enrichment day! we are starting our new unit today – animals get out a sheet of paper ready for...
TRANSCRIPT
ENRICHMENT DAY!
We are starting our new unit today – ANIMALS
Get out a sheet of paper ready for warm-up!
WARM-UP3-19-2015
List all the body systems you can think of.
List any of the organs you can that make up each of the systems you listed above.
Do any of these systems work together? If so, which ones?
INTRO TO THE ANIMAL KINGDOM
What is an Animal?
Characteristics of All Animals
1. Animals are Multicellular
2. Animals are Eukaryotic
3. Animals are Heterotrophs
Evolutionary/Developmental Milestones in Animals
1. Cell specialization and levels of
organization
2. Development of body symmetry and
segmentation
3. Development of an internal body cavity
and tissue layers
Cell SpecializationCells throughout a multicellular organism can
develop in different ways to perform different tasks.
Levels of Organization
Body Symmetry
Radial Symmetry:A body plan in which all body parts of an organism are arranged around a central point
Bilateral Symmetry:a single plane divides the body into two mirror images
Asymmetry:cannot be divided into mirror images
Symmetry in biology is the balanced distribution of duplicate body parts or shapes. The body plans of most multicellular organisms exhibit some form of symmetry…
Body Segmentation
Segmentation of the body allows development of various specialized limbs, such as antennae, pincers, walking legs, claws, wings, etc.
Cephalization is the concentration of nervous tissues in one location which eventually produces a head region with sensory organs and a brain.
Tissue Layers & Body Cavity
A body cavity, called a coelom, increases the efficiency of food intake and waste removal.
Tissue Layer Develops Into
Endoderm digestion and respiration structures
Mesoderm muscles, bones, blood, skin, reproductive organs
Ectoderm skin, brain, nervous system
The Animal Kingdom is divided into two main groups…
Invertebrates & Vertebrates
Porifera
Invertebrates
Over 95% of all animal species are invertebrates
There are 8 major phyla of invertebrates from the simplest to the most complex…
InvertebratesPORIFERA (Sponges) CNIDARIAN
Sea Anemone Jellyfish
PLATYHELMINTHES (Flatworms)
NEMATODA(Round Worms)
Planaria Tapeworm Pinworm Hookworm
InvertebratesANNELIDA MOLLUSCA
Earthworm Leech Squid, Snails, Clams, etc.
ARTHROPODA ECHINODERMATA
Crustaceans Spiders Insects Starfish Sea Cucumber Sand Dollar
ANIMAL BODY SYSTEMSBody systems are all interrelated and work together to perform their functions in animals. Body systems can be organized and studies by these functions:
REGULATION: Excretory & Nervous Systems
NUTRIENT ABSORPTION: Respiration, Digestion, & Circulatory Systems
DEFENSE: Immune, Integumentary, Lymphatic, Skeletal, & Muscular Systems
REPRODUCTION: Reproductive & Endocrine Systems
Pg. 814 - Pg. 820