IBI Test 5 (Ecology)

Plants, aquatic algae, and phytoplankton play what role in an ecosystem?

The oceans are a primary reservoir for carbon in the form of

The idea that energy cannot becreated or destroyed, only changed from one state to another is

The sun's rays cause the water

Freshwater communities can be classified according to nutrient status as either

Global climate, and therefore the distribution of biomes, is dependent upon all EXCEPT

Grasslands are called ____________ in North America.

A transfer of nutrients from organism to organism in a sequence is called a(n)

Which tundra occurs above the timberline on mountain ranges?

Energy flow in an ecosystem begins with

During __, H₂O changes from a liquid to gas & during __ H₂O changes from a gas to a liquid.

What is indicated by the letter C?

The division of the open ocean include ________ divisions.

The area along the coastline which lies between the high and low tide marks isknown as the

Which type of animal feeds exclusively on plant material?

What is ecology?

Given enough time, all water eventually returns to the

Groundwater located in impermeable layers of rock is called a(n)

Characteristics of cacti do NOT include

What is indicated by the letter A?

What is indicated by the letter D?

Which biome supports the greatest variety and number of large herbivores?

In contrast to energy, __________ do/does cycle through large natural ecosystems.

On the Arctic tundra, only the topmost layer of earth thaws; the ____ is always frozen.

Which is considered the nursery of the sea b/c of high amount of nutrients, juvenile fish, etc?

Which sequence would represent a plausible food chain?

In a typical food chain, the group with the smallest number of individuals would be the

The place where a river empties into the sea is called a(n)

What is the biosphere made up of?

Approximately what percentage of energy in one trophic level is incorporated into the next one?

The trees found in temperate deciduous forests include

When numerous food chains link to each other in an ecosystem, it is known as a(n)

Features that determine how much rain falls on various parts of the continent are all EXCEPT

When moist air moves up a mountain range and loses its moisture, the leeward side is a

An ecological pyramid contains all of the following EXCEPT

What is indicated by the letter A?

What does the theory of competitive exclusion state?

A detritus food chain begins

These organisms break down organic matter and make inorganic matter available to plants

Which organisms provide the most of the nutrient supply in the ocean?

_____________  refers to the prevailing weather conditions in a particular region.

Deserts can occur in regions where annual rainfall is less than

The broad-leaved trees of the temperate forest are termed

Organims that feed on dead matter are called

Fungi and bacteria are detritus-feeders, also known as

Freshwater makes up __________% of the world's supply of water.

The taiga is a __________ forest.

The most highly productive community below would be

All organisms that feed at each link in a food chain comprise a(n)

Plants cannot use atmospheric nitrogen & depend on________ to make nitrogen available to them.

The types of aquatic communities are

The ground cover usually found in the taiga is

B/c only about 10% of energy of one trophic level is converted into biomass at the next level

The biosphere can be divided into large biogeographical units called

What is indicated by the letter B?

What is indicated by the letter C?

Every ecosystem is characterized by which fundamental phenomena?

Nitrogen makes up __________% of the atmosphere by volume.

___________ are microscopic organisms that float in water.

______are autotrophic organisms with ability to photosynthesize & to make food for themselves.

The most common epiphytes are related to

Phosphates CANNOT be found in

Large trees are NOT found in the tundra for all reasons below EXCEPT

Deserts nights are cold because heat escapes easily into the

With every energy transformation, some energy is degraded into a less available form such as

The main difference between a tropical rain forest and a savanna is the difference in

Humans are biologically adapted to be

The zooplankton are