Animalia Notes Continued - PowerPoint PPT Presentation

Loading...

PPT – Animalia Notes Continued PowerPoint presentation | free to download - id: 70ea99-NTA2Y



Loading


The Adobe Flash plugin is needed to view this content

Get the plugin now

View by Category
About This Presentation
Title:

Animalia Notes Continued

Description:

Animalia Notes Continued Part 2 *See class website for online virtual dissections! – PowerPoint PPT presentation

Number of Views:15
Avg rating:3.0/5.0
Slides: 47
Provided by: Jeremy216
Learn more at: http://www.msrago.com
Category:

less

Write a Comment
User Comments (0)
Transcript and Presenter's Notes

Title: Animalia Notes Continued


1
Animalia Notes Continued
  • Part 2
  • See class website for online virtual dissections!

2
Segmented Worms
  • Earthworms, leeches, and other segmented worms
    live in water or damp soil
  • Leeches were once used to suck out peoples
    excess blood and reduce harmful high blood
    pressure.
  • Leeches are uses today to produce
    anti-blood-clotting medicines, to suck blood from
    bruises, and to stimulate blood circulation in
    severed limbs that have been surgically
    reattached.

3
Segmented Worms (cont.)
  • Each segment is separated from its neighbors by a
    membrane and has its own excretory system and
    branches of the main nerves and blood vessels
    that run the length of the animal.
  • Both segmented and unsegmented worms have
    definite anterior and posterior ends.
  • Food travels through the digestive system in one
    direction from anterior to posterior.
  • A cluster of nerve cells at the anterior end
    serves as a simple brain.
  • Reproduction occurs by splitting or by mutual
    fertilization.

4
Phylum Annelida
  • Earthworms, leeches- segmented worms
  • Each segment is separated from the next by a
    membrane
  • Closed circulatory system with blood vessels that
    run the length of the animal.
  • Has a complete excretory and digestive system
  • Branches of the main nerves and clusters of nerve
    cells at the anterior end serves as a simple
    brain.
  • Live in water or damp soil Bilateral symmetry
  • Reproduction occurs by splitting or by mutual
    fertilization (hermaphrodites)

5
  • Ear thworms and Their Relatives
  • Eat their way through soil
  • Have a closed circulatory system

Figure 18.10A
6
(No Transcript)
7
(No Transcript)
8
Phylum Annelida (cont.)
  • Leeches

9
Phylum Mollusca
  • Includes snails, clams, slugs, squid, and their
    relatives.
  • Bilateral sym. coelomates
  • Radula- scrapes up food complete digestive tract
  • Separate sexes sexual reproduction
  • Mollusks have soft bodies with 3 parts
  • A visceral mass that contains most of the organs
  • 2) A muscular foot that is used in movement
  • 3) A thick flap called a mantle, which covers
    the body and in most species produces a heavy
    shell of calcium compounds.

10
Phylum Mollusca (cont.)
  • Mollusks pump water through gills- both for
    oxygen and food for clams and oysters.
  • Squid and octopi use the pump for jet propulsion
    through the water in search of prey.

11
Phylum Mollusca
12
  • Diverse mollusks are variations on a common body
    plan
  • All mollusks have a muscular foot and a mantle,
    which may secrete a shell that encloses the
    visceral mass
  • Many mollusks feed with a rasping radula

13
  • Gastropods
  • The largest group of mollusks and include the
    snails and slugs

14
  • Bivalves
  • Have shells divided into 2 halves and include
    clams, oysters, mussels, and scallops

15
  • Cephalopods
  • Adapted to be agile predators and
  • include squids and octopi

16
Phylum Arthropoda
  • The largest animal phylum- 1 million species of
    crabs, shrimp, spiders, scorpions and insects
    make up this phylum
  • Have jointed appendages segmented bodies
  • Exoskeletons made of chitin
  • Molt have heads with many sensory organs.
  • Bilateral
  • Simple and complex eyes that detect only light
    intensity and form images
  • Antennae that smell chemical substances in the
    environment

17
Phylum Arthropods (cont.)
  • Sexual Reproduction- where sperm is released
    inside the females body, not in water.
  • Larvae of many species develop into very
    different adults, a process called metamorphosis.
  • Can develop resistance to insecticides-
    demonstrates how quickly they adapt to a changing
    environment.
  • Short generations and many offspring increase the
    chance that random mutations will produce a few
    resistant individuals

