INSECTS By: Girish Darshan Sathvik. Insect ??? Any member of the class Insecta, the largest class of the phylum Arthropoda is called an insect. In a popular.

Slides:



Advertisements
Similar presentations
Where to look - Pests! Insects Nematodes Weeds Diseases
Advertisements

KAREN LANCOUR National Rules Committee Chairman- Life Sciences
Phylum Arthropoda Review. Word Bank Complete metamorphosis herbivores pesticides swimmerets exoskeleton bilateralantennaemolting Egg hatches to larva.
Chapter 2 Section 3.
Insects Block 1 January 13, 2015.
Lesson# 2 – Insect Anatomy Unit: Entomology Ms. Gutierrez.
Introduction to Arthropod & Insect Diversity. Scientific Classification Kingdom General specific Class Division/Phylum species Order Family Genus.
Ch 28-4 – Insects and Their Relatives. Uniramians – Centipedes, millipedes and insects Characterized by one pair of antennae and appendages that don’t.
Who Am I?. Insects Phylum Arthropoda (means jointed foot) Class Insecta includes all the true insects Class Arachnida spiders, mites, ticks.
Chapter 2 Section 3 - Insects. Section 3: Insects  Largest group of animals on Earth  Live everywhere but the ocean  Harmful: termites, weevils, mosquitoes.
Insect Structure.
Insects.
Phylum Arthropoda Textbook pgs
Question of the day… Finish Berlese Quiz Friday, April 18th 2008.
CHAPTER 33 INVERTEBRATES Copyright © 2002 Pearson Education, Inc., publishing as Benjamin Cummings Section D2: Protostomia: Ecdysozoa (continued) 2. Arthropods.
Insects Arthropods (segmented body, exoskeleton, and jointed appendages) Invertebrates Insects.
Insect outer morphology and structure of insect mouth parts
Ch. 37 Insects Most diverse and largest number of species of any class of organism. They were present on earth before the dinosaurs, over 300 million.
Original by Grant Lambdin Modified by Georgia Agriculture Education Curriculum Office –November 2005 Welcome to the World of Insects.
Diversity of Insects Arthropods make up about three-fourths of all named animal species. About 80 percent of arthropods are insects. Insects and Their.
wasps 3 Butterflies 4 Ladybirds 5 flies 6 gold beetles 7.
Class Symphyla Symphylans, also known as garden centipedes or glasshouse symphylans, are soil- dwelling arthropods of the class Symphyla in the subphylum.
Arthropods Chapter 28 Biology Auburn High School p. 760 – 783.
Insects Octavio’s Book Insects. Insects are Invertebrates, their body is encased in a tough shell.
ARTHROPODA.
General introduction to Entomology. Entomology “Entomology is the study of insects” Entoma; Mean segmented/Engrave. Logos; Mean study Both are Greek words.
There are 3 basic parts to an insect - the head, thorax (the central portion of the body) and abdomen (the ball typically seen on many insects). The head.
Athropods “arthros”“pod” “jointed” “foot”. Reigners and rulers of the world 4 make up over three quarters of the animal kingdom.
By Vincent Mannino County Extension Director – Fort Bend.
In a group: Create an insect out of the play dough provided.  Be ready to present your insect to the entire class. Include in presentation: # of legs.
INSECTS AND NEMATODES. 1)Describe the biology of insects 2)Classify insects 3)Classify nematodes and describe their biology 4)Explain scouting and threshold.
It's A Good Thing There Are Insects. Sometimes we call them bugs. But their real name is insects. All insects have six legs like a grasshopper.
“A Bug’s Life” Exploring and Understanding the Importance of Our Insect Friends.
Agriscience II Intro to Entomology. What is Entomology? Entomology is the study of insects. The study of insects includes their development, anatomy,
 What is an arthropod?  In the Phylum Arthropoda there are crabs, spiders, and insects.  They have segmented bodies, tough exoskeletons, and jointed.
Insects, Insect Body Parts, Insect Life Cycles
INSECTS. ARTHROPODS Insects are a class of living creatures within the phylum arthropoda. Arthropods means ‘jointed foot’. However, it is all their appendages.
Insects. It's A Good Thing There Are Insects All insects have six legs.
Where to look - Pests! Insects Nematodes Weeds Diseases
Introduction to Insects: Structure, Function, Development and Feeding Behavior.
Section 1 The Insect World
Welcome to the World of Insects.
Insects. Classification of Insects Kingdom Animalia –Invertebrates Phylum Arthropoda –Exoskeleton –Jointed legs.
Insects INSECTS Created by Susan Pool 5/2006. Insects Can Fly! There are millions of insects. Some of them fly, and some do not.
Subphylum Hexapoda Phylum Arthropoda.
INSECTS.
Insect Characteristics
Chapter 28 Arthropods Centipedes and Millipedes. 14. Subphylum Uniramia –Centipedes, millipedes and insects. A. Class Chilopoda 1. Centipedes a). One.
BUGS INSECTS are AWESOME. SO MANY INSECTS 6,000,000 to 10,000,000 different k inds of insects in the world Insects outnumber all other k inds of animals.
Phylum Arthropoda By: Kane Richardson. What is an Arthropod? Arthropods pollinate many of the flowering plants on Earth. Arthropods pollinate many of.
Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Diversity Ants, mosquitoes, gnats, flies, bees, crickets all belong.
Where to look - Pests! Insects Insects Nematodes Nematodes Weeds Weeds Diseases Diseases Rodents and other small mammals Rodents and other small mammals.
Kingdom Animalia Invertebrate phylums Arthropoda and Echinodermata.
Arthropods By nearly any measure, the most successful animals on the planet are the arthropods. They have conquered land, sea and air, and make up over.
TYPES OF LARVAE OF INSECTS
Insects.
5/11/15 Mr. Faia 6th Grade Science
Major Insect Orders.
Chapter 28 Insects 28-3.
Insects.
PHYLUM ARTHROPODA Largest phylum of the animal kingdom
Plant Science AAEC – Paradise Valley Spring 2015
Copyright Pearson Prentice Hall
Characteristics of insects
Chapter 28 Insects 28-3.
10.3 Insects.
Questions, p “Intriguing Insects”.
Regular Biology Chapter 28 Waggy
Phylum Arthropoda Review.
Presentation transcript:

