An animal that carries its young in a pouch

Match the following organisms and phyla to their respective type of symmetry. 

Lichen consist of a stable, mutualistic association between  ___________ and _________.  How does each partner benefit from this association?

List and describe at least 2 adaptations of the nervous system that allow more complex animals (vertebrates) to respond to a wider variety of stimuli than simpler animals (such as cnidarians). 

List three different types of sensory receptors. Which type is the most important for the process of hearing? 

True or False: Imprinting is a form of learning ________. Explain your answer. 

What unique, important role do fungi play in ecosystems? Explain your answer. 

List one trait that Cnidarians and Bilaterians share that is absent in Porifera (sponges). 

Define learning. What is the adaptive advantage of learning a particular behavior vs. the behavior being innate? 

How do fungi find partners to mate with during sexual reproduction?