NEET Exam > NEET Questions > Choose the incorrect statement.a)The UV rays...
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Choose the incorrect statement.
- a)The UV rays from sun broke up water into hydrogen and oxygen before origin of life
- b)O2 combined with CH4 to form water for origin of life on land
- c)Ozone layer was formed before land plants and animals
- d)O2 combined with ammonia and methane to form water, CO2 and others in primitive atmosphere
Correct answer is option 'B'. Can you explain this answer?
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Most Upvoted Answer
Choose the incorrect statement.a)The UV rays from sun broke up water ...
Incorrect Statement: O2 combined with CH4 to form water for origin of life on land.
Explanation:
The correct statement: O2 combined with ammonia and methane to form water, CO2 and others in the primitive atmosphere.
- The origin of life on Earth is believed to have occurred around 3.5 to 4 billion years ago. During this time, the Earth's atmosphere was very different from what it is today.
- The early atmosphere was composed primarily of nitrogen, methane, ammonia, and water vapor. There was no free oxygen (O2) present.
- The UV rays from the sun broke up water molecules into hydrogen and oxygen. The hydrogen escaped into space due to its low mass, while oxygen accumulated in the atmosphere.
- Over time, oxygen combined with ammonia and methane to form water, carbon dioxide (CO2), and other compounds in the primitive atmosphere. This process is known as chemical evolution.
- The formation of the ozone layer occurred later, after the accumulation of oxygen in the atmosphere. The ozone layer is formed when oxygen molecules (O2) are broken apart by UV radiation and recombine to form ozone (O3). This ozone layer acts as a shield, protecting life on Earth from harmful UV radiation.
- Land plants and animals evolved much later, after the formation of the ozone layer. They were able to colonize land because the ozone layer provided protection from the damaging effects of UV radiation.
- The statement that O2 combined with CH4 (methane) to form water for the origin of life on land is incorrect. Methane is a greenhouse gas that is produced by certain microorganisms and can be found in the atmosphere. However, the formation of water in the primitive atmosphere did not involve the direct combination of oxygen and methane.
- Therefore, option B is the incorrect statement.
In conclusion, the correct statement is that O2 combined with ammonia and methane to form water, CO2, and other compounds in the primitive atmosphere. The formation of the ozone layer occurred later, after the accumulation of oxygen in the atmosphere, and before the evolution of land plants and animals.
Explanation:
The correct statement: O2 combined with ammonia and methane to form water, CO2 and others in the primitive atmosphere.
- The origin of life on Earth is believed to have occurred around 3.5 to 4 billion years ago. During this time, the Earth's atmosphere was very different from what it is today.
- The early atmosphere was composed primarily of nitrogen, methane, ammonia, and water vapor. There was no free oxygen (O2) present.
- The UV rays from the sun broke up water molecules into hydrogen and oxygen. The hydrogen escaped into space due to its low mass, while oxygen accumulated in the atmosphere.
- Over time, oxygen combined with ammonia and methane to form water, carbon dioxide (CO2), and other compounds in the primitive atmosphere. This process is known as chemical evolution.
- The formation of the ozone layer occurred later, after the accumulation of oxygen in the atmosphere. The ozone layer is formed when oxygen molecules (O2) are broken apart by UV radiation and recombine to form ozone (O3). This ozone layer acts as a shield, protecting life on Earth from harmful UV radiation.
- Land plants and animals evolved much later, after the formation of the ozone layer. They were able to colonize land because the ozone layer provided protection from the damaging effects of UV radiation.
- The statement that O2 combined with CH4 (methane) to form water for the origin of life on land is incorrect. Methane is a greenhouse gas that is produced by certain microorganisms and can be found in the atmosphere. However, the formation of water in the primitive atmosphere did not involve the direct combination of oxygen and methane.
- Therefore, option B is the incorrect statement.
In conclusion, the correct statement is that O2 combined with ammonia and methane to form water, CO2, and other compounds in the primitive atmosphere. The formation of the ozone layer occurred later, after the accumulation of oxygen in the atmosphere, and before the evolution of land plants and animals.
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Community Answer
Choose the incorrect statement.a)The UV rays from sun broke up water ...
