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118 Cards in this Set

  • Front
  • Back

Insect Characteristics

~ Most have the same general body plan, specialized mouth parts for feeding and a unique lifecycle and the ability to fly.


~ Thorax is composed of 3 fused segments with three pairs of jointed walking legs attached


~ Most have specialized mouthparts called a mandible


~ Types of feeding vary from sucking blood, chewing seeds or wood and sucking nectar from flowers.

Insects: Adaptions For Flight

~ They have light weight bodies, wings and strong muscles to power flight


~ Insects were the first animals to have wings


~ Flying insects were able to reach previously inaccessible food sources and to escape from danger


~ Wings develop from saclike outgrowths of the body wall of the thorax


~ Most insects have two pairs of wings

Insect Life Cycle

~ Undergo metamorphosis


~ Almost all undergo complete

Social Insects

~ elaborate social systems involving specialization of labor, parental care and communication


~ The role that an individual plays is a caste


~ Caste is determined by diet, hormones, and pheromones


~ Social insects include honeybees, termites and ants


~ Bees have a queen, workers and drone males


~ Termites have a king, queen and workers

Centipedes & Milipedes

~ Known as Myriapods which means "many footed"


~ They are not considered insects


~ Each myriapod has a head region and many similar segments


~ Centipedes have one pair of legs per segment and millipedes usually have two pairs of legs per segment.

Arthropod Characteristics

~ distinguished by having a segmented body, jointed appendages, and a hard external skeleton (exoskeleton)

Arthropod Characteristics: Segmented Bodies

~ Head, Thorax and Abdomen


~ Some Arthropods such as crabs have a head that is fuses with the thorax (called cephalothorax)

Arthropod Characteristics: Jointed Appendages

~ An appendage is a structure that expends from the Arthropods body wall


~ unlike the parapodia and setae of annelids, Arthropods have appendages that bend


~ Arthropod mean "jointed foot"

Arthropod Characteristics

~ distinguished by having a segmented body, jointed appendages, and a hard external skeleton (exoskeleton)

Arthropod Characteristics: Segmented Bodies

~ Head, Thorax and Abdomen


~ Some Arthropods such as crabs have a head that is fuses with the thorax (called cephalothorax)

Arthropod Characteristics: Jointed Appendages

~ An appendage is a structure that expends from the Arthropods body wall


~ unlike the parapodia and setae of annelids, Arthropods have appendages that bend


~ Arthropod mean "jointed foot"

Arthropod Characteristics: Exoskeleton

~ rigid outer layer of the body


~ composed primarily of the carbohydrate Chitin


~ provides protection against predators and helps prevent against water loss


~ it does not grow, anthropods shed their exoskeleton and form a new one (molting)

Examples Of Class Insecta

Stink bug, praying mantis, termite, ant, centipede, millipede

Arthropod Characteristics: Respiration & Circulation

~ many land Arthropods breathe through a network of fine tubes called trachea.


~ other land Arthropods breathe through book lungs


~ most aquatic Arthropods breathe through gills


~ circulation is open

Arthropod Characteristics

~ distinguished by having a segmented body, jointed appendages, and a hard external skeleton (exoskeleton)

Arthropod Characteristics: Segmented Bodies

~ Head, Thorax and Abdomen


~ Some Arthropods such as crabs have a head that is fuses with the thorax (called cephalothorax)

Arthropod Characteristics: Jointed Appendages

~ An appendage is a structure that expends from the Arthropods body wall


~ unlike the parapodia and setae of annelids, Arthropods have appendages that bend


~ Arthropod mean "jointed foot"

Arthropod Characteristics: Exoskeleton

~ rigid outer layer of the body


~ composed primarily of the carbohydrate Chitin


~ provides protection against predators and helps prevent against water loss


~ it does not grow, anthropods shed their exoskeleton and form a new one (molting)

Examples Of Class Insecta

Stink bug, praying mantis, termite, ant, centipede, millipede

Arthropod Characteristics: Respiration & Circulation

~ many land Arthropods breathe through a network of fine tubes called trachea.


