bilateral‚ Coelomic and segmented organisms). Phylum: Porifera-The sponges------------------------Parazoans Phylum: Cnidaria-jellyfish‚ anemones‚ coral------Eumetazoans with radial symmetry. Phylum: Platyhelminthes-The flat worms----------Bilateral symmetry with acoelomic cavity. Phylum: Nematoda-The round worms--------------Pseudocoelomic cavity. Phylum: Mollusca-Gastropods/Bivalves/Cephalopods------Coelomic cavity‚ first heart/respiratory system. Phylum: Annelida-Earth worms/marine worms/leeches----Coelomic
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The name Cnidaria comes from the Greek word “cnidos‚” meaning stinging nettle. There are about 9‚000 species of cnidaria‚ the most common being the jellyfish‚ sea anemone‚ and coral. Cnidaria come in two different body forms: free-floating or free-swimming form such as the jellyfish‚ and the stationary form such as the sea anemone. Both forms consist
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a Bio 20 Final Review SA Phylum | Example | Characteristics | /36 | | | Porifera | Glass Sponge | No true tissue‚ use collar cells No movement as adult | Cnidaria | Jellyfish | Polyp or Medusa Nerve net | Platyhelminthes | Fluke | Nerve cells that act as a brain Live in bodies | Nematoda | Hookworm | Taper at both ends False coelom‚ parasitic | Annelida | Earthworm or Leech | Segmentation Hydro skeleton | Mollusca | Octopus or Clam | Mantle‚
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delineation Locations within rocky shore sites support greater numbers of one species than others Vertical distribution Rock pool 3. Species List Organisms must be able to tolerate the physical stresses unique to this environment Animal Phylum Example Mollusca Periwinkle‚ mussel‚ smooth limpet‚ Striped limpet‚ Scaly limpet‚ Ribbed top shell‚ Chiton‚ Dog
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Opisthokonta: Metazoa II: Eumetazoa: Bilateria: Protostomia: Ecdysozoa Objectives: • Know the key features of the Phylum Nematoda. Know how they relate to other metazoan phyla. • List the key characteristics of the Phylum Arthropoda. Identify examples. List the four subphyla and their key distinguishing features. Identify examples of the subphyla Chelicerata‚ Crustacea‚ Myriapoda‚ and Hexapoda. • Be able to identify the different structures on these organisms and understand their function. • Understand
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Animal Diversity The number of animal varieties familiar to us is vast as the animal world is diverse. Each distinct variety or type of animals is recognized by scientist as a species. Animals of most species are free-living forms but of others are parasitic in bodies of other animals or even plants. According to their habitats animals are divided into the following types Aquatic animals :- They live in water . Animals living in sea water are called marine & those live in river‚ponds‚streams
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Wastewater Wastewater is any water that has been adversely affected in quality by anthropogenic influence. It comprises liquid waste discharged by domestic residences‚ commercial properties‚ industry‚ and/or agriculture and can encompass a wide range of potential contaminants and concentrations. In the most common usage‚ it refers to the municipal wastewater that contains a broad spectrum of contaminants resulting from the mixing of wastewaters from different sources. Sewage is correctly the
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Diversity in Living Organisms (Science) |Close X | |[pic] Classification And Evolution Classification refers to the identification‚ naming‚ and grouping of organisms into a formal system based on similarities in their internal and external structure or evolutionary history. It determines the methods of organizing diversity of life on earth. Therefore‚ classification helps in understanding millions of life forms in detail. Who started the classification of organisms? Let us explore the history of
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Natural selection _________. a. results in evolutionary adaptation b. is the result of sampling error c. does not affect allelic frequencies d. prepares organisms for future changes in the environment e. causes changes in the genes of the individual Biologically speaking‚ fitness increases when an organism _______________. a. survives many hardships b. lives for a long time c. passes on a greater proportion of its genes to the next generation d. is disease free e. gets stronger The evolutionary history
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Chrysaora fuscescens is the scientific name of the Pacific sea nettle. They belongs to phylum Cnidaria. They are native to the San Francisco Bay‚ and‚ as the name suggests‚ these jellyfish live in the Pacific Ocean. They thrive along the coasts of Oregon and California. They can also be found farther north in Japan and Alaska‚ although they are not as common in these northern waters. On occasions‚ they have been spotted as far south as the west coast of Mexico. During autumn and winter‚ Pacific sea
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