Chapter 19: Origin and Evolution of Life — Online MCQ Test
SCIENCE · CLASS 10th · Tamil Nadu State Board
Practice Chapter 19: Origin and Evolution of Life with a free chapter-wise online MCQ test.
This chapter covers: This chapter traces theories of origin of life Lamarckism Darwinism modern synthetic theory and paleontology evidence. Students explore ethno-botany medicinal plants and evolutiona....
AI-generated questions from basic to board-exam level, with instant results and explanations.
Chapter 19: Origin and Evolution of Life — Important Questions & Answers
Who proposed the 'Theory of Inheritance of Acquired Characters'?
- A. Charles Darwin
- B. Jean Baptiste Lamarck
- C. Gregor Mendel
- D. Hugo de Vries
Answer: B. Jean Baptiste Lamarck
Lamarck proposed that organisms acquire traits during their lifetime and pass them to offspring.
Lamarck proposed that organisms acquire traits during their lifetime and pass them to offspring.
Which of the following is considered the 'Father of Evolution'?
- A. Charles Darwin
- B. August Weismann
- C. Lamarck
- D. Louis Pasteur
Answer: A. Charles Darwin
Charles Darwin is known for the Theory of Natural Selection.
Charles Darwin is known for the Theory of Natural Selection.
Which theory explains that species change over time through natural selection and survival of the fittest?
- A. Lamarckism
- B. Darwinism
- C. Mutation Theory
- D. Use and Disuse Theory
Answer: B. Darwinism
Darwinism emphasizes that favorable variations help organisms survive and reproduce.
Darwinism emphasizes that favorable variations help organisms survive and reproduce.
In the context of evolution, 'homologous structures' imply:
- A. Common ancestry
- B. Different origins but similar function
- C. No evolutionary relationship
- D. Identical environmental pressures only
Answer: A. Common ancestry
Homologous structures share a common structural plan due to shared ancestry, regardless of function.
Homologous structures share a common structural plan due to shared ancestry, regardless of function.
The Modern Synthetic Theory of evolution defines evolution as:
- A. Change in phenotype frequency in a population.
- B. Change in gene frequency in a population.
- C. The appearance of new species via spontaneous generation.
- D. The increase in complexity of an organism.
Answer: B. Change in gene frequency in a population.
Evolution is defined as the change in allele (gene) frequencies in a population over time.
Evolution is defined as the change in allele (gene) frequencies in a population over time.