number 6?

Tropical Rainforest





Temperate Deciduous Forest

Tropical Rainforest

Which biome is marked by the number 7?

Alpine Tundra





Temperate Deciduous Forest

Tropical Rainforest

Which terrestrial biome has the greatest biodiversity?
  • Tropical Rainforest
  • Temperate deciduous forest
  • Taiga (Boreal Forest)
  • Tundra
Jade and her family go camping in a forested area in the eastern U.S. While sightseeing, they see a family of raccoons, several whitetail deer, a gray fox, and even a black bear feeding in a blueberry field. In what biome are they most likely camping?
  • Tropical Rainforest
  • Desert
  • Temperate Deciduous Forest
  • Taiga
Heavy rainfall and uneven, hilly terrain in the tropical rainforest biome causes nutrients on the forest floor to be washed away quickly. How have tropical rainforest plants adapted to this environmental issue?
  • They have deep roots that can reach nutrients stored underground.
  • The roots of all TRF plants have nitrogen-fixing bacteria that provide them with all the nutrients they need
  • They have wide-spreading roots that are near the surface that are able to absorb nutrients quickly before they wash away.
Which animal adaptations would be the most useful in the tundra biome?
  • a. Thick fur and fat/blubber
  • b. Ability to migrate from the tundra in winter.
  • c. Ability to eat rough foods like lichen or moss.
  • d. Ability to change color in winter (to white)
  • e. All of the above
If Rakim wanted to study biodiversity in the tropical rainforest, which type of work station would be best suited for making observations?
  • a. A treehouse or platform connected by rope or steel cable bridges.
  • b. A hidden blind on the forest floor.
  • c. A small wooden structure in plain view to prevent animals from attacking.
In which biome would you most likely find plants with the following characteristics?
  • Small waxy leaves to prevent water loss through transpiration.
  • Widespread roots to absorb water quickly before it evaporates.
  • Deep tap roots to reach groundwater.
  • Tropical Rainforest
  • Tundra
  • Desert
  • All of the above
While driving his Jeep through the Sonoran Desert in the middle of the day, Jake complains that he hasn’t seen hardly any animals roaming throughout the cacti and other vegetation. What is the most likely explanation for the lack of animals?
  • a. An abundance of predators has completely depleted the population of smaller animals.
  • b. Most of the animals will be in burrows or in shade during the day.
  • c. Due to the high heat. Lack of water, and dangerous UV rays, deserts cannot support life.
The shaded area on this map of North America shows the range of moose habitat. Based on this map, moose are most likely found in what biome?

Temperate Deciduous Forest

Tropical Rainforest



Which terrestrial biome experiences the most dramatic change in animal populations between its summer and winter?

The tundra because of the huge migration of waterfowl like ducks, geese, swans, and cranes.

Grasslands because most animals leave the grasslands in the winter and return in the spring.

Deserts because most desert animals leave the desert in the early summer and return once the weather cools down a bit.

-packrats 5

sidewinder rattlesnake 1

collared lizard 3

horned lizard 8

coyotes 2

  • Sydney found an old science journal that belonged to her grandfather in her attic. On one page was a tally of animals he had observed on one trip he had taken as a young man:
  • Which geographical region was he most likely visiting when he collected this tally?

Tropical rainforest

Temperate deciduous forest

Tropical grassland


In the 16th and 17th centuries, horses escaped from Spanish explorers and developed into wild herds that did especially well in the North American Great Plains region. Why were these horses able to adapt so well to this region?
  • There were no predators on the plains that could take down large animals like horses or bison (buffalo.)
  • b. The ancestors of these horses were native to the steppes of Asia (grasslands), so these wild horses were well adapted to the North American grasslands.
  • c. Wild horses eat primarily leaves from small shrubs or bushes, and the North American grasslands used to have an abundance of these types of plants.
  • d. All of the above
The tundra and the desert biomes both receive about the same amount of annual precipitation. During the short summer, the tundra is dotted with thousands of small ponds and shallow, slow moving streams while the desert seldom holds little if any visible surface water. What is the best explanation for this?
  • Permafrost prevents the water from draining into the soil.
  • b. The low angle of the sun results in very slow evaporation.
  • c. The tundra is relatively flat, so most of the water does not drain away into rivers.
  • d. All of the above
Which geographical region experiences several weeks each year where the sun never rises above the horizon?

a. The Gobi Desert

b. The Arctic Tundra

c. The Amazon Rainforest

d. All of the above, depending upon the season.

