Duplicate of Chapter 3 Ecology Test MHS Garcia

Question 1

The chemical substances that an organism requires to live are called:

Accepted Answer

nutrients

Question 2

An organism using energy to produce its own food supply from inorganic compounds is called a(n)

Accepted Answer

autotroph

Question 3

The algae at the beginning of the food chain are:

Accepted Answer

decomposers

Question 4

An organism that cannot make its own food is called a(an)

Accepted Answer

heterotroph

Question 5

What is the combined portions of Earth called in which all living things exist?

Accepted Answer

biosphere

Question 6

What animals eat both producers and consumers?

Accepted Answer

omnivores

Question 7

Green plants are

Accepted Answer

producers

Question 8

The rate at which organic matter is created by producers in an ecosystem is called

Accepted Answer

primary productivity

Question 9

Only about 10% of the __?__ in a trophic level is available to organisms at the next level.

Accepted Answer

energy

Question 10

What is an organism that feeds only on plants called?

Accepted Answer

herbivore

Question 11

The repeated movement of water between Earth's surface and the atmosphere is called

Accepted Answer

the water cycle

Question 12

Organisms need nutrients in order to

Accepted Answer

carry out essential life functions

Question 13

What is the original source of almost all the energy in most ecosystems?

Accepted Answer

sunlight

Question 14

Planting eating animals such as cows are called

Accepted Answer

herbivore/consumers

Question 15

Organisms that obtain nutrients by breaking down dead and decaying plants and animals:

Accepted Answer

decomposers

Question 16

Carbon cycles through the biosphere in all ofthe following processes EXCEPT:

Accepted Answer

transpiration

Question 17

What is the process by which bacteria convert nitrogen gas in the air to ammonia?

Accepted Answer

nitrogen fixation

Question 18

Movements of energy & nutrients through living systems are different because

Accepted Answer

energy flows in one direction and nutrients recycle

Question 19

Only 10% of the energy stored in an organism can be passed to the next level, the rest is

Accepted Answer

eliminated as heat

Question 20

A group of ecosystems that have the same climate and dominate communities is called a(an):

Accepted Answer

biome

Question 21

The total amount of living tissue within a given trophic level is called the

Accepted Answer

biomass

Question 22

Which of the following descriptions about the organization of an ecosystem is correct?

Accepted Answer

Species grouped in populations, which make communities.

Question 23

Water can enter the atmosphere through the process of evaporation and

Accepted Answer

transpiration

Question 24

All of the members of a particular species that live in the same area are called a(an)

Accepted Answer

population

Question 25

Which of the following is NOT a basic method used by ecologists to study the living world?

Accepted Answer

classifying

Question 26

Which of the following organisms does NOT require sunlight to live?

Accepted Answer

chemo-synthetic bacteria

Question 27

All the interconnected feeding relationships in an ecosystem make up a food

Accepted Answer

web

Question 28

Branch of biology dealing w/ interactions among organisms & between organisms their environment

Accepted Answer

ecology

Question 29

The simplest grouping of more than one kind of organism in the biosphere is a(n)

Accepted Answer

community

Question 30

which type of pyramid shows the amount of living tissue at each trophic level in an ecosystem?

Accepted Answer

a biomass pyramid

Question 31

A snake that eats a frog that has eaten an insect that fed on a plant is

Accepted Answer

third-level consumer

Question 32

What method do ecologists use when they count the population of certain species?

Accepted Answer

observing

Question 33

To produce food autotrophs capture energy from sunlight or

Accepted Answer

chemicals

Question 34

Scientists classify the nitrogen, carbon, and water cycles as:

Accepted Answer

Biogeochemical

Question 35

What the steps in movement of energy, an organism's feeding status in an ecosystem?

Accepted Answer

trophic level

Question 36

Organisms that break down organic matter and return it to the environment are called

Accepted Answer

detritivores/decomposers

Question 37

Nitrogen fixation is carried out primarily by

Accepted Answer

bacteria

Question 38

The organisms in the ocean with the smallest total biomass are the most likely

Accepted Answer

sharks

Question 39

Which is most likely to be a limiting nutrient in a freshwater pond?

Accepted Answer

phosphorus

Question 40

Living organisms require nitrogen to make_?_, which are used to build proteins.

Accepted Answer

amino acids

Duplicate of Chapter 3 Ecology Test MHS Garcia

Questions 40

Duplicate of Chapter 3 Ecology Test MHS Garcia

Questions 40