Chapter 3 Ecology Test MHS Garcia

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

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

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

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

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

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

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

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

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

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

To produce food autotrophs capture energy from sunlight or

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

Water can enter the atmosphere through the process of evaporation and

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

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

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

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

Movements of energy & nutrients through living systems are different because

Green plants are

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

The algae at the beginning of the food chain are:

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

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

Planting eating animals such as cows are called

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

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

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

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

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

What animals eat both producers and consumers?

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

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

Organisms need nutrients in order to

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

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

Nitrogen fixation is carried out primarily by

What is an organism that feeds only on plants called?

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

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

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