The Camel’s Hump is a mountain in Vermont that is only a few miles from where Mr. Moore’s parents have a house. As Mr. Moore and his family start their hike up Camel’s Hump, they pass through glades of broadleaf, deciduous trees like sugar maple and red maple. Two-thirds of the way up, most of the trees are small conifers like spruce and balsam fir. Eventually they reach an altitude where there are no more trees but there are small patches of small grass, lichens, and moss. What three “biomes” did the Moore’s experience during their hike?
  • temperate deciduous forest- taiga like coniferous forests- tundra (alpine tundra).
  • b. grasslandtropical rainforest arctic tundra
  • c. grasslandtemperate deciduous forestarctic tundra
If you had the opportunity to fly around the earth above the Equator, what terrestrial features would you spend most of your time observing?

Amazon rainforest Congo Rainforest Indonesian Rainforest

temperate forest

tropical rainforest

alpine tundra

Epiphytes are plants like bromeliads and orchids that grow high up on the trunks or branches of large trees. Where would be the best location to observe a wide diversity of epiphytes?

The canopy in the Amazonian Rainforest

Areas of Taiga in Northern Siberia

The steppes of central Asia.

All of the above will have many species of epiphytes.

This biome is characterized by areas of open grassland with very few trees. Several large land animals inhabit this biome including elephants, giraffes, zebras, and rhinoceros.

The Mongolian steppes

The African Savanna

The Great Plains

The Amazon Rainforest.

The populations of grassland animals in North America and Africa have decreased dramatically over the past two hundred years. What is the main reason for this decline?

a. Climate change has transformed most of the grasslands into desert

b. Primarily loss of habitat to ranching and farming.

c. A dramatic increase in the number of predators in the Great Plains.

d. All of the above

Which biome has the distinction of having the lowest average temperature AND the lowest annual precipitation?

Temperate grasslands of Central Asia

The prairies of North and South Dakota

The Boreal Forest belt in Siberia

The tundra of Northern Canada

Emily Olive and her family are discussing a family trip this summer. They want to see as many different species of plants and animals as possible. If you were the family’s travel agent, which of the following regions would you suggest to see the greatest diversity of plants and animals?

Sarstoon-Temash National Rainforest in Belize

The Kalahari Desert of southern Africa

Denali National Park in part of Alaska’s tundra region.

The Kola-Korelian temperate forests of eastern Russia.

Which of the following animals can be found in the tundra year-round?

musk ox, Canada geese, black bears, bullfrogs, water moccasins, and hummingbirds.

caribou/reindeer, lemmings, musk oxen, ptarmigans, Arctic foxes, Arctic hares

snow geese, mallard ducks, Arctic wolf, anole lizard

Whitetail deer, moose, Arctic hares, Arctic wolves, raccoons, and lemmings

A pharmaceutical company wishes to send a team of scientists to the Congo Basin in Africa to meet with tribal healers from various rainforest tribes. What is the most likely purpose for this visit?

To negotiate a contract for timber rights in the rainforest

To discuss where to establish pharmacies in villages near the rainforest.

To discuss the healing properties of certain rainforest plants in the hopes of developing a new medicine.

Colby and his brother, Waverly, often go crabbing and shrimping in creeks that are flooded each day by a mixture of salt and fresh water. In what type of habitat are they fishing?

a. coral reef

b. upland swamp

c. lagoon

d. estuary

Which of the following are not examples of tundra plant adaptations?

a. Able to grow in thin or poor soil; Able to withstand extreme cold.

b. Short plants with shallow root systems and small, waxy leaves.

c. Able to carry out photosynthesis under low light conditions.

d. Many capable of asexual reproduction (which is quicker than sexual reproduction.)

e. Deep tap roots that can reach water below the permafrost and large, dark leaves that catch more of the weak rays from the sun.

Temperate grasslands are found in temperate regions where rainfall rates are between 25 and 75 centimeters (cm) per year. If the rainfall rates over the next 100 years increased to 200 cm per year, similar to that of tropical rainfall rates, how would the region most likely be affected?

Less solar radiation would enter the region.

