From your textbook review questions. Which of the following organisms is most likely to be a diploblast? sea star shrimp jellyfish insect

From your textbook review questions. Echinoderms have _____. triangular symmetry radial symmetry hexagonal symmetry pentaradial symmetry

From your textbook review questions. As with the emergence of the Acoelomorpha phylum, it is common for ____ data to misplace animals in close relation to other species, whereas ____ data often reveals a different and more accurate evolutionary relationship. molecular : morphological molecular : fossil record fossil record : morphological morphological : molecular

Which term is used for a group of related organisms and their common ancestor?

What is represented by a node in a cladogram?

From your textbook review questions. What is the function of the raphe in diatoms? locomotion defense capturing food photosynthesis

From your textbook review questions. Which group of invertebrates is most closely related to vertebrates? cephalochordates echinoderms arthropods urochordates

From your textbook visual connections questions. The first organisms that oxygenated the atmosphere were cyanobacteria phototrophic organisms anaerobic organisms all of the above

From your textbook review questions. The large central opening in the parazoan body is called the: gemmule. spicule. ostia. osculum.

From your textbook review questions. Mesohyl contains: a polysaccharide gel and dead cells. a collagen-like gel and suspended cells for various functions. spicules composed of silica or calcium carbonate. multiple pores.