Zoology_Lab_Study_Guide_Midterm_Exam

What is the mnemonic for taxonomic classification from Domain to Species?

Darn = Domain, King = Kingdom, Philip = Phylum, Came = Class, Over = Order, For = Family, Good = Genus, Sex = Species.

What are the two types of cleavage in development?

Radial and spiral cleavage.

What is the function of the osculum in sponges?

It is the opening where water exits the sponge.

What are the three classes of sponges and their key differences?

Demospongiae: siliceous/spongin fibers and non 6 rayed; Calcispongiae: calcium carbonate; Hexactinellida: 6 rayed spicules.

What type of symmetry do organisms in Phylum Cnidaria exhibit?

Radial symmetry.

What is a key feature of Planarians in Phylum Platyhelminthes?

They have bilateral symmetry and a flat, elongated body.

What type of circulatory system do earthworms have?

Closed circulatory system.

What distinguishes Class Bivalva in Phylum Mollusca?

They have an umbo on the outer side and gills with big internal wings.

What type of respiratory system do most crustaceans possess?

Gill breathing.

How can one tell the difference between male and female decapod crustaceans?

By the first set of swimmerets on the abdomen.

What is a characteristic feature found in Class Insecta in Subphylum Hexapoda?

They typically have compound eyes and 6 uniramous walking legs.

What does acoelomate mean?

An organism that lacks a coelom (body cavity).

What type of excretory structure do Planarians use?

Flame cells.

What are the two reproductive methods in Cnidaria?

Sexual reproduction via medusa creating a polyp and asexual reproduction via budding.

What is the primary function of the foot in Class Gastropoda?

It is used for locomotion and looks like a ravioli.

What is a defining feature of the Class Arachnida?

They have a cephalothorax and abdomen.