Docsity
Docsity

Prepare for your exams
Prepare for your exams

Study with the several resources on Docsity


Earn points to download
Earn points to download

Earn points by helping other students or get them with a premium plan


Guidelines and tips
Guidelines and tips

Introduction to Ecology: Terms and Concepts, Quizzes of Biology

Definitions and explanations for various terms and concepts in the field of ecology, including community, species richness and diversity, food webs, symbiosis, ecological niche, habitat, energy conversions, and water resources.

Typology: Quizzes

Pre 2010

Uploaded on 12/09/2009

char-char44
char-char44 🇺🇸

2 documents

1 / 4

Toggle sidebar

This page cannot be seen from the preview

Don't miss anything!

bg1
TERM 1
What is a community?
DEFINITION 1
is an assemblage of populations interacting with one another
within the same environment.
TERM 2
Species Richness
DEFINITION 2
Species richness is the number of different types of species
in a community
TERM 3
Species diversity
DEFINITION 3
A combination of species richness and relative abundance
Low diversity example: Community with 10 species and 100
individuals 90 in one species One each in the other 9 species
High diversity Community with 10 species and 100
individuals Each species has 10 individuals
TERM 4
What are Food Webs?
DEFINITION 4
illustrate how species feed on each other in community.
TERM 5
What is Symbiosis?
DEFINITION 5
Symbiosis is a close association between two species where
at least one species is dependent upon the other.
pf3
pf4

Partial preview of the text

Download Introduction to Ecology: Terms and Concepts and more Quizzes Biology in PDF only on Docsity!

What is a community?

is an assemblage of populations interacting with one another within the same environment. TERM 2

Species Richness

DEFINITION 2 Species richness is the number of different types of species in a community TERM 3

Species diversity

DEFINITION 3 A combination of species richness and relative abundance Low diversity example: Community with 10 species and 100 individuals 90 in one species One each in the other 9 species High diversity Community with 10 species and 100 individuals Each species has 10 individuals TERM 4

What are Food Webs?

DEFINITION 4 illustrate how species feed on each other in community. TERM 5

What is Symbiosis?

DEFINITION 5 Symbiosis is a close association between two species where at least one species is dependent upon the other.

What are the Types of Symbiosis?

Parasitism -In a parasitic relationship, the parasite benefits and the host is harmed. -Parasites derive nourishment from their host. Commensalism -In a commensalistic relationship, neither party is harmed. Mutualism -In a mutualistic relationship, both partners benefit. Lichens have traditionally been regarded as mutualistic TERM 7

Characteristics of a Community

DEFINITION 7 Communities have diversity (species richness and relative abundance). Communities have physical structure Organisms in a community compete for resources Organisms in a community are organized into food webs. TERM 8

what is an ecological niche?

DEFINITION 8 is defined by the role an organism plays in its community, including its habitat and how it interacts with other species in the community. Usually defined in terms of feeding habits TERM 9

what is a habitat?

DEFINITION 9 is where it lives in the community. TERM 10

How does the 2nd Law of Thermodynamics

influence how energy

DEFINITION 10 each time energy is converted from one form to another, some of the energy is always degraded to a lower quality, more dispersed, less useful form No system can convert energy form one to another form with 100% efficiency

Global Water Crisis

Limited amount of fresh water Desalinization is expensive and requires large amounts of energy Aquifers are being depleted Groundwater is contaminated Sewage, agricultural runoff, and industrial chemicals pollute rivers and lakes.