Cnidarians Cnidaria is a phylum containing some 11‚000 species of simple animals found exclusively in aquatic‚ mostly marine‚ environments. Cnidarians get their name from cnidocytes‚ which are special cells that carry stinging organelles. The corals‚ which are important reefbuilders‚ belong here‚ as do the sea anemones‚ jellyfish‚ sea pens‚ sea pansies and sea wasps. The names Coelenterata and Coelentera were once applied to the group‚ but those names included the Ctenophores‚comb jellies
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PRACTICE TEST Answer the following questions on a separate sheet of paper. 1. Which of the following levels would contain members that are the most similar to one another (the least amount of variation among members)? a. class b. kingdom c. phylum d. family 2. Evolution is a very controversial idea among both scientists and nonscientists. a. true b. false 3. In what family are humans classified? a. hominidae b. chordata c. primates d. Homo 4. What is the role of fossils in supporting
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UNIT I Diversity in the Living World CHAPTER 1 The Living World What is Living Diversity in the living world Taxonomic Categories Taxonomical Aids The living world is very wonderful. It contains wide range of life forms. 1.1 What is living – Living organisms are self-replicating‚ evolving and self-regulating interactive systems capable of responding to external stimuli. Living organisms exhibit following distinctive characteristics. All Living Organisms
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has two parts‚ the genus name (i.e. the ‘generic’ name) and the species name (i.e. the ‘specific’ name)‚ for example‚ Homo sapiens‚ the name of the human species. In traditional Linnaean taxonomy‚ the seven major taxonomic groupings are Kingdom‚ Phylum‚ Class‚ Order‚ Family‚ Genus‚
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Linnaeus’s hierarchical system of classification includes seven levels. They are—from smallest to largest—species‚ genus‚ family‚ order‚ class‚ phylum‚ and kingdom Family- group of genera that share many characteristics Order- group of similar families Class- group of similar orders Several different classes make up a phylum The kingdom is the largest and most inclusive of Linnaeus’s taxonomic categories. Linnaeus named two kingdoms‚ Animalia and Plantae Carolus
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your new answer with a cross . Classification 1 (a) Camels belong to the phylum Chordata. The drawing shows a dromedary camel that has the binomial name Camelus dromedaries. (i) Complete the sentence by putting a cross ( ) in the box next to your answer. The second part of the binomial name‚ dromedaries‚ refers to the (1) A class B genus C order D species (ii) State one feature that all members of the phylum Chordata have in common. (1) . . . . . . . . . . . . ...................
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segments‚ which bear the walking limbs. 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
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live in water and have gills‚ scales and fins on their body. 2. Amphibians are born in the water. When they are born‚ they breath with gills like a fish but eventually they will grow up and develop lungs and can live on land. 3. Arthropods is a huge phylum of animals. It includes 11 classes: Merostomata‚ Pycnogonida‚ Arachnida‚ Remipedia‚ Cephalocarida‚ Branchiopoda‚ Maxillopoda‚ Malacostraca‚ Chilopoda‚ Diplopoda‚ and Insecta.
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1 Title: The Marine Biome #2 Biome Description and Definition The Marine Biome is made of all the oceans in the world. It holds many diverse species in animals and plants and since it is so enormous‚ there is some species that have not been discovered yet. The ocean is a mysterious thing because it is different in each part of the world‚ the climate depends on the location and the location depends on what species are located in that part. Australia is home to the coral reef‚ where today it is
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an experiment to determine the osmoregulatory ability of two organisms. You will also examine the organs responsible for osmoregulation and excretion of both invertebrates and vertebrates. 1. Osmoregulation Experiment Phascolosoma lurca (Phylum Sipuncula) and Uca coarctata‚ fiddler crab (Subphylum Crustacea) occur throughout the year in the mudflats of Suva Points‚ Nasese‚ and generally around all river mouths and in the mudflats throughout Fiji. In these environments the water salinity
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