B. Larger plants and trees would take over the region.

C. The region would become a habitat for large and small sea organisms.

D. The primary producers in the region would have less ability to recycle carbon.

The illustration below shows an ocean off the coast of a continent.

Which of the labeled areas will have the highest concentration of living organisms?

1 2 3 4

This packrat spends most of the day sleeping in its burrow to avoid high daytime temperatures. It is processing what little water it needs from the seeds it collects. To which environment is this mouse best adapted?


B. Marine

C. Desert

D. Tundra

Imagine you are Kayla’s travel agent. She wants to travel to a part of the world that is in a biome like that of the eastern United States. Where would you recommend she visit?

Central Europe or Eastern Asia

Northern Africa

The northern half of South America

Northern Canada

The data in the table below is most likely from which biome?



Temperate Deciduous Forest



Donovan and his family visited a region last summer that was semi-arid, had few trees, and was home to a number of ground-nesting birds like the pheasant. What biome did they most likely visit?

a. Tundra b. Taiga c. Grassland d. Desert

A visitor to the area marked in green might see which of the following animals?

a. pheasants

b. prairie dogs

c. pronghorn antelope

d. Black-footed ferrets

e. All of the above

This graph plots data related to temperature and precipitation. Which biome is most likely reflected in this graph?

a. Tropical rainforest b. Tundra c. Desert d. Temperate Forest

Yellowstone National Park contains areas representing several biomes. In much of Yellowstone, animals like moose, elk, wolverines, and gray wolves live within forests of spruce and fir. What type of habitat is best represented in these areas of Yellowstone?

a. Coniferous forest like the Taiga

b. Temperate grassland

c. Tundra

d. Tropical rainforest

Decomposers like fungi and slime mold can survive in many habitats, but most do best in habitats that are warm and have plenty of moisture. Where would you most likely find the largest and most diverse populations of these decomposers?

Temperate deciduous forests in Pennsylvania.

An area of tundra in northern Siberian.

Yasuni National Rainforest in Equador

The steppes of Mongolia

Why are estuaries important to the overall health of a coastal ecosystem?

a. They filter contaminants or pollutants from the water.

b. They are nurseries for many marine animals.

c. They protect the coasts from storm waves and sometimes flooding.

d. All of the above

The most important limiting factor in most terrestrial biomes is

Annual precipitation

Distance from the Equator

The size and diversity of the predators

The proximity of the area to rivers or streams

Why are tropical grasslands like the African Serengeti able to support mores species of plants and animals (even some areas with trees) than the temperate grasslands of North America and Asia?

The soil quality in the tropical grasslands contains more abiotic material.

Tropical grasslands generally receive more annual precipitation and have a longer growing season than temperate grasslands

Farmers near the Serengeti plant food specifically for the grazers during the dry season.

All of the above.

As you follow the dotted arrow from Norway into central Europe, what noticeable changes in vegetation will you most likely observe?

The tundra of southern

Norway will transition into grasslands in central Europe.

b. The Boreal Forests of Norway will gradually transition to temperate grassland in central Europe.

c. Forests that shed their leaves every winter in Norway will gradually change to coniferous forest in central Europe.

d. The forest will change from coniferous evergreens to deciduous trees.

Which of the following statements about deserts is NOT accurate?
  • Deserts can be either hot or cold depending upon their location and the time of the year.

b. Deserts often form on the downwind side of large mountain ranges.

c. Deserts rarely support year-round populations of plants or animals.

d. Deserts can be arid (extremely dry) or semi-arid (mostly dry).

What is the primary reason animals migrate?

To find food.

To escape predators.

To locate water that isn’t frozen.

To find mates.

Many common houseplants are tropical rainforest plants. What is the best explanation for why these plants grow so well indoors?

They are accustomed to the dry, indoor climate that is low in humidity.

They prefer artificial light to natural sunlight.

They are adapted to living in low light and marginal soil conditions of the rainforest understory or forest floor.

This map shows the distribution of American Black Bears throughout North America. Which types of habitat do Black Bears prefer according to this map?

a. Heavily forested areas.

b. Arctic tundra

c. Temperate Grasslands

BTW- This is what an ASIATIC Black Bear looks like.

