The kingdom animalia unifying characteristics and major divisions
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The Kingdom Animalia : Unifying Characteristics and Major Divisions PowerPoint PPT Presentation


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The Kingdom Animalia : Unifying Characteristics and Major Divisions. I edited this power point from Eric Kessler . Unifying Characteristics. Multicellular Can generate movement Haploid Gametes Diploid Somatic Cells Embryonic Development Mitochondrial Eukaryotes Heterotrophic

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The Kingdom Animalia : Unifying Characteristics and Major Divisions

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The Kingdom Animalia:Unifying Characteristics and Major Divisions

I edited this power point from Eric Kessler


Unifying Characteristics

  • Multicellular

  • Can generate movement

  • Haploid Gametes

  • Diploid Somatic Cells

  • Embryonic Development

  • Mitochondrial Eukaryotes

  • Heterotrophic

  • Aerobic Respiring


Haploid Gametes

  • In animals the adults produce haploid (having half the number of chromosomes) gametes through meiosis


Diploid Somatic Cells

  • As the zygote develops the resulting body or somatic cells are diploid


The Embryonic Blastula

  • After fertilization of an egg by sperm, the resulting diploid (having two pairs of chromosomes) zygote rapidly goes through mitosis

  • All animals become a hollow sphere of cells called a blastula


Gastrulation & The Gut

  • After the blastula stage, in some animals cells migrate to the interior forming the primitive gut

  • In Protostomes the initial pore forms the mouth, while in the Deuterostomes this pore forms the anus


Mitochondrial Eukaryotes

  • Cells contain Mitochondria inside that carry on Cellular Respiration

  • O2 + Glucose CO2 + H2O + ATP


Heterotrophic and Aerobic Respiring

  • In order to acquire the Glucose necessary for cellular respiration animals must be consumers and eat organisms already containing glucose

  • In order to acquire the Oxygen gas necessary for cellular respiration animals must have mechanisms of obtaining oxygen


The Body Planes


Types of symmetry

Photo. http://images.tutorvista.com/content/animal-kingdom/animal-symmetry-types.jpeg accessed 8/21/2012 11:32 EST.


Spherical Symmetry


Radial Symmetry

  • Body plan in which the body parts are arranged regularly around a central axis (multiple planes cut into mirror halves)


Bilateral Symmetry

  • Body plan in which body parts are arranged into a left and right around a central plane (one plane cuts into mirror images)

  • Cephalization results from this plan


Cephalization

  • This describes the collection of neural cells into one common location to form a brain or ganglion.

  • Usually in bilateral animals.

  • Is associated with a mouth since mouths require so much information processing.

Left: brain of child with Microcephaly

Right normal child’s brain size

Cephalopod head

foot


Segmentation

  • Segmented organisms have a repeating series of body units that may or may not be similar to one another


Major Divisions

  • Symmetry, Movement, & Cephalization

  • Gastrulation & Gut Formation

  • Dermal Tissues & Coelome Development

  • Segmentation


Coelome Development:Acoelomate

  • The coelome is a fluid filled cavity surrounded by mesodermal tissue

  • Acoelomate animals lack a fluid filled cavity and are Triploblastic


Pseudocoelomate

  • Pseudocoelomate animals have a fluid filled cavity but it is not contained within mesoderm tissue. Instead it lies between the mesoderm and endoderm

  • Pseudocoelomates are Triploblastic (having an Ectoderm, Endoderm, and Mesoderm)


Eucoelomate

  • Eucoelomate animals have a true fluid filled cavity contained with in the mesoderm

  • Eucoelomates are also Triploblastic


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