Kerala 10th std Biology Ch 2 Paths of Evolution Short Notes

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Below are short-answer type questions, including application-level questions, based on Chapter 2 of the Kerala 10th Standard Biology Textbook, "Paths of Evolution." Each question is designed to test understanding, recall, and application of concepts, with detailed answers for clarity. These questions cover key concepts, examples, and applications from the chapter, ensuring comprehensive preparation for examinations.

Questions like the following are included:

• What is the significance of superbugs in healthcare?
  

Answer: Superbugs are bacteria resistant to multiple antibiotics, making common treatments ineffective and posing a major challenge in treating infections.

• According to Lamarckism, how did giraffes develop longer necks?
  

Answer: Giraffes stretched their necks to reach higher leaves due to food scarcity, and this acquired trait was passed to offspring, leading to longer necks.

• Why was Lamarckism disproved?
  

Answer: Acquired characteristics do not alter an organism’s genetic structure and thus are not inherited, as confirmed by later genetic studies.

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