DC Fungi and Animals Exam Review

Front

What is cephalization?

Back

Cephalization is the concentration of the sense organs, nervous control, etc. at the anterior end of the body.

Front

Do pseudocoelomate nematodes lack a body cavity?

Back

Incorrect, while their pseudocoel does not allow for the development and expansion of organs, it is still a body cavity.

Front

What is convergent evolution?

Back

Convergent evolution is the independent evolution of similar traits in different lineages, such as the development of insulating skin coverings like fur, hair, and feathers in mammals and birds.

Front

What is a parasitic relationship in fungi?

Back

A parasitic relationship in fungi is one where the fungus derives nutrients at the expense of the host, such as athlete's foot on human feet.

Front

What molecule indicates fungal contamination in drug preparation?

Back

Chitin is an indicator of fungal contamination.

Front

What is the role of mycorrhizal fungi?

Back

Mycorrhizal fungi form symbiotic relationships with plants, enhancing nutrient absorption.

Front

Define endothermy.

Back

Endothermy is the ability of an organism to maintain a constant body temperature through internal metabolic processes.

Front

What is the significance of chitin in fungi?

Back

Chitin is a structural polysaccharide that forms the cell walls of fungi.

Front

What is the difference between homology and analogy?

Back

Homology refers to traits inherited from a common ancestor, while analogy refers to traits that arise independently due to similar environmental pressures.

Front

What is the function of the pseudocoel in nematodes?

Back

The pseudocoel acts as a hydrostatic skeleton, providing support and allowing for movement.