~ other land Arthropods breathe through book lungs


~ most aquatic Arthropods breathe through gills


~ circulation is open

Arthropod Characteristics: Feeding, Digestion and Excretion

~ different arthropod groups have varied mouthparts and other appendages


~ the intestinal tract extends from the mouth to the Amy's and contains structures specialized for storage,


Mechanical and chemical digestion, nutrient absorption and elimination of digestive wastes


~ excretory system is composed of Malpighan tubules (must be capitalized)

Arthropod Characteristics

~ distinguished by having a segmented body, jointed appendages, and a hard external skeleton (exoskeleton)

Arthropod Characteristics: Segmented Bodies

~ Head, Thorax and Abdomen


~ Some Arthropods such as crabs have a head that is fuses with the thorax (called cephalothorax)

Arthropod Characteristics: Jointed Appendages

~ An appendage is a structure that expends from the Arthropods body wall


~ unlike the parapodia and setae of annelids, Arthropods have appendages that bend


~ Arthropod mean "jointed foot"

Arthropod Characteristics: Exoskeleton

~ rigid outer layer of the body


~ composed primarily of the carbohydrate Chitin


~ provides protection against predators and helps prevent against water loss


~ it does not grow, anthropods shed their exoskeleton and form a new one (molting)

Examples Of Class Insecta

Stink bug, praying mantis, termite, ant, centipede, millipede

Arthropod Characteristics: Respiration & Circulation

~ many land Arthropods breathe through a network of fine tubes called trachea.


~ other land Arthropods breathe through book lungs


~ most aquatic Arthropods breathe through gills


~ circulation is open

Arthropod Characteristics: Feeding, Digestion and Excretion

~ different arthropod groups have varied mouthparts and other appendages


~ the intestinal tract extends from the mouth to the Amy's and contains structures specialized for storage,


Mechanical and chemical digestion, nutrient absorption and elimination of digestive wastes


~ excretory system is composed of Malpighan tubules (must be capitalized)

Arthropod Characteristics: Compound Eyes

~ many have eyes composed of 1000s of individual visual units or lenses


~ brain receives input from these units and then composed an image of the object


~ eye is good at detecting movement

Arthropod Life Cycle

~ most reproduce only sexually


~ some can produce offspring from Unfertilized eggs


~ eggs are usually laid outside of the female body and when hatched, will recieve no parental care

Arthropod Life Cycle

~ most reproduce only sexually


~ some can produce offspring from Unfertilized eggs


~ eggs are usually laid outside of the female body and when hatched, will recieve no parental care

Molting

~ Since the exoskeleton does not grow it must be shed and they must grow a new one


~ allows Arthropods to grow a larger body

Arthropod Life Cycle

~ most reproduce only sexually


~ some can produce offspring from Unfertilized eggs


~ eggs are usually laid outside of the female body and when hatched, will recieve no parental care

Molting

~ Since the exoskeleton does not grow it must be shed and they must grow a new one


~ allows Arthropods to grow a larger body

Examples Of Arthropods

Lobster, Crayfish, Tick, House Fly, Scorpion, Horseshoe Crab "living fossil", Milipede, Honeybee, Centipede, Spider, Larva or Butterfly

Arthropod Life Cycle

~ most reproduce only sexually


~ some can produce offspring from Unfertilized eggs


~ eggs are usually laid outside of the female body and when hatched, will recieve no parental care

Molting

~ Since the exoskeleton does not grow it must be shed and they must grow a new one


~ allows Arthropods to grow a larger body

Examples Of Arthropods

Lobster, Crayfish, Tick, House Fly, Scorpion, Horseshoe Crab "living fossil", Milipede, Honeybee, Centipede, Spider, Larva or Butterfly

Groups Of Arthropods

~ Four main subphyla:


1. Hexapoda (insects)


2. Myriapoda (millipedes and centipedes)


3. Crustacea ( Lobsters & Shrimps)


4. Chelicerata ( Spiders, Scropions, mites and ticks)


~ living Arthropods are divided into two groups: with jaws ( other subphyla) and with fangs or pincers (chelicerata)


~ total number of Arthropods exceeded number of all other animals combine


~ Exoskeleton is adapted to life on land, they are small and show a wind range of specialization in food and habitats.

Arthropod Life Cycle

~ most reproduce only sexually


~ some can produce offspring from Unfertilized eggs


~ eggs are usually laid outside of the female body and when hatched, will recieve no parental care

Molting

~ Since the exoskeleton does not grow it must be shed and they must grow a new one


~ allows Arthropods to grow a larger body

Examples Of Arthropods

Lobster, Crayfish, Tick, House Fly, Scorpion, Horseshoe Crab "living fossil", Milipede, Honeybee, Centipede, Spider, Larva or Butterfly

Groups Of Arthropods

~ Four main subphyla:


1. Hexapoda (insects)


2. Myriapoda (millipedes and centipedes)


3. Crustacea ( Lobsters & Shrimps)


4. Chelicerata ( Spiders, Scropions, mites and ticks)


~ living Arthropods are divided into two groups: with jaws ( other subphyla) and with fangs or pincers (chelicerata)


~ total number of Arthropods exceeded number of all other animals combine


~ Exoskeleton is adapted to life on land, they are small and show a wind range of specialization in food and habitats.

