Organism Adaptations 2011. Timeline of Major Events 4.5BYA to 544MYA 1)First life on earth = single...
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Transcript of Organism Adaptations 2011. Timeline of Major Events 4.5BYA to 544MYA 1)First life on earth = single...
Organism Adaptations
2011
Timeline of Major Events4.5BYA to 544MYA
1) First life on earth = single celled organisms2) First plantlike organisms, oxygen = algae3) First many-celled organisms = sponges4) Soft-shelled, no backbone, marine animals
common5) First eyes and digestive tracts thanks to
worms6) Jellyfish give us first nerve and muscles
Timeline of Major Events544 to 410MYA
Arthropods-exoskeletons-segmented body parts-jointed appendages
Early Land Plants-reproduced with spores-had strong stalks to hold them up out of water-thicker “skin” to stop from drying out
Adaptations (410 to 286 MYA)
What adaptations did you notice…
AmphibiansBackbonesTeethSkincan take in oxygenFreshwaterEggsLegsEyelids and eardrums
PlantsConesPollenSeeds (don’t need water to reproduce)Needles (help retain moisture)Fish
BackboneGillsTeethEggsOne-way traffic guts
Adaptations (286 to 65MYA)
Reptiles-scales and watertight skin-watertight eggs-backbones-body temp that depends on the environment
Flowering Plants- petals- color- seeds and pollen- Broad leaves
Adaptations (65mys to 2011)Birds
-regulate own body temp-feathers
-watertight, hard-shelled eggs-backbone
-hollow bones-beaks
-complex
Mammals-regulate own body temp
-have hair-most give birth to live young
-backbone-complex