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First photosynthetic organisms to appear...

First photosynthetic organisms to appear on earth were

A

Chemoheterophs

B

Chemoautotrophs

C

Photoautotrophs

D

Decomposers

Text Solution

Verified by Experts

The correct Answer is:
A
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The first organisms appeared on earth were

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Knowledge Check

  • Assertion: The earliest organisms that appeared on the earth were non-green and presumably anaerobes. Reason: The first autotrophic organisms were the chemoautotrophs that never released oxygen.

    A
    If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion
    B
    If both Assertion and Reason are true and the Reason is not the correct explanation of the Assertion.
    C
    If Assertion is true but the Reason is false.
    D
    If both Assertion and Reason are false.

  • Following are the two statements regarding the origin of life I. The earliest organisms that appeared on the earth were nongreen and presumably anaerobes. II. The first autotrophic organisms were the chemoautotrophs that never released oxygen. Of the above statements which one of the following options is correct?

    A
    Both I and II are correct.
    B
    Both I and II are false.
    C
    I is correct but II is false.
    D
    II is correct but I is false

    • Similar Questions

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    Following are the two statements regarding the origin of life (a) the earliest organisms that appeared on the earth were nongreen and presumably anaerobic The first autotrophic organisms were the chemoautotrophs that never released oxygen. Of the above statements which one of following options is correct

    Following are the two statements regarding the origin of life (a) the earliest organisms that appeared on the earth were nongreen and presumably anaerobic The first autotrophic organisms were the chemoautotrophs that never released oxygen. Of the above statements which one of following options is correct

    Following are the two statements regarding the origin of life : A. " " The earliest organisms that appeared on the earth were non-green and presumably anaerobes. B. " " The first autotrophic organisms were the chemoautotrophs that never relesed oxygen. Of the above statements which one of the following options is correct ?

    Following are the statements regarding the origin of life (A) The earliest organisms that appeared on the earth were non-green and presumably anaerobes (B) The first autotrophic organisms were the chemoautotrophs that never released oxygen. Of the above statements which one of the following options is correct

    A: The first photosynthetic organisms which show oxygenic photosynthesis were cyanobacteria. R: Photosynthesis by Eubacteria is Anoxygenic.

    First photosynthetic bacteria might have appeared around

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