Evolution
CBSE · Class 12 · Biology
Flashcards for Evolution — CBSE Class 12 Biology. Quick Q&A cards covering key concepts, definitions, and formulas.
What is the Big Bang theory and how does it relate to the origin of the universe?
Answer
The Big Bang theory explains the origin of the universe through a singular huge explosion about 20 billion years ago. The universe expanded, temperature decreased, and hydrogen and helium formed. Gase
What is the Big Bang theory and how does it relate to the origin of the universe?
Answer
The Big Bang theory explains the origin of the universe through a singular huge explosion about 20 billion years ago. The universe expanded, temperature decreased, and hydrogen and helium formed. Gase
Define chemical evolution and explain the Oparin-Haldane hypothesis.
Answer
Chemical evolution refers to the formation of organic molecules from inorganic constituents before the origin of life. Oparin and Haldane proposed that the first life forms arose from pre-existing non
Define chemical evolution and explain the Oparin-Haldane hypothesis.
Answer
Chemical evolution refers to the formation of organic molecules from inorganic constituents before the origin of life. Oparin and Haldane proposed that the first life forms arose from pre-existing non
Describe Miller-Urey experiment and its significance in understanding origin of life.
Answer
In 1953, S.L. Miller created conditions similar to early Earth in a laboratory flask containing CH₄, H₂, NH₃, and water vapor at 800°C with electric discharge. He observed formation of amino acids. Th
Describe Miller-Urey experiment and its significance in understanding origin of life.
Answer
In 1953, S.L. Miller created conditions similar to early Earth in a laboratory flask containing CH₄, H₂, NH₃, and water vapor at 800°C with electric discharge. He observed formation of amino acids. Th
What is the theory of spontaneous generation and how was it disproved?
Answer
Spontaneous generation theory claimed that life came from decaying matter like straw and mud. Louis Pasteur disproved it through careful experimentation showing that in pre-sterilized flasks, life did
What is the theory of spontaneous generation and how was it disproved?
Answer
Spontaneous generation theory claimed that life came from decaying matter like straw and mud. Louis Pasteur disproved it through careful experimentation showing that in pre-sterilized flasks, life did
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What are the important topics in Evolution for CBSE Class 12 Biology?
Evolution covers several key topics that are frequently asked in CBSE Class 12 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Evolution — CBSE Class 12 Biology?
Start by understanding all key concepts. Practise previous year questions from this chapter. Revise formulas and definitions regularly. Use flashcards for quick revision before the exam.
How many flashcards are available for Evolution?
There are 50 flashcards for Evolution covering key definitions, formulas, and concepts. Use them daily for 10–15 minutes for best results.
Sources & Official References
- NCERT Official — ncert.nic.in
- CBSE Academic — cbseacademic.nic.in
- CBSE Official — cbse.gov.in
- National Education Policy 2020 — education.gov.in
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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