Review - Arthropods, Echinoderms, Fish

Front

What is the aboral surface in echinoderms?

Back

The aboral surface is the side of an echinoderm that is opposite to the mouth.

Front

What is the function of the lateral line in fish?

Back

The lateral line is a sensory organ that allows fish to detect vibrations and pressure changes in the water.

Front

What unique structure is found in Class Chondrichthyes but not in Class Osteichthyes?

Back

The Ampullae of Lorenzini, which are electroreceptors that help cartilaginous fish detect electric fields.

Front

Define an invertebrate organism.

Back

An invertebrate is an animal that lacks a backbone.

Front

What is the function of spiracles in certain organisms?

Back

Spiracles are openings that allow organisms to take in water when the mouth cannot.

Front

What are the main characteristics of arthropods?

Back

Arthropods have an exoskeleton, segmented bodies, and jointed appendages.

Front

What is the role of gills in fish?

Back

Gills are respiratory organs that allow fish to extract oxygen from water.

Front

What is the significance of the caudal fin in fish?

Back

The caudal fin, or tail fin, is crucial for propulsion and steering in water.

Front

How do echinoderms exhibit radial symmetry?

Back

Echinoderms typically have body parts arranged around a central axis, often in multiples of five.

Front

What is the difference between cartilaginous and bony fish?

Back

Cartilaginous fish have a skeleton made of cartilage, while bony fish have a skeleton made of bone.