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Which of the following statements accurately describes the origin and evolution of life on Earth based on the provided text?
  • a)
    Life on Earth emerged with the first plants, about 3.8 billion years ago, which produced oxygen through photosynthesis.
  • b)
    Life began approximately 3.8 billion years ago, starting with blue algae, which evolved from chemical reactions.
  • c)
    The modern Big Bang Theory suggests that Earth was formed from the sudden explosion of life forms from blue algae.
  • d)
    Earth's initial atmosphere contained high levels of oxygen which supported the early development of complex life forms.
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Which of the following statements accurately describes the origin and ...
The correct answer is Option B. According to the text, life on Earth started around 3.8 billion years ago with blue algae, the earliest known life forms, which emerged from chemical reactions capable of replication. This aligns with the description that life evolved from chemical processes that produced molecules capable of forming living organisms. Options A, C, and D are incorrect because they either misstate the origin of life as plants or misinterpret the role of the Big Bang Theory and the composition of Earth's early atmosphere, which was initially devoid of oxygen until the advent of photosynthesis by life forms like blue algae.
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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.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. Life on _______ consists of a great variety of living organisms.

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Which of the following statements accurately describes the origin and evolution of life on Earth based on the provided text?a)Life on Earth emerged with the first plants, about 3.8 billion years ago, which produced oxygen through photosynthesis.b)Life began approximately 3.8 billion years ago, starting with blue algae, which evolved from chemical reactions.c)The modern Big Bang Theory suggests that Earth was formed from the sudden explosion of life forms from blue algae.d)Earths initial atmosphere contained high levels of oxygen which supported the early development of complex life forms.Correct answer is option 'B'. Can you explain this answer?
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Which of the following statements accurately describes the origin and evolution of life on Earth based on the provided text?a)Life on Earth emerged with the first plants, about 3.8 billion years ago, which produced oxygen through photosynthesis.b)Life began approximately 3.8 billion years ago, starting with blue algae, which evolved from chemical reactions.c)The modern Big Bang Theory suggests that Earth was formed from the sudden explosion of life forms from blue algae.d)Earths initial atmosphere contained high levels of oxygen which supported the early development of complex life forms.Correct answer is option 'B'. Can you explain this answer? for Humanities/Arts 2024 is part of Humanities/Arts preparation. The Question and answers have been prepared according to the Humanities/Arts exam syllabus. Information about Which of the following statements accurately describes the origin and evolution of life on Earth based on the provided text?a)Life on Earth emerged with the first plants, about 3.8 billion years ago, which produced oxygen through photosynthesis.b)Life began approximately 3.8 billion years ago, starting with blue algae, which evolved from chemical reactions.c)The modern Big Bang Theory suggests that Earth was formed from the sudden explosion of life forms from blue algae.d)Earths initial atmosphere contained high levels of oxygen which supported the early development of complex life forms.Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Humanities/Arts 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following statements accurately describes the origin and evolution of life on Earth based on the provided text?a)Life on Earth emerged with the first plants, about 3.8 billion years ago, which produced oxygen through photosynthesis.b)Life began approximately 3.8 billion years ago, starting with blue algae, which evolved from chemical reactions.c)The modern Big Bang Theory suggests that Earth was formed from the sudden explosion of life forms from blue algae.d)Earths initial atmosphere contained high levels of oxygen which supported the early development of complex life forms.Correct answer is option 'B'. Can you explain this answer?.
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