What are some adaptations that enable black bears to inhabit the northern sections of this map?

a. Ability to hibernate

b. Thick fur/fat

c. Ability to eat a wide variety of plants, fungi, or animals

d. All of the above

Which are the following are examples of limiting factors for the growth of trees in the tundra?
  • A very short growing season
  • Water is in the form of ice most of the year
  • Permanently frozen ground below 1 meter prevents root development of larger plants
  • All of the above
What do we know about the water that is pictured in this image?

It has a very high salt concentration near the mouth of the river.

The salinity (amount of dissolved salt in the water) increases the further from the river it is.

The salt concentration in the area where rivers spill into the ocean is essentially the same as the concentration further out to sea.

Which region of the ocean has the greatest biodiversity?

Coral reefs

Deep sea volcanic vents


Open ocean near the warm Gulf Stream

But these are a very close second

What plant adaptations are not common in the tundra biome?
  • Ability to grow deep tap roots that reach water below the surface that does not freeze.
  • Grow low to the ground so they can stay warmer and avoid being damaged by the wind.
  • Ability to tolerate extremely cold and long winters
  • Small leaves with a waxy coating to slow water loss through transpiration
  • The ability to conduct photosynthesis under low light conditions.
Based on your understanding of biomes, which statement is the most accurate with regards to the relationship between latitude and biomes?

a. The further north in latitude, the greater the amount of precipitation (though much of it is as snow.)

b. The greater the latitude, the colder and drier it becomes (usually.)

c. The further west you move in latitude, the colder and drier it becomes.

Short grasses, lichens, small shrubs, and moss are the dominant producers in which terrestrial biome?


Temperate Forest


Tropical Grasslands

A person visiting the tundra biome during the middle of its summer might expect what kind of weather conditions?
  • cold, temperatures still slightly below freezing
  • Temperatures slightly above freezing, periods of heavy freezing rain, sleet, or hail.
  • Cool temperatures (in the 60s), breezy, partly cloudy.
Hunter accidentally mixed his biomes card up. He needs to match his map card with this animal adaptations information card. Which biome map card should he match with the card with this information?
  • Thick, tough skin or an exoskeleton to slow water loss.
  • The ability to burrow to escape the heat of the day.
  • Releasing only minimal amounts of water in waste.
  • The ability to hunt or feed at night.
  • Wide, spreading feet that make walking on sand easier.
  • The ability to survive primarily from the small amount of water that is in the food the organism eats.
  • Large ears to dissipate heat.
  • Tropical grassland
  • Temperate grassland
  • Desert
  • Tundra
Which map card should he match with this producer adaptation and information card ?
  • Drop leaves during periods of prolonged drought.
  • Small waxy leaves to prevent water loss through transpiration.
  • Ability to store water in leaves or trunk.
  • Widespread roots to absorb water quickly before it evaporates.
  • Deep tap roots to reach groundwater.
  • Tropical grassland
  • Temperate grassland
  • Desert
  • Tundra
Which of the following is a factor leading to desertification?

a. Global climate change

b. Overpopulation (carrying capacity exceeded.)

c. Overgrazing of livestock

d. Over-farming a parcel of land

e. All of the above

What is the primary explanation for the dramatic difference in the animal populations of the tundra between winter and summer?

All tundra animals leave the region in the winter.

Millions of migratory waterfowl use the tundra as a breeding area in the summer.

Arctic hares and ptarmigan breed in the winter when there are no predators.

The tundra and the desert biomes both receive about the same amount of annual precipitation. During the short summer, the tundra is dotted with thousands of small ponds and shallow, slow moving streams while the desert seldom holds little if any visible surface water. What is the best explanation for this?

a. Permafrost prevents the water from draining into the soil.

b. The low angle of the sun results in very slow evaporation.

c. Most of the tundra is relatively flat, so the water does not drain away.

d. All of the above

Which of the following is NOT an adaptation of arctic tundra animals?
  • The ability to burrow
  • Thick fur and fat
  • Ability to change colors in winter
  • Ability to migrate from the tundra
Both the tundra and desert biomes receive (on average) approximately _____________ in. (__________ cm) of precipitation each year.

a. 10 in/25 cm b. 20 in/50 cm c. 30 in/75 cm

People living in the tundra rely very little (if at all) on gardening or gathering plants for food. Why?

a. The growing season is too short for growing most food plants.

b. The soil is thin and has a low nutrient level.

c. Not many tundra plants are edible to humans.

d. All of the above

8. Which producers are would a visitor to the tundra observe?
  • medium-size groves of trees, tall grasses
  • Short grasses, lichen, short shrubs, moss
  • Cacti and other succulents like aloe vera
  • All of the above
Imagine you are Kayla’s travel agent. She wants to travel to a part of the world that is in a biome like that of the eastern United States. Where would you recommend she visit?

