Consider statements about evolution: 1. The theory of use and disuse was given by Lamarck. 2. The theory of natural selection was given by Darwin. 3. The theory of mutation was given by Hugo de Vries. Which are correct? MCQ with Answer and Explanation
Consider statements about evolution: 1. The theory of use and disuse was given by Lamarck. 2. The theory of natural selection was given by Darwin. 3. The theory of mutation was given by Hugo de Vries. Which are correct?
A. 2 and 3 only
B. 1 and 3 only
C. 1 and 2 only
D. 1, 2 and 3
Answer: Option D
Solution (By JKSSB Mock Tests)
Jean-Baptiste Lamarck proposed the theory of inheritance of acquired characters, based on the use and disuse of organs. Charles Darwin proposed the theory of evolution by natural selection, emphasizing survival of the fittest. Hugo de Vries, a Dutch botanist, proposed the mutation theory of evolution after working on evening primrose, stating that evolution occurs via sudden, large mutations (saltations). All statements are correct.
Explanation:
Chloroplasts contain chlorophyll and thylakoids, where light reactions occur, and stroma for the Calvin cycle. They convert light energy to chemical energy.
Explanation:
Variant CJD is a fatal prion disease linked to consumption of beef from cattle with bovine spongiform encephalopathy (mad cow disease). Prions are misfolded proteins that induce other proteins to misfold. Not viral, bacterial, or fungal.
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