IBI Test 5 (Ecology)

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

Energy flow in an ecosystem begins with

What is indicated by the letter B?

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

Every ecosystem is characterized by which fundamental phenomena?

Which sequence would represent a plausible food chain?

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

Organims that feed on dead matter are called

What is the biosphere made up of?

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

Grasslands are called ____________ in North America.

Freshwater communities can be classified according to nutrient status as either

Nitrogen makes up __________% of the atmosphere by volume.

Humans are biologically adapted to be

___________ are microscopic organisms that float in water.

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

What is indicated by the letter C?

Which type of animal feeds exclusively on plant material?

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

Which tundra occurs above the timberline on mountain ranges?

What is indicated by the letter C?

The most common epiphytes are related to

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

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

Phosphates CANNOT be found in

The trees found in temperate deciduous forests include

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

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

An ecological pyramid contains all of the following EXCEPT

What is indicated by the letter A?

What is indicated by the letter D?

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

What is ecology?

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

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

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

Characteristics of cacti do NOT include

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

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

Deserts nights are cold because heat escapes easily into the

What is indicated by the letter A?

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

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

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

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

Fungi and bacteria are detritus-feeders, also known as

Given enough time, all water eventually returns to the

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

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

The taiga is a __________ forest.

The division of the open ocean include ________ divisions.

The sun's rays cause the water

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

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

The most highly productive community below would be

Deserts can occur in regions where annual rainfall is less than

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

The broad-leaved trees of the temperate forest are termed

What does the theory of competitive exclusion state?

The biosphere can be divided into large biogeographical units called

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

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

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

The zooplankton are

The ground cover usually found in the taiga is

A detritus food chain begins

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

The types of aquatic communities are