Higher Biology - Unit 3 - Part 5 - Symbiosis

Question 1

A co-evolved intimate relationships between members of two different species is called ……

Answer 1

symbiosis

Question 2

A parasite benefits in terms of energy or nutrients, whereas its host is …

Answer 2

harmed by the loss of these resources

Question 3

Parasites can be transmitted to new hosts using ….

Answer 3

• direct contact
• resistant stages
• vectors

Question 4

The tape worm parasite has a primary host of a human and part of its lifecycle also takes place in pigs. We call the pigs the _____________

Answer 4

secondary host

Question 5

mutualistic partner species _________ in an

interdependent relationship

Answer 5

benefit

Question 6

In coral reefs xooxanthellae algae live in a close ___________ relationship with coral polyps. Each benefit.

Answer 6

mutualistic

Question 7

The bacteria in a cow’s stomach can break down the cellulose in the grass so the cow can then digest it.
This relationship is an example of _______________

Answer 7

mutualism