Question

Help me understand Evolution of Human in short? Please? It's newly added to our syllabus and I haven't read it yet. Your help will be appreciated. Thank you

Answer 1

Thanks for your question !

♦ Evolution :

          Evolution is the gradual change occuring in living organisms over a long duration. This os a very slow going process through which development of organisms is achieved. It is an everlasting process of changes. The proofs to support this process are of following types -

1] Morphological Evidences.

    Similarities in the external and visible features are known as morphological evidences.  These similar characters amd features indicate that origin of different animal and plant groups must be having a common ancestor.

2] Anatomical Evidences.

    Human hand, cat's forleg, flipper of whale and patagium of bat show differences in their features. Besides, these organs have different uses too. However, the bones structure and bony joints in them show similarities.

♦ Human Evolution :

         Human Evolution all referred belong to specific stages and time periods. Around 2 crore years ago some species of apes started evolving in different directions.

        ♠Nine Stages of human evolution and its time -

1. Ancient human like Lemur - 7,00,00000 years ago.

2. Egyptopithecus - 4,00,00000 years ago.

3. Dryopithecus - 2,50,00000 years ago.

4. Ramapithecus - 1,00,00000 years ago.

5. Australopithecus - 40,00000 years ago.

6. Skilled Human - 20,00000 years ago.

7. Man with erect posture - 15,00000 years ago.

8. Neanderthal - 1,50000 years ago.

9. Cro-magnom man - 50000 years ago.

       ♠ On entire earth, same as they all evolved, and how they did extinct ?

      Human like animals evolved. And rise of genus homo. Ape became larger and more intelligent. Some things happened like - Invention of agriculture, rearing of cattle, establishing cities and civilizations, development of culture (Approximately, 10,000 years ago).

      Invention of art of writing and beginning of historical periods. Emergence of Modern science and Rise of industrial society (Approximately, 200-5000 years ago).

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Answer 2

Evolution is the process of formation of complex beings from simpler forms by gradual modifications .

Two scientist put across their views which were : lamarkism and dwarnism .

There had put up several theories as to why did evolution occur.

Then we have several species that had evolved before the current one that is homo sapiens. There were some distinguished morphism , structure and attributes of each species . For this you need to go through well :) .