Complete Metamorphasis

~ A drastic change in form


~ 3 stages of development


~ insect has completely different form at each stage of development

Arthropod Life Cycle

~ most reproduce only sexually


~ some can produce offspring from Unfertilized eggs


~ eggs are usually laid outside of the female body and when hatched, will recieve no parental care

Molting

~ Since the exoskeleton does not grow it must be shed and they must grow a new one


~ allows Arthropods to grow a larger body

Examples Of Arthropods

Lobster, Crayfish, Tick, House Fly, Scorpion, Horseshoe Crab "living fossil", Milipede, Honeybee, Centipede, Spider, Larva or Butterfly

Groups Of Arthropods

~ Four main subphyla:


1. Hexapoda (insects)


2. Myriapoda (millipedes and centipedes)


3. Crustacea ( Lobsters & Shrimps)


4. Chelicerata ( Spiders, Scropions, mites and ticks)


~ living Arthropods are divided into two groups: with jaws ( other subphyla) and with fangs or pincers (chelicerata)


~ total number of Arthropods exceeded number of all other animals combine


~ Exoskeleton is adapted to life on land, they are small and show a wind range of specialization in food and habitats.

Complete Metamorphasis

~ A drastic change in form


~ 3 stages of development


~ insect has completely different form at each stage of development

Complete Metmorphasis: Larva Stage

~ "wormlike"


~ immature, feeding stage


~ ex. caterpillars

Arthropod Life Cycle

~ most reproduce only sexually


~ some can produce offspring from Unfertilized eggs


~ eggs are usually laid outside of the female body and when hatched, will recieve no parental care

Molting

~ Since the exoskeleton does not grow it must be shed and they must grow a new one


~ allows Arthropods to grow a larger body

Examples Of Arthropods

Lobster, Crayfish, Tick, House Fly, Scorpion, Horseshoe Crab "living fossil", Milipede, Honeybee, Centipede, Spider, Larva or Butterfly

Groups Of Arthropods

~ Four main subphyla:


1. Hexapoda (insects)


2. Myriapoda (millipedes and centipedes)


3. Crustacea ( Lobsters & Shrimps)


4. Chelicerata ( Spiders, Scropions, mites and ticks)


~ living Arthropods are divided into two groups: with jaws ( other subphyla) and with fangs or pincers (chelicerata)


~ total number of Arthropods exceeded number of all other animals combine


~ Exoskeleton is adapted to life on land, they are small and show a wind range of specialization in food and habitats.

Complete Metamorphasis

~ A drastic change in form


~ 3 stages of development


~ insect has completely different form at each stage of development

Complete Metmorphasis: Larva Stage

~ "wormlike"


~ immature, feeding stage


~ ex. caterpillars

Complete Metamorphosis: Puple Stage

~ Chrysalis


~ non feeding; inactive


~ Morphologically distinct, non-feeding stage


~ often protected by a cocoon over winter in this stage

Arthropod Life Cycle

~ most reproduce only sexually


~ some can produce offspring from Unfertilized eggs


~ eggs are usually laid outside of the female body and when hatched, will recieve no parental care

Molting

~ Since the exoskeleton does not grow it must be shed and they must grow a new one


~ allows Arthropods to grow a larger body

Examples Of Arthropods

Lobster, Crayfish, Tick, House Fly, Scorpion, Horseshoe Crab "living fossil", Milipede, Honeybee, Centipede, Spider, Larva or Butterfly

Groups Of Arthropods

~ Four main subphyla:


1. Hexapoda (insects)


2. Myriapoda (millipedes and centipedes)


3. Crustacea ( Lobsters & Shrimps)


4. Chelicerata ( Spiders, Scropions, mites and ticks)


~ living Arthropods are divided into two groups: with jaws ( other subphyla) and with fangs or pincers (chelicerata)


~ total number of Arthropods exceeded number of all other animals combine


~ Exoskeleton is adapted to life on land, they are small and show a wind range of specialization in food and habitats.

Complete Metamorphasis

~ A drastic change in form


~ 3 stages of development


~ insect has completely different form at each stage of development


~ Ex. Butterfly

Complete Metmorphasis: Larva Stage

~ "wormlike"


~ immature, feeding stage


~ ex. caterpillars

Complete Metamorphosis: Puple Stage

~ Chrysalis


~ non feeding; inactive


~ Morphologically distinct, non-feeding stage


~ often protected by a cocoon over winter in this stage

Complete Metamorphosis: Adult Stage

~ final stage produced as the pupa undergoes extensive reorganization both Internally and externally

Larval & Adult forms are usually...

