- The _______ form of cnidarians is typically sessile.
- worms have an identifiable head region. What term describes this?
- What type of cell is characteristic of the phylum Cnidaria?
- Cnidarians are simple in structure but are composed of true ____ , though no ______ are present.
- Which stage of embryonic development is unique to the Kingdom Animalia?
- A unique feature in gastropod development is the _____ of the gut so that the anus opens in the front half of their body.
- which subphyla has at least one pair of legs per section, running the entire length of their body?
- Which type of body symmetry results in no equal parts along any axis?
- Consider the list of characteristics below. What item is NOT a characteristic of animals?
- what creature is an example of the subphylum cephalochordata?
- During the blastula stage of embryonic development, what is the inner cell mass?
- A gecko, which has a spinal column and can climb walls, can be classified as what type of animal?
- During what stage of a sponge's lifecycle is it able to move?
- In the mesohyl of a sponge, what is the specialized function of a lophocyte?
- what is the defining characteristic of monotreme mammals?
- the characteristic feature of biramous limbs in crustaceans is what?
- A butterfly, which has a centralized brain but not a spinal column, is classified as what type of animal?
- what type of organisms are found in Class Asteroidea?
- in vertebrates, what does the notochord develop into?
- what creature is an example of the class agnatha?