BIOLOGY (ZOOLOGY) Standard XI Untouchability is a sin Untouchability is a crime Untouchability is inhuman TAMIL NADU TEXTBOOK CORPORATION College Road‚ Chennai - 600 006. © Government of Tamilnadu First Edition - 2005 Chairperson Prof. T. SARGUNAM STEPHEN Dept. of Zoology Govt Arts College Nandanam‚ Chennai - 600 035. Reviewers Dr. D. Mony Reader in Zoology R. M. Vivekananda College Mylapore Chennai - 600 004. Dr. D. Sudarsanam Reader and H O D Dept. of Zoology Loyola College
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damage in their body‚ since other segment duplicate the damage segment functions Locomotion is more efficient‚ since partitions isolate the segment can contract and expand autonomously. 32.3. The Classification of Animals Animals divided into 35-40 phylum 32.3.1 Tissue symmetry separate the Parazoa and Eumetazoa Kingdom Animalia (Metazoa) is divided into 2: Parazoa Animals that lack tissue and symmetry Ex. Porifera (Sponges) Eumetazoa (true animal) Animals that have definite shape and symmetry
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Information http://insected.arizona.edu/isoinfo.htm * Definition: any of various small terrestrial or aquatic crustaceans with seven pairs of legs adapted for crawling. * Iso- Greek for “similar to”‚ Pod- Greek for “foot”. * Organization: Phylum‚ Arthropoda; Class‚ Malacostraca; Order‚ Isopoda * Appearance: 3 main body parts: head‚ thorax‚ and abdomen One prominent pair of antennae Eyes Seven pairs of legs (14) Paired appendages at end of abdomen called uropods Color varies grey to white
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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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Insects Insects are neumerout invertebrate animals that belong in the Phylum Arthropoda and Class Insecta. The class Insecta is divided into 2 subclasses: Apterygota‚ or wingless insects‚ and Pterygota‚ or winged insects. Subclass Pterygota is futher divided on basis of metamorphosis. Insects that have undergone incomplete metamorphosis are the Exopterygota. Insects that undergo complete metamorphosis are the Endopterygota. Insects have an outer bilateral exoskeleton to which the muscles are
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Species were collected using a 500µm D-frame net and were preserved using 95% ethanol‚ photographed and was identified up to species level. A total of 43 identified species were collected from both wet and dry seasons. Identified species comprised of Arthropoda (77%)‚ Mollusca (18%) and Annelida (5%). G. remigis was the most abundant in terms of number of individuals collected for the two seasons. Taxa 2 was the most abundant in terms of number of species and number of individuals for both wet and dry
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perfect casts. (Glaessner 67)<br><br>The nature of these soft-bodied fossils justifies the characterization of the Precambrian as the "age of the jellyfish‚" however the term jellyfish only refers to a number of diverse forms‚ which belong to the Phylum Cnideria.
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blood in 13th 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)
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derived from osmosis‚ however is much more complex. Osmosis is the diffusion of water down its cavity gradient through a semipermeable membrane. The aim of the experiment was to determine whether P. lurca (Phylum Sipuncula) was an osmoconformer and U. coarctata‚ a fiddler crab (Phylum Arthropoda‚ Subphylum Crustacea) was an osmoregulator (School of Marine and Tropical Biology‚ 2010). It was hypothesised that P. lurca is an osmoconformer with a soft-body while U. coarctata is an osmoregulator and
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Classification The crayfish falls within the kingdom - anamalia‚ phylum - Arthropoda‚ Class - Crustacea‚ Order -Decapoda ‚ and family - Cambaridae. Habitat Crayfish like to be where it’s dark and cool‚ and during much of the daylight they will be found by them selves‚ under a rock or vegetation‚ waiting for dark‚ when they come out to forage for food. This is highly variable‚ ranging from deep holes to sluggish streams. A suitable habitat is medium-sized streams containing riffles and rocky pools
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