Exam 16: Energy Flows and Nutrient Cycles

Primary succession is more common than secondary succession.

__________refers to the biotic and abiotic characteristics in the environment that determine species distribution.

The notion that the traits that help a species survive and reproduce are passed along more frequently than those that do not is known as

Epiphytic plants,such as various species of orchids (Orchidaceae),grow upon another plant,using the plants for physical support,but bringing no harm to the host plant.This is an example of which symbiotic relationship?

If a forest fire destroyed the vegetation in an area,but left some vestiges of the previously functioning community and the soil intact,what type of succession would follow?

An ecological niche is essentially the same thing as a habitat.

The net dry weight of all organic material in an ecosystem is known as

Together,three natural elements make up 99% of Earthʹs biomass.Which of the following is NOT one of those three elements?

Approximately how many plant and animal species have been classified?

An altitudinal community assemblage at a given latitude is often similar to an assemblage that covers a certain range of latitude.

Hydrogen,oxygen,and carbon together make up more than 99% of Earthʹs biomass.

The difference between the photosynthetic production of carbohydrates and the respiration loss of carbohydrates is known as

The study of the distribution of plants and animals,the diverse spatial patterns they create,and the physical and biological processes that produce Earthʹs species richness is called

A self-sustaining association of living plants and animals and their nonliving physical environment is termed a(n)

Describe the main abiotic ecosystem components.Give at least two regional examples of how these elements combine to form ecosystems.

Today,there are over 270,000 plant species with conductive tissues and material flow systems known as

Net primary productivity is a measurement of how much each individual plant photosynthesizes.

A lichen,which is a composite organism consisting of an alga and fungus,is an example of mutualism.

The specific,unique role that a species performs within a given area is known as a(n)

Organisms that share the same feeding level (e.g.primary producers,primary consumers,secondary consumers,etc.)are said to be at the same