M A M M A L S

M A M M A L S

1. Mammals are eukaryotic, multicellular organisms

   • They have organs and systems to carry out their vital functions

2. NUTRITION

   • Mammals have heterotrophic organisims,they can be herbivores, carnivores or omnivores.
   • FEEDING
     • Take food from other living organisms that contains nutriens
   • DIGESTION
     • They have a digestive system
       • 1 The animal grinds the food mechanically and chemically, thus separating the nutrients
       • 2 The nutrients are absorbed and taken to the cells
       • 3. Food remain are expelled
   • The type is digestive tracts
   • RESPIRATION
     • They have lungs
   • CIRCULATION
     • They have closed circulatory systen
   • EXRETION
     • The organs that carry our this funtion are the excretory system

3. INTERACTION

   • They have well-developed organsof locomotion and muscles ayatems
   • Animals have cephalisation
     • Is that they have a nervous system and sense organs normally in the head

4. REPRODUCTION

   • Mammals reproduce sexually, they develop within the body of the mother
     • They are viviparous

5. Mammals are vertebrates

   • They have bilateral symmetry, vertebral column and a internal skeleton made of bone or cartilage

6. The 3 types of mammals are monotremes, marsupials,placentals

   • MONOTREMES
     • Lay eggs with shells
   • MARSUPIALS
     • They give birth to their young at avery early stage of development
   • PLACENTALS
     • The young are connected to the mother by an organ called Placenta and they botn fully developed

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