Mammals nona emi yanko 10 5

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  • 1.Mammals Presentation Created By: Emi Buchinska Yanko HristovNona Stancheva

2. How can we recognize a mammal?

  • Produces milkfor its children (if the animal is female)
  • Has hair all even dolphins and whales because of their mustache
  • Lower jaw consists only of a single jaw
  • Has 3 bones in the ears stapes, incus, malleus(they were once a part of the jaw, but during evolution period became parts of the ears)
  • Has only one main artery that curves to the left side of the heart and becoming aortic arch
  • Has diaphragm (muscle+tendon that separates the body in 2 parts) [2]

3. What does the word mammal mean? (Word Origin)

  • Mammalia/mammalis (in Latin)
  • comes from the word mamma meaning mother [6]

4. Symmetry

  • 3 kinds of symmetries radial, asymmetrical&bilateral
  • Mammals bilateral -if we cut the animal in the middle of its body the 2 parts are going to be almost the same looking symmetrical body

5. Naming mammals!

  • Kingdom-Animalia
  • PhylumChordata
  • SubphylumVertebrata
  • Class -Mammalia
  • Subclass -Prototheria; Metatheria;Eutheria

6. Dolphins/Delphinus(by Yanko!)

  • Live in seas, oceans, rivers (in of the seas in the world)
  • Different food (mostly small fish) big dolphins need 10-15kg
  • Quickest 35km/h
  • Adult DolphinsReproductionBaby Dolphins
  • Interactions with humans [8]

7. Foxes/Fukh

  • Europe, Asia, North and South America
  • Mostly in the forests
  • Have some kind of a diet different food to function well
  • Almost invisible very quick!
  • 35-40 inches long
  • WinterMating Season; AutumnDispersal Season; SpringMoult and Birth Season; SummerArea Spreading [7]

8. Bats/Chiroptera

  • in all continents in the world (in the forests, also in caves)
  • Most eat insects
  • some eat mice and other animals with the size of a mouse
  • cant function properly during the daylight
  • Adult ( 1 year bat)Baby Bat ( Cant stand alone)Baby Bat (Can Stand)Teen Bat ( Can Fly)
  • Rabies disease able to cause heart attack, coming from bats [9]

9. Reproduction in mammals

  • - internal fertilization- embryo develops inside the mothers body
  • - smaller animals- shorter gestation, larger animals- longer gestation
  • - 3 phases of gestation:
  • 1) development of the embryo
  • 2) d evelopment of the fetus (the embryo in its later stages of development )
  • 3) birth of the fetus [1]

10. Obtaining and digestion of food

  • - herbivores- feed on plant materials
  • - cellulose- hard for digestion; mammals lack specialized enzymes
  • - digestion takes place with the help of microbes; cellulose is broken down in theinternal flora
  • - carnivores
  • - can go for several days without food
  • -omnivores [4] , [3]

11. Movement

  • - mammals are capable of walking big distances
  • - homeothermic body (warm blood)
  • - when running/walking, legs move back and forth beneath the body
  • - movement is possible because of tendons
  • - the back stores energy
  • - different types of movement (walking/running/flying/swimming/jumping/crawling, etc.) [3]

12. Vocabulary

  • Abundant Common , Rich, Have a lot of
  • Rabies A disease which can cause heart attacks
  • Herding Hunting by a whole group surrounding the victims
  • Moult change of feathers
  • Bilateral symmetrical
  • Asymmetrical opposite to bilateral
  • Radial in a round shape
  • Viviparous- giving birth to living offsprings
  • Gestation- pregnancy
  • Fetus-the embryo in its later stages of development , right before it is born
  • Homeothermic- having warm blood

13. Works Cited

  • "The Open Door Web Site : Biology : Reproduction in Mammals."The Open Door Web Site : Home Page . Web. 23 Mar. 2010. .
  • "Estonian Vertebrates - The General Characterization of Mammals."Loodusteadusliku Hariduse Keskuse . Web. 23 Mar. 2010. .
  • "Diet and Digestion in Mammals."The Earth Life Web . Web. 23 Mar. 2010. .
  • "Animal Digestion."KIDCYBER . Web. 23 Mar. 2010. .
  • "Locomotion in Mammals."The Earth Life Web . Web. 23 Mar. 2010. .
  • http://www.etymonline.com/
  • http://animaldiversity.ummz.umich.edu/site/accounts/pictures/Vulpes_vulpes.html
  • http://earthtrust.org/wlcurric/dolphins.html
  • http://www.bats4kids.org/
  • Biology textbook