Chapter - Evolution - Questions and Answers
CBSE Class 12 - Biology
Q1: Who proposed Big Bang theory?
Answer: Abbe Lemaitre in 1931.
Q2: Who proposed Panspermia theory?
Answer: Richter in 1865.
Q3: What was Panspermia theory?
Answer: Panspermia theory stated that life came from outside in the form of spores.
Q4: Who put forward mutation theory?
Answer: Hugo De Vries in 1901.
Q5: Who poposed theory of natural selection?
Answer: Charles Darwin
Q6: Who wrote 'Origin of Life' ?
Answer: A. I. Oparin.
Q7: Name the scientist who disproved spontaneous generation theory?
Answer: Louis Pasteur disproved spontaneous generation (also called abiogenesis) theory and proved biogenesis.
Q8: What is palaentology?
Answer: It is the study of past life based on fossil records.
Q9: Who formulated the Recapitulation theory or Biogenetic Law?
Answer: Haeckel.
Q10: Who porposed the first theory of evolution, is also known as 'The inheritance of Acquired Characters in Organisms'?
Answer: Lamarck
Q11: Who developed the theory of genetic drift?
Answer: Sewal Wright.
Q12: What are missing links? Give an example.
Answer: Fossils that show combined features of two groups are termed missing links, e.g. Archaeopteryx.
Q13: What are connecting links? Give an example.
Answer: Living organisms possessing characters of two different groups of organisms are known as the connecting links.
Examples — Euglena: between plants and animals
Q14: State a reason for the increased population of dark coloured moths coinciding with the loss of lichens (on tree barks) during industrialisation period in England.
Answer: During industrialisation, SO₂ pollution from burning of coal killed Lichens exposing darker bark. White moths were selectively picked up by birds and black moths escaped unnoticed resulting in increase in their population.
Q15: According to De-Vries what is saltation?
Answer: Saltation means single step large mutation that causes species formation thus causing evolution.
☛See also:
The Living World (AIPMT 7 MCQs)
Kingdom Fungi (AIPMT MCQs)
Plant Nutrition MCQs (AIPMT/NEET)
Plants Of Special Interests (Pre-Medical)
Environmental Biology MCQs (AIPMT/NEET)
Genetics MCQs (AIPMPT/NEET)
Famous Indian Biologists
Animal Nutrition and Digestive System (AIPMT MCQs)
Human Nutrition (Worksheet)
Five Digestive Juices
List of Important Proteins
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