~ Different in body forms


~ Live in different habitats


~ Consume different foods


~ Have different lifestyles or different niches

Incomplete Metamorphosis

~ A gradual change in form


~ Ex. Grasshopper and Dragonfly

Incomplete Metamorphosis: Nymph Stage Or Naiad Stage

~ Nymph Stage (Terrestrial)


- Example: Grasshopper


~ Naiad Stage (Aquatic)


- Example: Dragonfly


~ Immature stage that looks similar to the adult but much smaller


~ Lacks sexually functioning body parts at this stage


~ Insects get larger with each successive molt

Incomplete Metamorphosis: Adult Stage

~ Sexually mature

Complete Metamorphosis Diagram

Incomplete Metamorphosis Diagram

Subphylum Uniramia

~ One pair of antennae


~ Appendages that do not branch


~ inhabit almost every terrestrial habitat on Earth


~ Some fresh water and others in marine habitats


Class Diplopoda; Uniramians

~ Round body


~ Segmented body


~ Two pairs of legs per segment


~ Also known as myriapods


~ " Thousand " feet


~ Example: Millipedes


Class Chilopoda; Uniramians

~ Flattened body


~ Segmented body


~ One pair of legs per segment


~ Myriapods


~ "Hundred" feet


~ Example: Centipedes


~ Poisonous

Class Crustacea; Crustacea

~ Hard


~ Flexible exoskeleton


~ Gills


~ Branched anttenae


~ Two body sections: abdomen, cephalothorax


~ Mostly aquatic


~ Example: Crayfish, Lobster, Barnacles, Crab, Pill Bugs

Ant Diagram

Waggle Dance

~ Bees do it


~ Means far food source > 50 metres


Round Dance

~ Bees do it


~ Means nearby food source < 50 metres

Mandibles

Chewing/ biting jaws

Queen Bee/ Worker Bees

The Queen secretes "royal jelly" which is a pheremone which prevents other female forms from becoming queen and keeps them as workers

Pheremone and Cricket Chirps

Used to attack a mate

Insect Society, Caste

Insects have a predetermined destiny to be either a queen, worker, drone, etc. in social insects

Class Arachnida; Chelicerata

~ Two body sections: abdomen, cephalothorax


~ No antenna


~ four pairs of legs


~ Subphylum chelicerata


~ Pedipalps


~ Spinnerets


~ Example: Spiders, Scorpion

Class Insecta; Uniramians

~ Three body sections


~ One pair of antenna (unbranched)


~ Three pairs of legs


~ mandibles


~ Example: Dragonfly and Grasshopper

Positive and Negative effects of arthropods on humans

~ Positive: Agriculture, food products like honey, silkworms make silk, food source to some, prey upon other harmful species, chemicals, science advancements, can prevent spoilage, chiton used for surgical stitches, spider webs for kevlair


~ Negative: Can cause damage to other animals and crops, inflict annoying bites or harmful diseases, termites cause damage to wood, must spend large sums of money on dangerous chemicals to save crops

Echinoderm Characteristics

~ All adult echinoderms have an internal skeleton, 5 part body, radial symmetry, a water vascular system and the ability to breathe through their skin.


~ Echinoderms are recognized by the spires that project their internal skeleton through their outer covering.


~ Echinoderm means "spiny skinned"

Echinoderm Characteristics: Endoskeleton

~ Have a calcium rich endoskeleton that is composed of individual plates called ossicles


~ In most echinoderms, the plates of the endoskeleton bear spines that project outward through the skin.

Echinoderm Characteristics: Five Part Radial Symmetry

~ Have a 5 part body plan with arms that radiate from a central point


~ the number of arms can vary


~ Echinoderms have no head or brain


~ Their nervous system consists of a central ring of nerves called the ring canal, with branches extending into each of the arms

Echinoderm Characteristics: Water Vascular System

~ Echinoderms have a water-filled system of interconnected canals with 1000s of tiny, hollow tube feet


~ The tube feet are tiny legs that can be used to move, grip surfaces or manipulate objects.


