CHAPTER NO-5 KINGDOM ANIMALIA Phylum Porifera (GK: Porous = Pores + Ferro = form) Main characters: 1. They are commonly called as sponges. 2. They are sessile animals. 3. Sponges range in height from about 1cm to 2cm. 4. More than 5000 species of sponges are found. 5. All are marine‚ while some are fresh water. 6. The central body cavity is called spongocoel. 7. A single large opening is called as osculum. 8. They are filter feeders. 9. Body lining is formed by flagellated cells
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* Are made of animal cells * No cell walls * Eukaryotic. Lysosomes‚ centrioles. Flagella‚ cilia * Multicellular * Heterotrophic * Chemotrophic * They are either: 1. Invertebrates * Have no back bone 2. Vertebrates Things to classify Animals: 1. Feeding 2. Respiration 3. Internal Transport 4. Excretion 5. Response 6. Movement 7. Reproduction Phylum Porifera * The flagella move water into the sponge * Cells collect
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Arthropod (crayfish) Dissection Megan Williamson period: 3 4/29/13 Objectives: The purpose of this lab was to study and observe the organs in a crayfish and be able to name them. Introduction: Crayfish belong to the kingdom animilia‚ phylum arthropod and class crustaceans. The body is divided into three parts‚ the body‚ the head‚ thorax‚ and abdomen. The head and thorax are apart of a segment called cephalothoraxes‚ which is covered by the carapace made of chitin
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of the two large subdivisions within the Protostomia _ Builds a cuticle‚ an outer layer of organic material that functions as its skeleton _ Cuticle is regularly shed (ecdysis) _ Have separate sexes and copulate Ecdysozoa Cuticle – nematode and arthropod Phylum Nematoda (15‚000 species) (Gr. nematos‚ thread) _ marine‚ freshwater‚ terrestial or parasitic _ long cylindrical body _ cuticle (cortical‚ matrix and fibrous) _ hydrostatic skeleton _ longitudinal muscles only _ pseudocoelom (false body cavity)
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The circulator system of spiders * Spiders are arthropods and they have an open circulatory system. * The open circulatory system is a system in which the organs are directly bathed with nutrients and oxygen. The blood flow is not restricted as much as a closed circulatory system. * The spider’s heart is a simple heart‚ a tube surrounded by muscle with a one-way valve at each end. * It is located in the abdomen a short distance within the middle line of the dorsal body-wall‚ and
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that of annelids (though unsegment) in that it consists of a non-ciliated epidermis overlain by a cuticle‚ an outer layer of circular and an inner layer of longitudinal musculature. Subphylum Crustacean (the Crustaceans) comprises a large group of arthropods. The group contains familiar popular marine food animals such as lobsters‚ crabs‚ and shrimp. While mainly found in salt and freshwater environments‚ there are also terrestrial Crustacean such as woodlice and isopods. Crustaceans have three distinct
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The Horseshoe Crab‚ scientifically named Limulus Polyphemus‚ is an ancient creature that not many people know much about. The Horseshoe Crab is part of the Limulidae family‚ which is the marine arthropods. The Horseshoe Crab’s closest relatives are Trilobites back from the Paleozoic which is coincidently when the Horseshoe crab first began to develop. (Reference 2) In modern times the Horseshoe crab is not labelled as a crustacean despite its name. The Horseshoe Crab is closely related chelicerates
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Chapter 1: Classification and Characteristics of Living Organisms Organisms - An individual living thing‚ such as an animal or a plant‚ is called an organism. There are seven characteristics of living organisms – Nutrition Nutrition is the process by which organisms obtain energy and raw materials from nutrients such as proteins‚ carbohydrates and fats for growth and repair. Photosynthesis is the process of nourishment of green plants. Digestion is the process of nourishment of green
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Pill bugs only grow from 0.2 inches up to 0.6 inches. They are part of the class Crustacea and are related to lobsters‚ crabs‚ shrimp‚ and daphnia (water fleas). Crustaceans are also part of a larger group‚ Arthropoda (jointed-legged animals). All arthropods have a trunk divided into segments‚ a tough outer cuticle‚ and limbs that are flexible joints. Some behavior traits include rolling into a ball when threatened‚ nocturnal abilities‚ and being able to travel considerable distances at night. They
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Those two creatures that are the same but different in their own way “is a classic example of what looks like intelligences pitted against instinct” (Petrunkevitch 59). The tarantula and the digger (pepsis) are both from the branch called arthropods. Even though the spider is an arachnid and the wasp is an insect they do have some similarities. For example for they are both solitude creatures‚ only when they have to mate they gather among others of their own kind in order for the males
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