Chapter 3: Communities, Biomes, Ecosystems

Question 1

Lack of iron in the photic zone restricts the plankton populations Iron is what kind of factor?

Accepted Answer

Limiting

Question 2

If fire were suppressed on a temperate grassland, what species do you think would increase?

Accepted Answer

Trees

Question 3

Which zone has proven to be the most difficult for marine biologists to explore?

Accepted Answer

abyssal zone

Question 4

How is a boreal forest different from tundra?

Accepted Answer

The ground remains warmer in boreal forests

Question 5

Warm temperatures and large amounts of rainfall characterize what type of biome?

Accepted Answer

tropical rain forest

Question 6

A biotic or abiotic factor that restricts the numbers of organisms in an ecosystem is called a

Accepted Answer

limiting factor

Question 7

The first organisms to appear during ecological succession are called ____.

Accepted Answer

pioneer species

Question 8

Which of these species might be classified as a pioneer species?

Accepted Answer

lichen

Question 9

What does this picture demonstrate?

Accepted Answer

Increased altitude or latitude causes a temperature decrease

Question 10

Of the zones shown here, which is able to support autotrophic producers?

Accepted Answer

photic

Question 11

Low levels of sunlight and oxygen characterize which lake zone?

Accepted Answer

profundal

Question 12

What is the name for large geographic areas with similar Climax communities

Accepted Answer

Biomes

Question 13

Where is the largest percentage of water located?

Accepted Answer

oceans

Question 14

Conifer trees dominate boreal forests rather than tundra because of

Accepted Answer

a lack of permanently frozen soil

Question 15

Which biome occurs in the United states and once contained huge herds of grazing herbivores?

Accepted Answer

Grassland

Question 16

Which would be the beginning of primary succession?

Accepted Answer

Lichen growing on cooled lava

Question 17

Which explains why few animal species live in a fast-flowing river?

Accepted Answer

Currents prevent accumulation of most organic matter.

Question 18

Which statement is true based on this picture?

Accepted Answer

Steelhead can't tolerate temp above or below a certain limit

Question 19

A ____ is an area where the annual rate of evaporation exceeds the rate of precipitation

Accepted Answer

desert

Question 20

Which single feature is responsible for variation of climate in different parts of the world

Accepted Answer

angle of incoming sunlight

Question 21

What is a climax community?

Accepted Answer

stable community with little change in species numbers

Question 22

What defines a savanna

Accepted Answer

grasses with trees intermixed

Question 23

The average weather conditions affecting a biome is called ____.

Accepted Answer

climate

Question 24

Which statement would you NOT use to describe succession?

Accepted Answer

it is random

Question 25

One community replacing another as a result of changing abiotic and biotic factors is called __

Accepted Answer

ecological succession

Question 26

Which place would you most likely find pioneer species growing?

Accepted Answer

Newly formed volcano

Question 27

Material that is deposited by water, wind, or glaciers is called ____.

Accepted Answer

sediment

Chapter 3: Communities, Biomes, Ecosystems

Questions 27

Chapter 3: Communities, Biomes, Ecosystems

Questions 27