Symbiotic Relationships

Question 1

endosymbiosis

Answer 1

one species inside the other

Question 2

ectosymbiosis

Answer 2

one species found around the outside of the other species

Question 3

obligate symbiosis

Answer 3

two species that depend on each other (would die without each other)

Question 4

facultative symbiosis

Answer 4

can be associated but do not depend on each other exclusively for survival

Question 5

plant-animal symbiosis

Answer 5

coral and algae

solar powered sea slug

Question 6

microbe-animal symbiosis

Answer 6

methane-oxidising bacteria and vent snails

Question 7

bacterium which cause bio-luminescence

Answer 7

vibrio/photobacterium

Question 8

what is counterillumination?

Answer 8

a form of camoflage

- lightens shadow against light above

Question 9

how is bioillumination switched on and off?

Answer 9

animals control life coming out of bodies

bacteria often found in pores

Question 10

what are selective light blocking pores in bioluminescent animals?

Answer 10

chromatophores

Question 11

animal-animal ectosymbiosis

Answer 11

boxer crabs & anemones

- hold anemones in claws to fight off predators

Question 12

burrow dwelling symbiosis

Answer 12

one makes burrow, other also uses burrow

Question 13

burrow dwelling symbiosis example

Answer 13

gobies (guards) and arrow shrimp (can’t see well, create burrow)

Question 14

common characteristics of cleaning fish

Answer 14

cleaning fish tend to have yellow and blue colour and horizontal stripes

Question 15

cleaning station study

Answer 15

low parasite load -> taking scales & skin from fish -> parasitic relationship