Introduction to Animals - PowerPoint PPT Presentation

Loading...

PPT – Introduction to Animals PowerPoint presentation | free to download - id: 684913-ODM4N



Loading


The Adobe Flash plugin is needed to view this content

Get the plugin now

View by Category
About This Presentation
Title:

Introduction to Animals

Description:

Introduction to Animals INTRODUCTION TO ANIMALS Most diverse kingdom in appearance More than 1 million species! Each phylum has its own typical body plan (arrangement ... – PowerPoint PPT presentation

Number of Views:43
Avg rating:3.0/5.0
Date added: 11 October 2019
Slides: 36
Provided by: CharlesF166
Learn more at: http://www.spart5.net
Category:

less

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

Title: Introduction to Animals


1
Introduction to Animals
2
INTRODUCTION TO ANIMALS
  • Most diverse kingdom in appearance
  • More than 1 million species!
  • Each phylum has its own typical body plan
    (arrangement)

3
WHAT IS AN ANIMAL?
  • Animals
  • are heterotrophic
  • are eukaryotic
  • are multicellular
  • lack cell walls

4
WHAT IS AN ANIMAL?
  • 95 invertebrates (do not have backbone)
  • 5 vertebrates (have a backbone)

5
WHAT IS AN ANIMAL?
  • Anatomy the structure of the organism/organs
  • ?what it is
  • Physiology study of the functions of organs
  • ?how it works

6
WHAT IS AN ANIMAL?
  • Homeostasis (balance) is maintained by internal
    feedback mechanisms
  • Ex dog panting releases heat, you sweat to
    release heat

7
FUNCTIONS OF ANIMALS
  • Feeding ? animals must obtain energy by eating
  • Examples of types of feeding
  • Herbivore eats plants
  • Carnivore eats animals
  • Omnivore eats plants and animals
  • Scavenger eats dead organisms
  • Detritivore feed on decaying organic material
  • Filter Feeders aquatic animals that strain food
    from water
  • Parasite lives in or on another organism
    (symbiotic relationship)

8
FUNCTIONS OF ANIMALS
  • Respiration ?animals require oxygen
  • Take in O2 and give off CO2
  • Lungs, gills, through skin, simple diffusion

9
FUNCTIONS OF ANIMALS
  • Circulation ? animals must move necessary
    materials within their bodies
  • Very small animals rely on diffusion
  • Larger animals have circulatory system

10
FUNCTIONS OF ANIMALS
  • Excretion ? animals must expel waste
  • Primary waste product is ammoniaLiquid waste

11
FUNCTIONS OF ANIMALS
  • Response ? animals respond to a stimulus
  • Receptor cells sound, light, external stimuli
  • Nerve cells nervous system

12
FUNCTIONS OF ANIMALS
  • Movement ?
  • Most animals are motile (can move)
  • Muscles usually work with a skeleton

13
FUNCTIONS OF ANIMALS
  • Reproduction ? animals must reproduce
  • Most reproduce sexually genetic diversity
  • Many invertebrates can also reproduce asexually
    to increase their numbers rapidly

14
LEVELS OF ORGANIZATION
  • Cell Specialization and Levels of
    Organizationcells ? tissues ? organs ? organ
    systems

15
EARLY DEVELOPMENT
  • Zygote fertilized egg
  • Blastula a hollow ball of cells
  • Blastopore the blastula folds in creating this
    opening
  • Protostome mouth is formed from blastopore
  • Deuterostome anus is formed from blastopore
  • Anus opening for solid waste removal from
    digestive tract

16
EARLY DEVELOPMENT
  • The cells of most animal embryos differentiate
    into three layers called germ layers
  • Endoderm (innermost) develops into the lining
    of the digestive tract and respiratory tract
  • Mesoderm (middle) muscle, circulatory,
    reproductive, and excretory systems
  • Ectoderm (outermost) sense organs, nerves,
    outer layer of skin

17
BODY SYMMETRY
  • Body Symmetry - the body plan of an animal, how
    its parts are arranged
  • Asymmetry - no pattern (corals, sponges)

18
BODY SYMMETRY
  • Body Symmetry - the body plan of an animal, how
    its parts are arranged
  • Radial Symmetry - shaped like a wheel (starfish,
    hydra, jellyfish)

