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Following are the two statements regardi...

Following are the two statements regarding the origin life
(a) The earliest organisms that appeared on the earth were non green and presumably anaerobes.
(b) The first autotrophic organisms were the chemoautotrophic that never released oxygen.Of the above Statements which one of the following options is correct?

A

(b) is correct but (a) is false

B

Both (a) and (b) are correct

C

Both (a) and (b) are false

D

(a) is correctly but (b) is false

Text Solution

Verified by Experts

The correct Answer is:
B
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JMD PUBLICATION-EVOLUTION-EXERCISE
  1. Which one is reptilian ancestor of birds?

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  2. Which of the following structures is homologous to the wing of a bird?

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  3. Following are the two statements regarding the origin life (a) The e...

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  4. Analogous structures are a result of

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  5. Genetic drift operates in

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  6. In Hardy-Weinberg equation, the frequency of heterozygous individual i...

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  7. The chronological order of human evolution from early to the recent is

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  8. Which of the following is the correct sequence of events in the origin...

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  9. The correct sequence of stages in the evolution of modern man is

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  10. Documented microfossils have been found that are as old as

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  11. Which evidence does not favour Lamarckian concept of inheritance of a...

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  12. Among the following sets of examples for divergent evolution, select t...

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  13. The similarity of bone structure in the forelimbs of many vertebrates ...

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  14. According to Hugo de Vries the mechanism of evolution is

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  15. Radioactive C - dating and living fossils are used for

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  16. Which of the following explained evolution in most acceptable form?

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  17. Select the option having correct sequence of geological periods — Perm...

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  18. What was the reason of mass extinction during Mesozoic era?

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  19. What is mature graafian follicle ?

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  20. In a species the weight of newborn ranges from 2 to 5 kg. 97% of the n...

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