Question 1

What types of root systems are found on plants that grow in the tundra?

Accepted Answer

shallow root systems

Answer

deep root systems

Answer

a blend of all varieties of root system depths

Question 2

why do plants in the tundra have shallow root systems?

Accepted Answer

they cannot grow through the permafrost

Answer

they are soaked by heavy rains

Answer

there is very little soil in the tundra

Answer

they are trying to absorb the small amount of rain that only soaks in to the top of the soil

Question 3

How do plants in the tropical rain forest gather light energy?

Accepted Answer

with large leaves to absorb the sun

Answer

with severe competition for space

Answer

with large trunks and root systems

Question 4

How is a tundra biome and a desert biome similar?

Accepted Answer

both biomes are characterized by little precipitation

Answer

both biomes have dry, rocky soil

Answer

both biomes lack plants or animals

Answer

both biomes are hot during the day and cold at night

Question 5

Where would the tropical rain forest be on a globe?

Accepted Answer

closest to the equator

Answer

north of the united states

Answer

in the polar regions

Answer

in the western united states

Question 6

What is a way in which the arctic snow hare has adapted to its environment?

Accepted Answer

white coat to hide from predators

Answer

strong paws to attack prey

Answer

small ears in order to hear high frequency noises

Answer

sharp teeth to defend itself

Question 7

which of the following is a biotic factor in an ecosystem

Accepted Answer

type of trees

Answer

amount of water

Answer

temperature of air

Answer

type of soil

Question 8

Why would a population of a species of animal rise over the first few years and then stay constant (the population) for the next few years?

Accepted Answer

competition for resources limits the population

Answer

the resources in the area ran out

Answer

Predators were introduced into the ecosystem

Answer

a new disease came into the ecosystem

Question 9

how will a graph of an animal population vs time reaching the carrying capacity look?

Accepted Answer

it will show a steady rise then level off into a flat horizontal line

Answer

it will be a vertical line

Answer

it will show a steady increase

Answer

a horizontal line followed by a steady decline

Question 10

which of the following shows the greatest biodiversity?

Accepted Answer

a desert with many different types of plants and animals

Answer

a tundra with many varities of penguins

Answer

a tank of goldfish

Answer

a pine tree with three groups of birds

Question 11

which statement best describes ecosystems?

Accepted Answer

they constantly change in different ways over time

Answer

they can never change once they are established

Answer

they can exist for only a specific length of time

Answer

they always revert back to their original state

Question 12

What is the major difference between primary and secondary succession

Accepted Answer

All of the above

Answer

Primary succession needs to build soil first

Answer

Secondary begins right away growing plants

Answer

primary succession takes longer than secondary succession

Question 13

how does high biodiversity make an ecosystem stronger

Accepted Answer

high biodiversity means the consumers have more sources of food which helps them survive during disease, new predators, etc

Answer

High biodiversity means less consumers

Answer

high biodiversity allows for less competition

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