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Humanities/Arts Exam  >  Humanities/Arts Questions  >  Which one of the following is not related to ... Start Learning for Free
Which one of the following is not related to the formation or modification of the present atmosphere?

  • a)
    Solar winds

  • b)
    Differentiation

  • c)
    Degassing

  • d)
    Photosynthesis

Correct answer is option 'B'. Can you explain this answer?
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Verified Answer
Which one of the following is not related to the formation or modifica...
- Statement i is correct as it accurately describes the singularity as the starting point of the universe.
- Statement ii is partially correct; while the Big Bang explosion did occur 13.7 billion years ago, it did not result in the immediate formation of all existing matter. Matter began forming later as the universe expanded.
- Statement iii is correct; within three minutes after the explosion, conditions allowed for the formation of the first atomic nuclei.
- Statement iv is also correct; the universe became transparent around 300,000 years post-Big Bang when electrons combined with protons to form neutral hydrogen, allowing light to travel freely.
Thus, the statements that are correct are i, iii, and iv, making Option B the right choice.
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Most Upvoted Answer
Which one of the following is not related to the formation or modifica...
Understanding Earth's Atmosphere Formation
The Earth's atmosphere has evolved through various processes, but not all processes are directly related to its current formation or modification.
Key Processes Related to Atmosphere Formation
- Solar Winds:
Solar winds can strip away the atmosphere of celestial bodies. In the early Earth, solar winds played a significant role in shaping the atmosphere by removing lighter gases.
- Degassing:
This process involves the release of gases from the Earth’s interior, primarily through volcanic eruptions. It contributed significantly to the formation of the primordial atmosphere, introducing gases like carbon dioxide, water vapor, and nitrogen.
- Photosynthesis:
The emergence of photosynthetic organisms transformed the atmosphere by producing oxygen. This process was crucial for developing the current atmosphere, making it conducive to life.
Why Differentiation is Not Related
- Differentiation:
This geological process refers to the separation of materials within the Earth based on density. While it played a role in forming the Earth's structure (like the core and mantle), it does not directly affect the atmosphere's composition or its evolution.
Conclusion
In summary, while solar winds, degassing, and photosynthesis are integral to the atmosphere's formation and modification, differentiation pertains more to the Earth's internal structure than to atmospheric development. Thus, option 'B' is the correct answer as it is not related to the formation or modification of the present atmosphere.
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Direction: Read the case study given below and answer any three of the questions that follow.The sun is the basic source of energy on which all life depends. This energy initiates life processes in the biosphere through photosynthesis, the main source of food and energy for green plants. During photosynthesis, carbon dioxide is converted into organic compounds and oxygen. Out of the total solar insolation that reaches the earth’s surface, only a very small fraction (0.1 per cent) is fixed in photosynthesis. More than half is used for plant respiration and the remaining part is temporarily stored or is shifted to other portions of the plant.Life on earth consists of a great variety of living organisms. These living organisms exist and survive in a diversity of associations. Such survival involves the presence of systemic flows such as flows of energy, water and nutrients. These flows show variations in different parts of the world, in different seasons of the year and under varying local circumstances. Studies have shown that for the last one billion years, the atmosphere and hydrosphere have been composed of approximately the same balance of chemical components. This balance of the chemical elements is maintained by a cyclic passage through the tissues of plants and animals. The cycle starts by absorbing the chemical elements by the organism and is returned to the air, water and soil through decomposition. These cycles are largely energised by solar insolation. These cyclic movements of chemical elements of the biosphere between the organism and the environment are referred to as bio geochemical cycles. Bio refers to living organisms and geo to rocks, soil, air and water of the earth.Q. ________ energy initiates life processes in the biosphere through photosynthesis, the main source of food and energy for green plants.

Direction: Read the case study given below and answer any three of the questions that follow.Nitrogen is a major constituent of the atmosphere comprising about seventy-eight per cent of the atmospheric gases. It is also an essential constituent of different organic compounds such as the amino acids, nucleics acids, proteins, vitamins and pigments. Only a few types of organisms like certain species of soil bacteria and blue green algae are capable of utilising it directly in its gaseous form. Generally, nitrogen is usable only after it is fixed. Ninety per cent of fixed nitrogen is biological. The principal source of free nitrogen is the action of soil micro-organisms and associated plant roots on atmospheric nitrogen found in pore spaces of the soil. Nitrogen cycle be fixed in the atmosphere by lightning and cosmic radiation. In the oceans, some marine animals can fix it. After atmospheric nitrogen has been fixed into an available form, green plants can assimilate it. Herbivorous animals feeding on plants, in turn, consume some of it. Dead plants and animals, excretion of nitrogenous wastes are converted into nitrites by the action of bacteria present in the soil. Some bacteria can even convert nitrites into nitrates that can be used again by green plants. There are still other types of bacteria capable of converting nitrates into free nitrogen, a process known as denitrification.Q. How much percentage of fixed nitrogen is biological?

Direction: Read the case study given below and answer any three of the questions that follow.Nitrogen is a major constituent of the atmosphere comprising about seventy-eight per cent of the atmospheric gases. It is also an essential constituent of different organic compounds such as the amino acids, nucleics acids, proteins, vitamins and pigments. Only a few types of organisms like certain species of soil bacteria and blue green algae are capable of utilising it directly in its gaseous form. Generally, nitrogen is usable only after it is fixed. Ninety per cent of fixed nitrogen is biological. The principal source of free nitrogen is the action of soil micro-organisms and associated plant roots on atmospheric nitrogen found in pore spaces of the soil. Nitrogen cycle be fixed in the atmosphere by lightning and cosmic radiation. In the oceans, some marine animals can fix it. After atmospheric nitrogen has been fixed into an available form, green plants can assimilate it. Herbivorous animals feeding on plants, in turn, consume some of it. Dead plants and animals, excretion of nitrogenous wastes are converted into nitrites by the action of bacteria present in the soil. Some bacteria can even convert nitrites into nitrates that can be used again by green plants. There are still other types of bacteria capable of converting nitrates into free nitrogen, a process known as denitrification.Q. Generally, nitrogen is usable only after it is _________.

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Which one of the following is not related to the formation or modification of the present atmosphere?a)Solar windsb)Differentiationc)Degassingd)PhotosynthesisCorrect answer is option 'B'. Can you explain this answer?
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