Sponges are aquatic animals that spend their entire lives affixed to a single point on the ocean or sea floor. At one point in history, they were considered plants because of their shape and sedentary lives. However, further research revealed that they are one of the simplest forms of animal...
Why do sponges belong to the phylum Porifera? Why is the phylum Arthropoda the most diverse? Is kelp a protist? Why or why not? Why are frogs in the phylum Chordata? Why are leeches classified in the phylum Annelida? Is Pisaster ochraceus a keystone species?
One reason for the success of invertebrates ishow quickly they reproduce. Sponges and corals, for example, produce both eggs and sperm. Social insects such as ants and bees lay eggs that can develop without fertilization—they become the workers. Insects in particular are successful because they ...
Why are members of the phylum Bryozoa called moss animals? Why is bilateral symmetry favored in members of the phylum Platyhelminthes? Why do sponges belong to the phylum Porifera? How are Acoela different from the phylum Platyhelminthes?
Why do sponges belong to the phylum Porifera? Why are protozoans, helminths, and fungi harmful to humans? Why have more fowleri amoebas been occuring? Why are amphibians unsuccessful vertebrates? Why is a dog in the phylum Chordata?
Why do sponges belong to the phylum Porifera? Is kelp a protist? Why or why not? Why are crinoids in the phylum Echinodermata? Why are euglena and amoebas not classified as prokaryotes? What defines plankton, nekton, and benthos?
What are sessile invertebrates that lack a nervous system called? The simplest animal phylum consists of which animals and is called what? (a) Anemones, Anthozoa. (b) Sponges, Anthozoa. (c) Sponges, Porifera. Fill in the blanks. Phylum Mollusca i...
What differentiates sponges from other animal phyla? Why are monotremes considered as unique mammals? If the only chordate characteristic that adult sea squirts possess are gills, why are they classified as a chordate? How do members of phylum porifera obtain food? a. Why would Phylum Annelida...
How do members of phylum porifera obtain food? What are the characteristics of the Phylum Chordata? What is the significance of Tunicates in the evolution of Vertebrates? Sponges and cnidarians have no gills. How do they exchange gases with the environment? Female Ascaris are more numerous than...
Question 6: Sponges: a) are in the phylum Porifera. b) have cnidocytes. c) are dioecious. d) have bilateral symmetry. e) all of the above All of the following are characteristics of earthworms EXCEPT: a. hermaphrodism. b. flat bodies. c. a coelom. d. bi...