INSECTS An insect is a creature without a backbone and with a body divided into three main parts: the head‚ thorax and abdomen. Most insects have three pairs of legs and one or two pairs of wings. The ’feelers’ or antennae on the insect’s head are it sense of touch and smell. Some insects have a sting in the abdomen. We already know that there are over a million different kinds of insects‚ and many new species are being found all the time. Insects are by far the biggest group of creatures on
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Bt-corn and its Effects on Danaus plexippus Recently‚ in response to the chronic problem of insects destroying crops and from the known effects of pesticides on humans and on the environment‚ a new form of insecticide was discovered‚ particularly for corn. In this new case‚ the organism itself is genetically modified for protection. This insect-resistant corn is the new Bt-corn and contains genetic material from the donor organism‚ a bacterium. Bacillus thuringiensis contains a protein that kills
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INSECTS Insects‚ being larger and having a hard‚ chitinous and therefore impermeable exoskeleton‚ have a more specialised gas exchange system. Insects have no transport system so gases need to be transported directly to the respiring tissues. There are tiny holes called spiracles along the side of the insect. The spiracles are openings of small tubes running into the insect’s body‚ the larger ones being called tracheae and the smaller ones being called tracheoles. The ends of these tubes‚ which
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commercialization of Bt-Corn breeds: how it is both economically efficient and overall beneficial for the environment.” Abstract This paper discusses and evaluates both the negative and positive aspects and raised controversial issues regarding Bt-Corn‚ a transgenic maize developed through genetic engineering and biotechnology methods‚ and will finally conclude that the commercialization of Bt-Corn breeds for the past 14 years have been both economically advantageous and beneficial for the environment
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cuisine by Adrian Forsyth Can Insects Help with Food Shortage in the World? As the number of humans increase‚ we will have to look for new sources of food. In some cultures‚ insects have been consumed for thousand of years‚ and many countries in the world such as China‚ Thailand‚ South America and Africa use insects as a delicacy and for snacks because they are tasty and nutritious‚ high in protein‚ and low in carbohydrates. One of the advantages with insects is their abundance and that
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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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THE USE OF INSECTS AS A FOODSOURCE. IS IT THE DREAM OF IDEALISTS OR THE WAY OF THE FUTURE? 12/5/2013 THE USE OF INSECTS AS A FOOD SOURCE It is a fact that over seventy percent of the words populous derive some level of protein and nutrients from insect-based food sources. In this country‚ it is looked at as uncouth or taboos to even consider such an act as consuming
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Social Insects “The little things that run the world”- E.O. Wilson Social Insects I. Levels of sociality II. Castes and Polyethism III. Social insect examples IV. Ecological success Society • A group of individuals that belong to the same species and are organized in a cooperative manner. Aggregations • Non-social grouping of individuals Monarch butterflies aggregating Levels of Sociality • • • • • Solitary Subsocial Parasocial Eusocial Presocial Classification system
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Hum of Insects – Robert Lynd As the hum of insects and noises of birds are associated with nature and seasons‚ so are they connected to our life‚ right from our childhood. When we grow up‚ these sounds occasionally pull us back to our childhood. In a way‚ our happiness‚ other than that achieved from people‚ has its origin in the nature‚ in spring and summer‚ in the hum and noises of insects and birds. The author begins with insects like bees‚ wasps and mosquitoes and analyse their behavior Insects
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López Hernández ID: A01211745 Due Date: 19/08/2008 “Design your own Bio Lab” Dependent and Independent Variables Problem Statement: How different wavelengths of light affect the rate of photosynthesis? Variables: * Dependent: wavelength of light (color) * Independent: * Control: Method for controlling variables: All types of corn must be grown in the same soil and nutrient conditions‚ watering amounts and light conditions. They must be grown in separated plant chambers‚ and the seeds will be planted
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