Biology
Grade-9
Easy
Question
Which of the following is NOT true?
- The primitive broth was neutral and contained oxygen.
- Simple organic molecules aggregated to form new complex organic molecules due to polymerization reactions.
- The early atmosphere did not contain an ozone layer, and hence UV radiations reached the Earth’s surface directly
- The early atmosphere was abundant in hydrogen, carbon, nitrogen and sulfur.
Hint:
The primitive broth was neutral and contained oxygen
The correct answer is: The primitive broth was neutral and contained oxygen.
the seas and atmosphere as they existed on earth before the existence of life, consisting primarily of an oxygen free gaseous mixture containing chiefly water, hydrogen, methane, ammonia and carbon dioxide.
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