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Kingdom Animalia How Are They Different From Everything Else We Have Studied?

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Presentation on theme: "Kingdom Animalia How Are They Different From Everything Else We Have Studied?"— Presentation transcript:

1 Kingdom Animalia How Are They Different From Everything Else We Have Studied?

2 Review of Other Kingdoms Monera »(Bacteria) Protista »(Catch-all) Fungi Plantae

3 Monera Prokaryotic cells Unicellular organisms Some cell walls

4 Protista Eukaryotic cells Mix of unicellular and multicellular organisms Some cell walls

5 Fungi Eukaryotic cells Most multicellular, but some unicellular organisms Cell wall (made of chitin)

6 Plantae Eukaryotic cells Multicellular organisms Cell wall (made of cellulose)

7 How does Kingdom Animalia compare to the others?

8 Animalia Eukaryotic cells Multicellular organisms No cell walls

9 Animalia–Informal Groups Vertebrates Vertebrates –Have a backbone –5% of all animals Invertebrates Invertebrates –No backbone –95% of all animals

10 Essential functions What do animals do to survive? There are 7 functions they must perform to stay alive.

11 FEEDING Must bring in food (and water) to provide energy for life. Examples: Herbivores=> plants Carnivores=> animals Omnivores=> animals and plants Detritovores=> decomposer Filter-feeders=> filter water Parasites=> live off of a host

12 Respiration Must exchange gases between body and the environment –O 2 brought in, CO 2 removed Performed via… simple diffusion => complex systems

13 Circulation Transport of food, wastes, and gases (O 2, CO 2 ) Performed via… –simple diffusion => complex systems

14 Excretion Removal of cellular wastes –Primary waste is ammonia (poisonous) Must eliminate immediately or convert into something less toxic (like urea) Performed via… –simple diffusion => complex systems

15 Response Respond to the environment with nerve cells –Other organisms respond, but none with nerve cells

16 Movement Just like it sounds (and voluntary) Usually have muscle or muscle-like tissue Attached to a single spot => fully motile

17 Reproduction Passing on of genetic material Most animals use sexual reproduction with haploid gametes Some are asexual

18 Trends in Animal Evolution There are five ways that animals change as they go from simple to complex

19 1. Cell Specialization & Levels of Organization As the cells of an organism get more specialized… …the more complex the organism becomes.

20 2. Early Embryonic Development

21 3. Body Symmetry – 2 main types Radial Radial –Infinite number of planes –Tend to be sessile or drifting –Usually a cylinder body shape Bilateral Bilateral –Divide the body into 2 halves –Have a left/right and usually a front/back –Allow for segmentation Same genes control segmentation and appendages in insects and humans

22 4. Cephalization Concentration of sense organs & nerves at the anterior end of the body The more complex the animal… –…More cephalization If different enough => qualifies as a head –This is good and positive Allows for walking/flying movements

23 5. Body Cavity Formation Def: fluid-filled space between the digestive tract and the body wall Important because… a)Can suspend internal organs (for safety) b)Allows for specialized regions


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