19
BODY SYMMETRY
  • Body Symmetry - the body plan of an animal, how
    its parts are arranged
  • Bilateral Symmetry - has a right and left side
    (humans, insects, cats, etc)

20
CEPHALIZATION
  • Cephalization - an anterior concentration of
    sense organs (to have a head)
  • The more complex the animals becomes the more
    pronounced their cephalization

21
BODY PLAN
  • anterior - toward the head
  • posterior - toward the tail
  • dorsal - back side
  • ventral - belly side

22
SEGMENTATION
  • Segmentation - "advanced" animals have body
    segments and specialization of tissue (even
    humans are segmented, look at the ribs and spine)

23
BODY CAVITY
  • Body Cavity Formation A fluid-filled space where
    internal organs can be suspended

24
TYPES OF ANIMALS
  • Phylum Porifera
  • Typically asymmetrical
  • Lack tissues and organs
  • Adults are sessile
  • Mostly marine
  • Sexual and asexual reproduction
  • Example sponges
  • About 10,000 species

25
TYPES OF ANIMALS
  • Phylum Cnidaria
  • Radially symmetrical
  • Have distinct tissues
  • Marine and freshwater
  • Examples jellyfish, hydra, coral
  • About 10,000 species

26
TYPES OF ANIMALS
  • Phylum Ctenophora
  • Radially symmetrical
  • Transparent, gelatinous marine animals resembling
    jellyfishes
  • Propelled by cilia
  • Examples comb jellies
  • About 100 species

27
TYPES OF ANIMALS
  • Phylum Platyhelminthes
  • Bilaterally symmetrical
  • Acoelomates
  • Body flat and ribbon-like
  • Lack true segments
  • Organs present
  • Examples Planaria, Tapeworm, Schistosoma
  • More than 18,000 species

28
TYPES OF ANIMALS
  • Phylum Nematoda
  • Roundworms
  • Body slender and elongated
  • Pseudocoelomates
  • Oneway gut
  • Examples Ascaris, pinworms, hookworms,
    Trichinella, and Wuchereria
  • More than 80,000 species

29
TYPES OF ANIMALS
  • Phylum Rotifera
  • Small, transparent, wormlike or spherical animals
  • Bilaterally symmetrical
  • Pseudocoelomates
  • Almost all live in fresh water
  • Example rotifers
  • About 1,750 species

30
TYPES OF ANIMALS
  • Phylum Annelida
  • Bilaterally symmetrical
  • Serially segmented worms
  • Protostomes
  • Examples earthworms, leeches
  • About 15,000 species

31
TYPES OF ANIMALS
  • Phylum Mollusca
  • Soft-bodied animals
  • Coelomates
  • Protostomes
  • most have a radula
  • Terrestrial, freshwater, and marine
  • Examples clams, octopuses, snails
  • More than 110,000 species

32
TYPES OF ANIMALS
  • Phylum Arthropoda
  • Bilaterally symmetrical
  • Coelomates
  • Protostomes
  • Segmented bodies
  • Paired , jointed appendages
  • Chitinous exoskeleton
  • Aerial, terrestrial, and aquatic forms
  • Examples insects, spiders, crustaceans
  • About 1 million species

33
TYPES OF ANIMALS
  • Phylum Echinodermata
  • Adults are radially symmetrical
  • five-part body plan
  • Coleomates
  • Deuterostomes
  • Most forms have a water vascular system with tube
    feet for locomotion
  • Marine
  • Examples sea star, sand dollar, sea
    urchin
  • About 7,000 species

34
TYPES OF ANIMALS
  • Phylum Chordata
  • Bilaterally symmetrical
  • Deuterostomes
  • Coelomates
  • Have ?
  • A notochord (early backbone and spinal cord)
  • A dorsal nerve cord
  • Pharyngeal slits
  • A tail at some stage of life
  • Aquatic and terrestrial
  • Examples fishes, amphibians, reptiles, birds,
    mammals
  • More than 47,000 species

35
Phylum Chordata
FISHES
AMPHIBIANS
BIRDS
MAMMALS
REPTILES
About PowerShow.com