| ⇦ | 
| ⇨ |
Earth originated approximately
Options
(a) 4,500 million years ago
(b) 3,600 million years ago
(c) between 1,600 – 2,600 million years ago
(d) 2.5 million years ago
Correct Answer:
4,500 million years ago
Explanation:
The earth is believed to be originated about 4,500 million years ago (in precambrian Era). Earlier earth’s surface was too hot (about 1000⁰ C). At this temperature life was not possible and water molecules existed in vapour form. It took a long time to cool down the earth. About 3500 million years ago the earth surface become cool enough to hold water and the large water bodies or first ocean came into existence. It marked the beginning of first life on the earth. Water is most essential factor for origin of life.
Related Questions: - ETC present in
- Sickle cell anaemia is:
- The type of epithelial cells,which line the inner surface of fallopian tube
- Energy transfers or transformations are never 100% efficient. This is due to
- Intermediate stage between aerobic and anaerobic cycles is
Topics: Evolution
(132)
Subject: Biology
(4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- ETC present in
- Sickle cell anaemia is:
- The type of epithelial cells,which line the inner surface of fallopian tube
- Energy transfers or transformations are never 100% efficient. This is due to
- Intermediate stage between aerobic and anaerobic cycles is
Topics: Evolution (132)
Subject: Biology (4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply