Question

another example of a parasitic relationship would be......
a bird eating insects off the back of a cow in a field.
a leech attaching itself to your leg and feeding off of your blood.
a barnacle attaching itself to a whale to move from place to place (without harming the whale)
rewatch submit

Explanation:

• In a parasitic relationship, one organism (the parasite) benefits at the expense of another (the host).
• For the bird - cow example: The bird benefits (gets food) and the cow also benefits (gets rid of insects). This is a mutualistic relationship.
• For the leech - human example: The leech (parasite) benefits by getting blood (food), and the human (host) is harmed (loses blood, may have health issues like infection risk).
• For the barnacle - whale example: The barnacle benefits (gets to move around, access food in different areas) and the whale is not harmed. This is a commensalistic relationship.

Answer:

B. A leech attaching itself to your leg and feeding off of your blood.