Phylum Annelida Class Clitellata Maria Erika Victoria V. Soriano Zoology Summer 2013 PHYLUM ANNELIDA ¡ The segmented worms ¡ Bilaterally symmetrical ¡ Possesses at least one pair of chitinous bristles called setae or chaetae ¡ Exhbits metamerism ¡ Epidermis secretes a protective cuticle that remains permeable to both water and gases; thus‚ annelids are restricted to moist environment ¡ Septa separates the annelid segments from each other ¡ All are very similar in appearance and strucuture
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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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Article Summary Effects of earthworms on soil Earthworm is the common name for the largest members of Oligochaeta in the phylum Annelida. They combine bilateral symmetry and corresponding external and internal segmentation. This phylum consists of more than 17‚000 modern species of worms including earthworms‚ ragworms‚ and leeches. They are found in marine environments from tidal zones to hydrothermal vents‚ in fresh water‚ and in most terrestrial environments. They generally do not occur
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Purpose: To save Fred’s life ! Background information: We have to save Fred from drowning. If we drop him in the water Fred will die. Fred has only 2 lives. We can’t stab Fred with the paperclips because if we do he will also die. We have to try to get the lifesaver which is under the cup in order to save Fred’s life & keep him from drowning. Once we put the lifesaver on Fred he will be safe but we have to be careful when we’re picking up the lifesaver and Fred with paperclips. Hypothesis:
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Introduction The annelids (also called "ringed worms")‚ formally called Annelida (from Latin anellus "little ring")‚ are a large phylum of segmented worms‚ with over 2‚000 modern species including ragworms‚ earthworms and leeches. Annelids are abundance in freshwater‚ brackish and marine sediments. They are bilaterally symmetrical‚ triploblastic‚ coelomate organisms. These invertebrates can be recognized by their segmented bodies. Segments each contain elements of such body systems as circulatory
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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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century. (Bu Ali Sina‚ Ali Bin Isa‚ Ibn-Al Nafees) 2. Each fore limb of frog has _________ fingers. (4‚ 5‚ 6) 3. Fruit is formed by the enlargement of _________. (Stigma‚ Style‚ Ovary) 4. The earthworm belongs to the phylum _________. (Nematoda‚ Annelida‚ Mollusca) 5. The saliva contains an enzyme known as _________‚ which acts on carbohydrates. (Lipase‚ Trypsin‚ Ptyalin) 6. _________ tissues specialize in contraction. (Connective‚ Muscle‚ Nervous) 7. Goitre is caused
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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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Compare and contrast Oligochaetes and Caecilians Oligochaetas are earthworms which belongs to phylum Annelida while Caecilians are amphibians that look like earthworm or snakes belonging to phylum Chordata order Apoda and both have similar appearances. Both classes belongs to Eumetazoa having similar characteristics like organ system level of organization‚ increased cephalisation ‚ bilaterally symmetry‚ triploblastic tissue development and coelomate development. The difference is that Oligochaeta
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Observing the Live Earthworm Kingdom Animalia is a diverse kingdom that contains many types of worms. The phylum Annelida includes segmented worms such as Earthworms‚ Clamworms‚ and Leeches. Earthworms play a huge role in the environment. They have two openings‚ a mouth and an anus. They feed through the mouthpharynxesophagus crop (stores food)gizzard (grinds food)intestineanus (excretion of waste). The hypothesis predicted for this lab is that Earthworms will respond differently when came in contact
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