Symbiosis 3.5

Question 1

What is Symbiosis

Answer 1

Relationship between two different species in direct contact with one another

Question 2

What is Parasitism

Answer 2

The parasite benefits at the expense of the host who is often damaged

Question 3

What is Mutualism

Answer 3

Both organisms benefit from the relationship

Question 4

How can parasites be transmitted

Answer 4

Direct contact, release of resistant stages, use of a vector

Question 5

What is Direct contact

Answer 5

e.g lice are passed from person to person through physical contact

Question 6

What is release of resistant stages

Answer 6

A stage in the life cycle that can withstand adverse environmental conditions until they come into contact with a new host

Question 7

What is use of a vector

Answer 7

Using another animal to carry the parasite to its host e.g mosquitoes carry plasmodium (unicellular organism that causes malaria)

Question 8

Parasite life cycles

Answer 8

Can include more than one host. This intermediate/secondary host allows the parasite to complete their lifecycle