The UV rays from sun broke up water into H2 and O2 and the lighter H2 escaped. So, water is not formed by combination of H2 and O,.
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Choose the incorrect statement.a)The UV rays from sun broke up water into hydrogen and oxygen before origin of lifeb)O2 combined with CH4 to form water for origin of life on landc)Ozone layer was formed before land plants and animalsd)O2 combined with ammonia and methane to form water, CO2 and others in primitive atmosphereCorrect answer is option 'B'. Can you explain this answer?
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Choose the incorrect statement.a)The UV rays from sun broke up water into hydrogen and oxygen before origin of lifeb)O2 combined with CH4 to form water for origin of life on landc)Ozone layer was formed before land plants and animalsd)O2 combined with ammonia and methane to form water, CO2 and others in primitive atmosphereCorrect answer is option 'B'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Choose the incorrect statement.a)The UV rays from sun broke up water into hydrogen and oxygen before origin of lifeb)O2 combined with CH4 to form water for origin of life on landc)Ozone layer was formed before land plants and animalsd)O2 combined with ammonia and methane to form water, CO2 and others in primitive atmosphereCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Choose the incorrect statement.a)The UV rays from sun broke up water into hydrogen and oxygen before origin of lifeb)O2 combined with CH4 to form water for origin of life on landc)Ozone layer was formed before land plants and animalsd)O2 combined with ammonia and methane to form water, CO2 and others in primitive atmosphereCorrect answer is option 'B'. Can you explain this answer?.
Choose the incorrect statement.a)The UV rays from sun broke up water into hydrogen and oxygen before origin of lifeb)O2 combined with CH4 to form water for origin of life on landc)Ozone layer was formed before land plants and animalsd)O2 combined with ammonia and methane to form water, CO2 and others in primitive atmosphereCorrect answer is option 'B'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Choose the incorrect statement.a)The UV rays from sun broke up water into hydrogen and oxygen before origin of lifeb)O2 combined with CH4 to form water for origin of life on landc)Ozone layer was formed before land plants and animalsd)O2 combined with ammonia and methane to form water, CO2 and others in primitive atmosphereCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Choose the incorrect statement.a)The UV rays from sun broke up water into hydrogen and oxygen before origin of lifeb)O2 combined with CH4 to form water for origin of life on landc)Ozone layer was formed before land plants and animalsd)O2 combined with ammonia and methane to form water, CO2 and others in primitive atmosphereCorrect answer is option 'B'. Can you explain this answer?.
Solutions for Choose the incorrect statement.a)The UV rays from sun broke up water into hydrogen and oxygen before origin of lifeb)O2 combined with CH4 to form water for origin of life on landc)Ozone layer was formed before land plants and animalsd)O2 combined with ammonia and methane to form water, CO2 and others in primitive atmosphereCorrect answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for NEET.
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Choose the incorrect statement.a)The UV rays from sun broke up water into hydrogen and oxygen before origin of lifeb)O2 combined with CH4 to form water for origin of life on landc)Ozone layer was formed before land plants and animalsd)O2 combined with ammonia and methane to form water, CO2 and others in primitive atmosphereCorrect answer is option 'B'. Can you explain this answer?, a detailed solution for Choose the incorrect statement.a)The UV rays from sun broke up water into hydrogen and oxygen before origin of lifeb)O2 combined with CH4 to form water for origin of life on landc)Ozone layer was formed before land plants and animalsd)O2 combined with ammonia and methane to form water, CO2 and others in primitive atmosphereCorrect answer is option 'B'. Can you explain this answer? has been provided alongside types of Choose the incorrect statement.a)The UV rays from sun broke up water into hydrogen and oxygen before origin of lifeb)O2 combined with CH4 to form water for origin of life on landc)Ozone layer was formed before land plants and animalsd)O2 combined with ammonia and methane to form water, CO2 and others in primitive atmosphereCorrect answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Choose the incorrect statement.a)The UV rays from sun broke up water into hydrogen and oxygen before origin of lifeb)O2 combined with CH4 to form water for origin of life on landc)Ozone layer was formed before land plants and animalsd)O2 combined with ammonia and methane to form water, CO2 and others in primitive atmosphereCorrect answer is option 'B'. Can you explain this answer? tests, examples and also practice NEET tests.
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