Question

. Read the passage given below carefully and answer the questions that follow. (Ix5=5) It is now established that life existed in oceans at least 200 million years before oxygen appeared on Earth, as revealed by a new study. During this period in its history, known as Archaen, the Earth was covered by a poisonous smog of Methane, Ammonia and other toxic gases. So, life as we know it today, could not have survived on the early planet. Now, an international team, led by Rutgers University in New Jersey, has claimed that plant like bacteria existed in the oceans for hundreds of millions of years while the Earth’s air was not fit to breathe. The findings are based on analysis of preserved ancient seabed rocks from South Africa dating back some two to three billion years. The study found chemical evidence of nitrogen cycles which could have taken place without the presence of free oxygen, the Daily telegraph reported. Nitrogen cycles relate to the way living things obtain and use nitrogen to produce complex organic molecules. Evidence of nitrogen cycles provides a “finger print” of life. According to the scientists, organisms which produced oxygen as a by-product of photosynthesis must have evolved by around 205 billion years ago. Oxygen did not begin to enrich the atmosphere until at least 200 million years later. Read the questions below and write the option you consider the most appropriate in your answer sheet.



1) According to the report, which among the following statements are correct? i) Life was possible without oxygen in ocean. ii) Life could survive on the early planet. iii) In the early years, the earth was not covered by oxygen. iv) Planet like bacteria existed in the ocean and not on the Earth. * 1 point

a) (i) (ii) & (iii)
(b) (i) (iii) & (iv)
(c) (ii) & (iii)
(d) only (i)






it's very urgent ...!!​

Answer 1

Answer:

ur option is (c)

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