- what feature in chordates is the extension of the notochord and nerve cord beyond the opening of the anus?
- how many important characteristics shared by all chordates define this phylum?
- the word "arthropoda" refers to what about arthropod morphology?
- which phylum in the animal kingdom is the most diverse and accounts for at least half of all known animal species?
- a unique feature in gastropod development is the [answer] of the gut so that the anus opens in the front half of their body.
- what kind of life cycle do insects that undergo a complete metamorphosis have?
- Of all the different groups of arthropods, which is the most species-diverse?
- What is the highest order of cellular organization in arthropods?
- What is the term for the upper surface of most echinoderms?
- Tube feet are extensions of what system in echinoderms?
- What term is used to describe a network of water-filled canals in echinoderms used for critical functions such as gas and nutrient exchange as well as feeding and locomotion?
- what method of reproduction is the primary means of reproduction in echinoderms?
- what is the highest level of cell organization in mollusks?
- the rigid outer covering of an arthropod is mainly composed of what material?
- Which specialized cell is responsible for producing a current that draws water through the ostia (pores) of the sponge?
- in a mammals lungs, ______ branch from the trachea and end in many ______, which form the gas exchange surface.
- Which major morphological part of a mollusk covers the visceral mass and produces the shell (if present)?
- which organism is an example of the class chondrichthyes?
- Cephalopods exhibit intelligence, have sophisticated eyesight, and have many neurologically controlled tentacles. Some even have neurologically controlled color changes. This is indicative of what kind of nervous system?
- one unique feature of bivalves is that their bodies are flat and configured laterally. why is this?