U3 KA5 Flashcards

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1
Q

What is Symbiosis?

A
  • the co-evolved intimate relationship between members of different species.
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2
Q

What is mutualism?

A
  • a symbiotic relationship where both members benefit.
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3
Q

How is the example, ‘Oxpeckers eating parasites living on a zebra’s skin’, Mutualistic?

A
  • oxpeckers gain nutrients from eating the parasites.
  • Zebras get the parasites removed from their skin.
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4
Q

What is Parasitism?

A
  • a symbiotic relationship where one member benefits and the other is harmed.
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5
Q

What is a parasite?

A
  • an organism that benefits from a host, by gaining its energy and nutrients, harming the host.
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6
Q

Why must parasites maintain contact with the host?

A
  • they have a limited metabolism and cannot survive out of contact with the host.
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7
Q

How are parasites transmitted? (3)

A
  • direct contact (eg. fleas and lice).
  • resistant stages (eg. larvae).
  • Vectors (eg. mosquitoes).
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8
Q

What is the role of a secondary host to a parasite?

A
  • some parasites require one to complete their life cycle.
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