Question
appropriate. scribe the character "ustrations where 1. Briefly describe how inction of a Protonom tozoa move explain the function 3. Describe polymorphism in Phili diagram cell types found in sponges describe the Four (4)class Cnidaria 6 Phylum Platyhelminthes CAT 1,10/10/2024 SACADEMIC
Solution
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Wilbur
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Answer
Let's break down these Zoology topics:1. **Character Description & Function:** This likely refers to describing anatomical features of an organism and explaining their role. For example, describing the streamlined body shape of a fish and explaining how it reduces drag in water, allowing for efficient movement.2. **Polymorphism in Cnidaria & Cell Types in Sponges:** * **Polymorphism in Cnidaria:** Cnidarians (like jellyfish, corals, and hydras) often exhibit polymorphism, meaning they have multiple body forms within their life cycle. The most common forms are the polyp (sessile, attached form) and the medusa (free-swimming form). This allows them to exploit different ecological niches. * **Cell Types in Sponges (Porifera):** Sponges have specialized cells that perform various functions. Key cell types include choanocytes (collar cells for feeding), amoebocytes (for nutrient transport and skeletal element production), and pinacocytes (form the outer layer).3. **Four Classes of Cnidaria:** Traditionally, Cnidaria is divided into four main classes: * **Hydrozoa:** Includes hydras, some corals, and Portuguese Man-of-War. Often exhibit both polyp and medusa stages. * **Scyphozoa:** True jellyfish. The medusa stage is dominant. * **Cubozoa:** Box jellyfish. Known for their potent venom. * **Anthozoa:** Corals and sea anemones. Exist only as polyps.4. **Water Canal Systems in Porifera:** Sponges have unique water canal systems that facilitate filter feeding and gas exchange. There are three main types: * **Asconoid:** Simplest type, with a central cavity (spongocoel) lined with choanocytes. * **Syconoid:** More complex, with folded walls that increase surface area for feeding. * **Leuconoid:** Most complex, with numerous chambers lined with choanocytes, maximizing filtering capacity.5. **Phylum Platyhelminthes:** This phylum consists of flatworms, including free-living forms like planarians and parasitic forms like flukes and tapeworms. Key characteristics include bilateral symmetry, a simple nervous system, and a lack of a coelom (body cavity).This outlines the key concepts for each topic. Remember to consult your textbook and course materials for more detailed information and specific examples. Good luck with your studies!