Types of interactions L5

Question 1

What is symbiosis?

Answer 1

Relationship between two or more different species

Question 2

What is predator-prey relations?

Answer 2

One species preys on another

Question 3

What is consumer-producer relations?

Answer 3

One species produces a resource for another

Question 4

What is competition?

Answer 4

Individuals must compete for resources

Question 5

What is parasitism?

Answer 5

• One organism benefits, another is harmed (+,-)
• Parasites require hosts (usually specific)

Question 6

What is commensalism?

Answer 6

• One species benefits, other is unaffected (+, 0)

Question 7

What is mutualism? What are the two types of mutualism?

Answer 7

• Both species benefit (+,+)
• Obligatory mutualism
• Facultative mutualism

Question 8

Obligatory mutualism

Answer 8

Each depends on the other exclusively

Question 9

Facultative mutualism

Answer 9

Neither is wholly dependent upon the other

Question 10

What is predations?

Answer 10

Both predators and prey have specialized
adaptations to assist with survival

Question 11

What are two ways prey can hide from predators?

Answer 11

1. Camouflage – blend in
2. Mimicry – look like something worth avoiding!

Question 12

Why are producers so important in producer-consumer relationships?

Answer 12

Producers must be present in order to sustain the needs of consumers - no producers = no consumers = no community

Question 13

What are two types of competition?

Answer 13

• Interspecific
• Intraspecific

Question 14

Interspecific

Answer 14

Different populations are competing for resources

Question 15

Intraspecific

Answer 15

Individuals within the same population are competing for resources

Question 16

What is succession?

Answer 16

Slow, orderly progressive replacement of the
community by another during an areas
development

Question 17

What is a pioneer species?

Answer 17

First organisms to take root and build soil layer (e.g. lichen, moss, ferns, insects)

Question 18

What is a climax community?

Answer 18

Stable end populations that developed

Question 19

What is primary succession?

Answer 19

Community arising from no previous living
populations (i.e. barren land)

Question 20

What is secondary succession?

Answer 20

Community begins to re-establish after partial destruction (e.g. forest fire, road paving, cultivation, cattle grazing)