~ Gas exchange and water excretion also takes place through the thin wall of the tube feet

Echinoderm Characteristics: Respiration and Circulation

~ The body cavity or coelom function as a simple circulatory and respiratory system as particles and respiratory gases move freely throughout the large, fluid-filled coelom


~ Many echinoderms have skin gills that aid with respiration and water removal


~ The skin gills create a larger surface area through which respiratory gases can be exchanged

Skin Gills

Small fingerlike projections that grow among the echinoderm's spines

Echinodermata; Class Asteroidea

~ Sea Star


~ Radial Symmetry


~ 5 Part Body Plan


~ Distinguishing Features: Length of arms determines how the animal eats

Echinodermata; Class Ophiuroidea

~ Brittle Stars, Basket Stars


~ Radial Symmetry


~ 5 Part Body Plan


~ Distinguishing Features: Long, thin arms, small central disc; suckers feet

Echinodermata; Class Crinoidea

~ Sea Lilies and Feather Stars


~ Radial Symmetry


~ 5 Part Body Plan


~ Distinguishing Features: Almost Sessile; mouth is on the dorsal side

Echinodermata; Class Echinoidea

~ Sea Urchins and Sand Dollars


~ Radial Symmetry


~ Spherical; Disc shaped


~ Distinguishing Features: Large spines, used for protection

Echinodermata; Class Holothuroidea

~ Sea Cucumbers


~ Radial Symmetry


~ 5 strips of muscles


~ Distinguishing Features: Tentacle like tube feet surrounding a mouth can eject digestive system

Main Difference Between Sea Stars, Brittle Stars and Basket Stars

~ Sea stars have thick arms which brittle stars and basket stars ace long, slender arms that radiate from a central disc and they may be branched

How does the ability to move differ in the sea lily and the feather star?

~ The sea lily is permanently sessile while the feather stars can break away from their stalks and swim freely

How do sea urchins use their spines?

Sea urchin use their spines for defence from predators and for movement in association with tube feet

How do sea cucumbers defend themselves?

They shoot long, sticky threads which can inflate and are poisonous to some predators. The threads distract the predator so they can get away. They can be brightly coloured or patterned to indicate that the are bad tasting.

Overview Of Echinoderms

~ Have bilateral symmetry as larva


~ Have radial symmetry as adults


~ Live only in marine environments


~ Have an endoskeleton (made of calcium)


~ Are multicellular


~ Lack a backbone


~ Are Deuterstomes


~ Have spiny skin


~ Have a water vascular system


~ A sea star is an exam


~ Are distantly related to chordates


~ Have fewer systems than anthropods


How are echinoderms simpler in structure than arthropods and other invertebrates?

~ They have bilateral symmetry and do not exhibit cephalization as they have no brain and do not have a central nervous system


~ They also have very few organ systems

Evolutionary Relationship between Echinoderms and Chordates

Based on fossils, deutersomes evolved from protostomes more than 600 million years ago and echinoderms and chordates diverged from each other 500 million years ago.

What evidence suggests to scientists that deuterostomes evolved from protostomes

Fossils

Water Vascular System

~ Water enters through the madreporite


~ Water passes into the ring canal + into the radial arms (radial canal)


~ the ampulla forces H2O through the canal + works with the muscle contractions to move the starfish

Starfish Regeneration

~ Regeneration happens only if the body part contains the central disc

Arrangement of the body organs of a sea star

~ Radial symmetry with body organs repeated in each arm of the sea star

Sea Star Anatomy

Sea Star Internal Nerve Anatomy

Arthropod Life Cycle

~ most reproduce only sexually


~ some can produce offspring from Unfertilized eggs


~ eggs are usually laid outside of the female body and when hatched, will recieve no parental care

Molting

~ Since the exoskeleton does not grow it must be shed and they must grow a new one


~ allows Arthropods to grow a larger body

Examples Of Arthropods

Lobster, Crayfish, Tick, House Fly, Scorpion, Horseshoe Crab "living fossil", Milipede, Honeybee, Centipede, Spider, Larva or Butterfly

Groups Of Arthropods

~ Four main subphyla:


1. Hexapoda (insects)


2. Myriapoda (millipedes and centipedes)


3. Crustacea ( Lobsters & Shrimps)


4. Chelicerata ( Spiders, Scropions, mites and ticks)


~ living Arthropods are divided into two groups: with jaws ( other subphyla) and with fangs or pincers (chelicerata)


~ total number of Arthropods exceeded number of all other animals combine


~ Exoskeleton is adapted to life on land, they are small and show a wind range of specialization in food and habitats.

Complete Metamorphasis

~ A drastic change in form


~ 3 stages of development


~ insect has completely different form at each stage of development

Complete Metmorphasis: Larva Stage

~ "wormlike"


~ immature, feeding stage


~ ex. caterpillars

Complete Metamorphosis: Puple Stage

~ Chrysalis


~ non feeding; inactive


~ Morphologically distinct, non-feeding stage


~ often protected by a cocoon over winter in this stage

Complete Metamorphosis: Adult Stage

~ final stage produced as the pupa undergoes extensive reorganization both Internally and externally

Larval and adult forms differ

Dg