Module 3 Ecosystem Dynamics

Question 1

What is a population

Answer 1

A group of organisms of the same species living together in an area at the same time.

Question 2

What are biotic factors in a ecosystem

Answer 2

Predation
Competition
Symbiotic relationships

Question 3

What is predation

Answer 3

A relationship where the predator kill and eat other animals

Question 4

What is competion

Answer 4

Where two or more organisms uses one or more common resources which are limited but valuable in survival

Question 5

What is symbiotic relationship

Answer 5

Interaction in which two organisms live together in a close relationship that is beneficial to at least one of them

Question 6

What is mutualism

Answer 6

Relationship where both organisms benefit eg. bee pollinating a flower

Question 7

What is commensalism

Answer 7

A relationship that benefits one species but not harms the other. eg. epiphytes on tree trucks to catch rain water and dissolve nutrients and being closer to the sunlight

Question 8

What is parasitism

Answer 8

Relationship where one(host) benefits and the other(parasite) is harmed eg. flea on dog

Question 9

What are some human impact that has made changes in an ecosystem

Answer 9

Increasing population
Agriculture
Introduced species
Land clearing