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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Vertebrates and Invertebrates. Vertebrates are animals with a vertebral column or backbone and Invertebrates are animals without a backbone. Invertebrates include organisms from the following phyla: Porifera‚ Cnidaria‚ Nematoda‚ Mollusca‚ Annelida‚ Arthropoda‚ Echinodermata‚ etc. Invertebrates can be further divided into two groups according to their level of complexity and specialization. These are: 1. Lower Invertebrates: This comprises of the phyla Protozoa‚ Porifera‚ Cnidaria‚
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Entomology: The Study of Insects and their Relatives Insects and their terrestrial relatives belong to the phylum called Arthropoda and have inhabited the earth for an extensive time. Paleontologists show that the earliest fossils‚ most primitive forms of arthropods date back to the Devonian Period over 350 million years ago (Henning 1981). By the Age of Dinosaurs‚ 300 million years ago‚ insects were abundant in number and diversity. Like the dinosaurs‚ some pre-historic forms of insects were
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Keith B. Kofoed Biology 1407 Horizontal Gene Transfer Responsible for Carotenoid Production in Aphids Horizontal Gene Transfer Horizontal gene transfer (referred to as HGT for the rest of the paper) is said to have occurred when an organism successfully incorporates genetic information from another organism into its own genetic makeup when the first organism is not the offspring of the other organism. HGT‚ or lateral gene transfer (LGT)‚ is used to describe both the artificial and natural
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Vertebrate Zoology Study Guide I. Taxonomy 1. Reasons for Taxonomy a. means of providing a systematic framework with which to work when studying the varied life forms inhabiting this earth b. establishes order from chaos c. Provides a system of nomenclature with which you label items (organisms) d. necessary when imagining trying to gather information on an unfamiliar organism e. Meant to provide a useful‚ convenient system using all evolutionary‚ adaptational‚ and anatomical aspects
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Grade 11 Biology Bio Ecology Field Study By‚ Colton Hatcher Introduction Hastings Point is a small coastal town located in New South Wales that is sounded by a national park. Hastings point has been a great location for tourists due to its marine wildlife‚ beaches and fishing. This destination is home to a magnificent rocky shore perfectly suited for a vast majority and wide range of marine wildlife. The rocky shore has a wide spread of both biotic and abiotic factors which provides a
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Grade 11 University Biology Exam Teacher: Mr. Anderson SBI 3U1 Jan 21‚ 2009 Time: 2 hours Total Marks /111 Pages 1-8 Name: _________________________ Instructions 1. All questions should be answered on the exam page. 2. There will be no talking and/or other disruptions during the exam. 3. If you have any questions raise your hand and a teacher will come to your desk to help you. 4. When you are finished please raise your hand the teacher will come to you
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be found almost everywhere in the world in inland saltwater. Although brine shrimp are considered to be members of a single genus‚ Artemis‚ and possibly a single species‚ there are a number of varieties. Brine shrimp are classified in the phylum Arthropoda ‚ subphylum Crustacea‚ class Branchiopoda‚ order Anostraca. Generally‚ they have stalked compound eyes and tapered bodies with a trunk that bears 11 pairs of legs. Females have a brood pouch where the young are released under favourable conditions
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AP Biology‚ Chapter 33 Invertebrates [by clade] SUMMARY INTRODUCTION PARAZOA Introduction Phylum Porifera: Sponges are sessile with porous bodies and choanocytes 1. Identify the parts of a sponge (including the spongocoel‚ porocyte‚ epidermis‚ choanocyte‚ mesohyl‚ amoebocyte‚ osculum‚ and spicule) and describe the function of each. a. Lifestyle: sessile‚ immobile filter feeders b. Water circulation i. Epidermis seals outside ii. Flagellated choanocytes lining
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OUTLINE. Introduction to the Question: -A subclass of pheromones is necromones‚ which contain oleic acid as a primary component. -Some pheromones trigger aggregation between organisms‚ others can trigger separation. -Necromones trigger necrophoric (organisms remove their dead) or necrophobic (organisms avoid their dead) behavior. -Arthropods use pheromones‚ this includes sowbugs and cockroaches. Chemical signals are picked up by antennae. II. Hypothesis: When given a choice between two identical
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