Wednesday, June 24, 2020

Evidences of evolution with help of key words

Chapter - 1.3

Evidences of evolution with help of key words

Learn all the above evidences with help of key words.

1)Morphological evidences:-

> Structure of mouth

>Position of eyes

>Structure of nostrils

>Ear pinnae

>Hair on body

>Leaf  shape

>Leaf Venation

>Leaf petiole









2)Anatomical Evidences:-

>Similarity in human hands

>Cats foreleg

>Flipper whale

>Patagium of bat

 










3) Vestigial Organ:-

>Understand useless organs of organisms

>Development  of tissues

>Appendix

>Ruminant

>Tailbone (coccyx)

>Wisdom teeth

>Body hair


4) Paleontological Evidences :-

>Organism get buried due  to disaster

>Like flood, earthquake,volcano.etc

>Remnants and impressions

>Fossils

 

















5)Connecting  links :-

>Morphological characters

>Peripatus is a connecting link between annelida  and arthropoda

>Reptiles lay eggs

>Mammals are evolved from reptiles and amphibians from fishes


6) Embryological Evidences:-

  Embryo show extreme similarities during initial stages and those similarities decreases gradually


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