E5 - Biotic interactions

Question 1

what are the types of Interactions between organisms in a community?

Answer 1

Competition
Predation
Symbiosis

Question 2

what is competition?

Answer 2

Interaction between 2 or more organisms competing for the same resource in a given habitat

Question 3

what is a interspecific competition

Answer 3

competetition Between different species

Question 4

what is intraspecific competition

Answer 4

a competetion that occurs between 2 members of the same species

Question 5

One organism eats another to obtain food is known as what?

Answer 5

preditation

Question 6

what is symbiosis

Answer 6

An interaction between two species

there are Three main types:

Mutualism – both species benefit

Commensalism – one species benefits, other is unaffected

Parasitism – one species benefits, other is harmed

Question 7

REMINDER:
As populations grow, each individual gets a smaller share of resources.
When this happens, the affected organisms become stressed. Some may die, others may not be able to reproduce.

Answer 7

As populations grow, each individual gets a smaller share of resources.
When this happens, the affected organisms become stressed. Some may die, others may not be able to reproduce.

Question 8

When # births = # deaths, the population is known as what?

Answer 8

equilibrium

Question 9

what is mimcry and how is this usefull for the prey?

Answer 9

mimcry is when animals defend themselves by mimicking other animals that are not haunted.

this is usefull for the prey because they are no longer and target and will not be haunt down for food.

Question 10

what is the carrying capacity? what are the effects of going beyond the carrying capacity?

Answer 10

carrying capacity is the maximum amount of individuals that a ecosystem can support. the effects of going beyond the carrying capacity include in envoirmental harm

Question 11

what prevents/controls the carrying capacity?

Answer 11

the envoirmental factors prevent the increase of organisms in a population and prevents organisms moving to different habitats

Question 12

what are biotic and abiotic factors that can affect the carrying capacity of a population?

Answer 12

Abiotic factors: sunlight, water, soil, air, weather, fire, drought

Biotic factors: competition, predation, reliance on other organisms for survival (ie mutualism), disease

Question 13

how can humans alter the carrying capacity of a ecosystem

Answer 13

Removing or adding resources to an ecosystem (eg. adding more water and nutrient-rich soil increases carrying capacity of trees in a woodland ecosystem)
- Loss or introduction of a species (eg. removing robins increases the carrying capacity of worms in a forest ecosystem)

Question 14

But even when humans do not interfere, populations will still naturally shift up and down or fluctuate. What natural factors do you think will affect populations?

Answer 14

Abiotic factors: sunlight, water, soil, air, weather, fire, drought
Biotic factors: competition, predation, reliance on other organisms for survival (ie mutualism), disease