Central Europe

Central Canada


Northern Norway

Marvin and Matilda have lived southern Florida for all of their lives. Both want a change of scenery. They want to move to a forested area that has four very distinct seasons and where the leaves turn bright colors like red and gold in the early fall. Which region of the U.S. would best suit those characteristics?

The Great Plains

The Appalachian Mountains or the Northeastern U.S.

New Mexico or Arizona

Any of the above

Which African habitat most likely has the greatest biological diversity?

The savanna grasslands of The Serengeti.

The rainforests of the Congo Basin

The highlands of Ethiopia

The Kalahari Desert

Resurrection ferns and Spanish moss are commonly seen in our area growing on the large branches of Live Oak trees like the one in the image below. These species of plants are examples of aerial plants known as a(n)__________________





What biome is characterized by year-round warm temperatures, daily precipitation, and a dense forest with trees 35-60 meters (120-200 feet) in height?

Temperate deciduous forest

Boreal Forest

Tropical Rainforest


What global ecological effects are likely if widespread deforestation of tropical rainforests and taiga continue at the current rate?

A decrease in atmospheric oxygen

An increase in atmospheric carbon dioxide

Changes in the global climate

All of the above

Which biome is characterized by trees 20-30 meters in height (65-100 ft.) that lose their leaves for part of the year?

a. Taiga (Boreal Forest)

b. Temperate Deciduous Forest

c. Tropical Rainforest

Which of the following adaptations is NOT common to plants growing on or near the rainforest floor?

a. Large leaves

b. Extra Chlorophyll

c. Climbing Ability

d. Small, waxy leaves

e. A design that sheds water

Epiphytes are aerial plants that grow on the trunks or large branches of trees. These plants benefit by receiving more sunlight in their elevated spots than they would if they were on the forest floor. The host tree is not helped, but it is not harmed by the epiphytes either. What type of symbiotic relationship is demonstrated here?





Of the major earth biomes (tundra, grassland, desert, temperate deciduous forest, boreal forest/taiga, and tropical rainforest), which is not found in the United States (counting Alaska and Hawaii?)
  • Tundra
  • Taiga
  • Grassland
  • Temperate Deciduous Forest
  • Desert
  • Tropical Rainforest
  • All of these can be found somewhere in the U.S.
This process demonstrates the process where nutrients from the ocean floor are carried up to the surface where they can be used by producers. This process is known as

a. Phototropism b. Downgrading c. Upwelling

Plants growing near the ground in tropical rainforests often have dark green leaves or leaves that are very large. What is the benefit of these adaptations?

They are able to gather more of the sunlight that trickles to the forest floor. Remember, only 2% of the sunlight makes it to the forest floor in the TRF.

Describe how the type of flood seen in this deserted area of Nevada differs from the types of flood that occur in rivers like the Ogeechee.

“Flash floods” like this can appear seemingly out of nowhere as a result of precipitation many miles away.

Most marine life is found in shallow areas near the coast. What factor makes these zones more favorable for life?

These regions have more nutrients from rivers and from upwelling; the algae and marine plants need these nutrients and must be within the sunlight zone for photosynthesis.

What is being demonstrated in this graph?

The relationship between annual temperature and precipitation and the type of biome that develops.

Poor farmers in areas near tropical rainforests frequently clear a couple of acres of forest in order to grow food to feed their families. Unfortunately, they are able to grow food only for 2-3 years before the land no longer produces. What is the best explanation for the short period of soil viability ?

The soil of the rainforest is generally very thin and nutrient poor to begin with. The nutrients in the soil would be used up very quickly by the farmer’s crops leaving the soil unable to support plant growth.

What does the shape of the lower trunks of these trees most likely indicate about the tree itself?

The root system for the tree is very shallow or the ground may be very soft. This shape trunk provides the tree with extra support or stability.