INSECTS By: Girish Darshan Sathvik

Insect ??? Any member of the class Insecta, the largest class of the phylum Arthropoda is called an insect. In a popular sense, “insect” usually means the familiar pests or disease carriers, from bedbugs, houseflies, and clothes moths to Japanese beetles and aphids; the annoyers, such as mosquitoes, fleas, horseflies, and hornets; and the conspicuous butterflies and moths. Many insects are beneficial from a human viewpoint; they pollinate plants, produce useful substances, act as scavengers, and serve as food for other animals

ORIGIN The most primitive insects known are found as fossils in rocks and lived about 350,000,000 years ago. Those insects originated with the terrestrial branch of the phylum Arthropoda. The Arthropoda, whose origin is thus far unknown, probably arose in Precambrian times, perhaps as much as 1,000,000,000 years ago.

INSECT: IT’S PARTS The insect is covered by the cuticle, a layer of inert material laid down by a single sheet of epidermal cells. In present-day insects, the primitive segments are grouped into three regions known as head, thorax, and abdomen.

HEAD The first six segments have fused to form the head. The appendages of these segments have become modified into antennae that bear numerous sense organs and mouthparts that convey food to the mouth. Eyes also are prominent on the head. Insect mouthparts have been modified strikingly and reflect particular methods of feeding.

THORAX The insect thorax consists of three segments (called the prothorax, mesothorax, and metathorax), which may be fused but are usually recognizable. Each segment bears a pair of legs, and, in the mature insect, the mesothorax and metathorax typically carry a pair of wings.

ABDOMEN The abdomen consists of a maximum of 11 segments, although this number commonly is reduced by fusion. In some insects, notably crickets and cockroaches, two feelers, or cerci, at the hind end of the abdomen bear sense organs. Jerusalem Cricket

Sensory perception and reception Insects have an elaborate system of sense organs. Tactile hairs, concentrated on the antennae, palps, legs, and tarsi, cover the entire body surface. Exceedingly sensitive organs called sensilla are concentrated in organs of hearing Although the insect eye provides very poor form perception, insects by using a process of scanning probably can form adequate visual impressions of their surrounding Insects have chemoreceptors, which help in reception of smell and taste.

INSECT COMMUNITIES Social insects, however, have developed a division of labour in which the members must do the work required at the proper time. If the society is to succeed, its needs must be communicated to the individual, and the individual must act. E.g.: Bees, wasps Engine wasp

EFFECTS Many insects are plant feeders; they damage crops Direct injury to man by insect stings and bites is of relatively minor importance, Swarms of biting flies and mosquitoes often make life almost intolerable.

Damage to growing crops Insects are responsible for two major kinds of damage to growing crops. First is direct injury done to the plant by the feeding insect, which eats leaves or burrows in stems, fruit, or roots. The second type is indirect damage, in which the insect itself does little or no harm but transmits bacterial or, more frequently, viral infection into a crop

Commercial significance Insects provide sources of commercially important products—for example, honey, silk, wax, dyes, pigments—therefore, insects can be of direct benefit to man. The most important domesticated insects are the silkworm (Lepidoptera) and the honeybee (Hymenoptera). Silk carpet

ROLE IN NATURE Insects and flowers have evolved together. Many plants depend on insects for pollination. Some insects are predators of others. Insects aid bacteria, fungi, and other organisms in the decomposition of organic matter and in soil formation. pollination