symbiosis

Question 1

What is symbiosis?

Answer 1

Co-evolved intimate relationships between members of two different species.

Question 2

What are the types of symbiotic relationships?

Answer 2

Parasitism and mutualism.

Question 3

What characterizes a parasitic relationship?

Answer 3

A parasite benefits in terms of energy or nutrients, whereas its host is harmed by the loss of these resources.

Question 4

What is a characteristic of parasites?

Answer 4

Parasites often have limited metabolism and cannot survive out of contact with a host.

Question 5

What do some parasitic life cycles involve?

Answer 5

Intermediate (secondary) hosts to allow them to complete their life cycle.

Question 6

What is mutualism?

Answer 6

Both mutualistic partner species benefit in an interdependent relationship.

Question 7

How are parasites transmitted to new hosts? (3)

Answer 7

-Direct contact (fleas, lice)
-Resistant stages (specific life
Cycles that allow them to survive adverse conditions eg larvae, eggs)
-Vectors (e.g., mosquitos transferring protozoa)