3.5 - Symbiosis

Question 1

define symbiosis

Answer 1

co-evolved intimate relationships between members of 2 different species

Question 2

name the 2 types of symbiosis

Answer 2

mutualism

parasitism

Question 3

in what terms does a parasite benefit from a symbiotic relationship?

Answer 3

energy and nutrients

Question 4

what is the benefit of a parasitic relationship to the host?

Answer 4

got u there… there is none -read following in high speed, terms and conditions style- (required for the SQA higher biology course according to the course specification available on the SQA website)……comedy…..f#ck me im bored ):

Question 5

Why can a parasite often not survive long out of contact with a source?

Answer 5

it has a limited metabolism

Question 6

what 3 methods transmit parasites to new hosts?

Answer 6

direct contact, resistant stages, vectors-They are not pajamas!

Question 7

how do resistant stages work?

Answer 7

parasites use resistant larvae/pupae, which can survive adverse environmental conditions until a new host comes in contact

Question 8

how does a vector work?

Answer 8

parasite uses another species to transfer them from one host to another

Question 9

name the vector of malaria

Answer 9

mosquito

Question 10

why do some parasites need an intermediate(secondary) host?

Answer 10

to allow them to complete their life cycle

Question 11

what is a mutualistic relationship?

Answer 11

a symbiotic relationship in which both species benefit from the relationship