1. The age of the earth is about:
Answer: B. 4.5 billion years
Biology Class 11 Unit 14: Evolution MCQs
98 multiple choice questions with the correct answer for each. Tap an option to check yourself, or switch on "Show all answers". This is page 1 of 2.
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2. The oldest known fossils are about:
Answer: B. 3.7 billion years old
3. The word evolution means:
Answer: C. change over a period of time
4. The earliest photosynthetic autotrophs used which compound as a source of hydrogen?
Answer: B. Hydrogen sulfide
5. Oxygen-evolving photosynthesis began with organisms similar to:
Answer: B. cyanobacteria
6. For more than a billion years the world was ruled by:
Answer: B. prokaryotes
7. The endosymbiosis theory was proposed by:
Answer: C. Lynn Margulis
8. According to endosymbiosis, mitochondria evolved from:
Answer: B. an aerobic bacterium engulfed by a large anaerobic prokaryote
9. Chloroplasts are thought to be derived from:
Answer: B. photosynthetic bacteria ingested by an early eukaryote
10. Flagella may have been derived from ingestion of prokaryotes similar to:
Answer: B. spirochetes
11. Which feature supports the endosymbiont origin of mitochondria and chloroplasts?
Answer: C. They have their own DNA and bacteria-like ribosomes
12. Mitochondria and chloroplasts are similar to bacteria in:
Answer: B. size and having their own DNA and 70S ribosomes
13. The first life forms on earth were:
Answer: B. heterotrophs
14. The first theory of evolution was put forward by:
Answer: B. J. B. Lamarck
15. Lamarck presented his ideas in 1809 in the book:
Answer: B. Philosophie Zoologique
16. Lamarck's mechanism was based on:
Answer: B. use and disuse of organs and inheritance of acquired characters
17. According to Lamarck, organs which are used more become:
Answer: B. stronger and more developed
18. Lamarck explained the loss of legs in snakes by:
Answer: B. disuse of legs due to creeping habit
19. Webbed feet of aquatic birds are explained by Lamarck as due to:
Answer: B. constant spreading of toes to swim
20. Characters acquired in a lifetime and passed to offspring are called:
Answer: B. acquired characters
21. Lamarck explained the long neck of giraffe by:
Answer: B. stretching of necks over many generations by short necked ancestors
22. A drawback of Lamarckism is that:
Answer: B. somatic changes are not heritable
23. Acquired traits are non-genetic and:
Answer: B. cannot be inherited
24. Charles Darwin was born in:
Answer: B. England
25. Darwin sailed as a naturalist in 1831 on the ship:
Answer: B. HMS Beagle
26. Darwin was ... years old when he joined the voyage:
Answer: C. 22
27. The Beagle spent almost two months at the:
Answer: B. Galapagos Islands
28. The Galapagos Islands are about how far west of Ecuador?
Answer: B. 965 km
29. In the Galapagos, Darwin collected how many types of finches?
Answer: C. 14
30. Darwin's finches differed mainly in:
Answer: B. beak size and shape according to their food
31. The Galapagos organisms resembled those of:
Answer: C. South American mainland
32. Darwin's observations about distribution of species among islands suggested:
Answer: B. new species arise by gradual accumulation of adaptations in separated habitats
33. Darwin wrote a 35-page sketch of his theory in:
Answer: C. 1842
34. The book Principles of Geology was written by:
Answer: B. Charles Lyell
35. The theory of uniformitarianism was proposed by:
Answer: B. James Hutton
36. Lyell's work suggested that the earth is:
Answer: B. much older than generally believed
37. Malthus wrote:
Answer: C. An Essay on the Principle of Population
38. Malthus noted that human population increases:
Answer: B. exponentially (1, 2, 4, 8, 16)
39. Malthus noted that food supply increases:
Answer: B. arithmetically (1, 2, 3, 4, 5)
40. Malthus's idea led Darwin to the concept of:
Answer: B. struggle for existence
41. The naturalist who independently proposed natural selection in 1858 was:
Answer: C. Alfred Russel Wallace
42. Wallace was travelling in:
Answer: C. the Malay Archipelago
43. The papers of Darwin and Wallace were presented to the:
Answer: B. Linnaean Society of London on July 1, 1858
44. The Origin of Species was published in:
Answer: D. 1859
45. Darwin's Descent of Man was published about:
Answer: B. twelve years later
46. Darwin's two main points in the Origin of Species are:
Answer: B. descent with modification, and natural selection and adaptation
47. In Darwin's view the history of life is like a:
Answer: C. branching tree
48. Natural selection refers to:
Answer: B. differential reproductive capacity among individuals of a population
49. The four observations of Darwin's mechanism are:
Answer: B. overproduction, variations, struggle for existence, survival of the fittest
50. Overproduction means:
Answer: B. each species produces more offspring than will survive to maturity
About Biology Class 11 Unit 14 MCQs (Federal Board)
These 98 Biology MCQs cover Class 11 Unit 14: Evolution of the Federal Board (FBISE) HSSC-I (1st Year / Class 11) syllabus. They are SLO-based MCQs as per the new pattern for FBISE exams. Each question has four options and the correct answer is shown, so you can practise for the annual examination and find the topics you still need to revise. The questions are split over 2 pages of 50. Use the Print button to save this chapter as a PDF.