18
  • Ar thropods are segmented animals with jointed
    appendages and an exoskeleton

19
  • Chelicerates
  • Include horseshoe crabs and arachnids, such as
    spiders, scorpions, mites, and ticks

20
  • Millipedes and Centipedes
  • Are identified by the number of jointed legs per
    body segment

21
  • Crustaceans
  • - Are nearly all aquatic
  • - Include crabs, shrimps, and barnacles

22
  • Insects are the most diverse group of arthropods
  • Insects have a 3 -par t body consisting of
  • Head, thorax, and abdomen
  • Three sets of legs
  • Wings (most, but not all insects)
  • Many insects undergo incomplete or complete
    metamorphosis

23
  • A. Order Orthoptera
  • Grasshoppers, crickets, katydids, and locusts
  • B. Order Odonata
  • Dragonflies and damselflies

Figure 18.12A
24
  • C. Order Hemiptera
  • Bedbugs, plant bugs, stinkbugs, and water striders
  • D. Order Coleoptera
  • Beetles

25
  • E. Order Lepidoptera
  • Moths and butter flies
  • F. Order Diptera
  • Flies, fruit flies, houseflies, gnats, mosquitoes

26
  • G. Order Hymenoptera
  • Ants, bees, and wasps

27
Phylum Echinodermata
  • Sea stars and sea urchins.
  • Reproduce sexually.
  • Sperm and eggs are released in water, where they
    join and fertilize
  • Movement by seawater into and out of a system of
    internal tubes.

28
  • The water vascular system - has suction cuplike
    tube feet used for respiration and locomotion

29
Phylum Echinodermata
30
Phylum Chordata
  • Vertebrates-fish, amphibians, reptiles, birds,
    and mammals.
  • Full development of organ systems
  • Mostly sexual reproduction
  • 4 defining characteristics
  • Stiff dorsal rod helps to organize the embryo's
    development.
  • The central nervous system (brain and spinal
    cord) is tubular
  • Their sides have slits just behind the head.
    These pharyngeal slits (pharynx means throat)
    becomes gill slits of adult fish. In
    air-breathing chordates, they develop into
    various organs such as internal parts of the ears
  • They have a tail in humans its the tailbone, or
    coccyx, which curls internally.

31
Phylum Chordata
32
  • Lampreys are ver tebrates that lack hinged jaws
    and paired fins

Most vertebrates have hinged jaws which may have
evolved from skeletal supports of the gill slits
33
  • CLASS Fish
  • Jawed ver tebrates with gills and paired fins
    include sharks, ray-finned fishes, and lobe-fins

34
  • Chondrichthyans
  • Have a flexible skeleton made of car tilage
  • Include sharks and rays

35
  • Ray-finned Fishes
  • A skeleton reinforced with a hard matrix of
    calcium phosphate
  • Operculi that move water over the gills
  • A buoyant swim bladder

36
  • Lobe-fins
  • Have muscular fins suppor ted by bones

37
  • CLASS Amphibians
  • The first tetrapodsver tebrates with 2 pairs of
    limbs allowing movement on land

38
  • Include frogs, toads, and salamanders
  • Most amphibian embryos and larvae must develop in
    water

39
  • CLASS Reptiles
  • Amniotes tetrapods with a terrestrially adapted
    egg
  • Terrestrial adaptations include
  • Waterproof scales
  • A shelled, amniotic egg
  • Ectothermic

40
  • Dinosaurs were the most diverse reptiles to
    inhabit land
  • Largest animals ever to inhabit land
  • May have been endothermic, producing their own
    body heat

41
  • CLASS Birds
  • Considered feathered reptiles with adaptations
    for flight
  • Birds thought to have evolved from small,
    two-legged dinosaurs called theropods

42
  • Birds are reptiles that have
  • Wings, feathers, endothermic metabolism, and many
    other adaptations related to flight such as light
    bones

Flight ability is typical of birds but there are
a few flightless species
43
CLASS Mammals
  • Amniotes that have hair, produce milk, and are
    endothermic
  • Hair, which insulates their bodies
  • Mammary glands, which produce milk
  • Monotremes lay eggs

44
  • The embryos of marsupials and eutherians are nur
    tured by the placenta within the uterus
  • Marsupial offspring complete development attached
    to the mother, usually inside a pouch

45
  • Eutherians- placental mammal complete development
    before bir th

46
The End of Animalia Notes!
About PowerShow.com