PSEB 12th Class Biology For Origin of Life Multiple Choice Questions

Origin Of Life Questions Multiple Choice Question and Answers

Question 1. Protobiogenesis occurred:

1. 1.2 billion years ago
2. 2.0 billion years ago
3. 2.5 billion years ago
4. More than 3.5 billion years ago.

Answer: 4. More than 3.5 billion years ago.

Question 2. Possible early sources of energy were:

1. Chlorophyll
2. CO₂
3. UV radiations and lightning
4. Green plants

Answer: 3. UV radiations and lightning

PSEB 12th Class Biology Origin of Life Questions with Answers

Question 3. One of the greatest advocates of the theory of special creation was:

1. C. Darwin
2. Aristotle
3. Father Saurez
4. Huxley.

Answer: 3. Father Saurez

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Question 4. The theory of spontaneous generation was supported by:

1. Van Helmont
2. Redi
3. Spallanzani
4. Pasteur.

Answer: 1. Van Helmont

PSEB 12th Class Biology Origin of Life MCQs

Question 5. The most advanced theory of the origin of life is that of:

1. Catastrophic
2. Haldane and Oparin
3. Cosmozoic
4. Spontaneous.

Answer: 2. Haldane and Oparin

Question 6. First life on earth was:

1. Cyanobacteria
2. Chemoheterotrophs
3. Autotrophs
4. Photoautotrophs.

Answer: 2. Chemoheterotrophs

Question 7. There is no life on the moon because of the absence of:

1. Water
2. Oxygen
3. Hydrogen
4. Nitrogen.

Answer: 1. Water

Question 8. On the primitive earth, polymers such as proteins and nucleic acids in aqueous suspension formed the spherical aggregates, they are called:

1. Coacervates
2. Primitogens
3. Liposomes
4. Primitosomes.

Answer: 1. Coacervates

Question 9. Swan-necked flask experiment was done by:

1. Aristotle
2. Francisco Redi
3. Louis Pasteur
4. Robert Koch.

Answer: 3. Louis Pasteur

PSEB 12th Class Biology Origin of Life Questions with Answers

Question 10. The early atmosphere contained methane and other hydrocarbons. They have now been replaced by:

1. Nitrogen
2. Oxygen
3. Carbon dioxide
4. Hydrogen.

Answer: 3. Carbon dioxide

Question 11. Coacervates were experimentally produced by:

1. Urey and Miller
2. Oparin and Sydney Fox
3. Fisher and Huxley
4. Jacob and Monod.

Answer: 2. Oparin and Sydney Fox

Question 12. According to Oparin, which one of the following was not present in the primitive atmosphere of Earth?

1. Hydrogen
2. Water Vapour
3. Methane
4. Oxygen.

Answer: 4. Oxygen.

Origin of Life Multiple Choice Questions PSEB Class 12

Question 13. Which one of the following experiments suggests that the simplest living organisms could not have originated spontaneously from non-living matter?

1. Microbes did not appear in stored meat
2. Larvae could appear in decaying organic matter
3. Microbes appeared from unsterilized organic matter
4. The meat was not spoiled when heated and kept sealed in a vessel.

Answer: 4. Meat was not spoiled when heated and kept sealed in a vessel.

Question 14. One of the following plants has remained unchanged from the time of its origin:

1. Wheat
2. Ginkgo
3. Pea
4. Zea mays.

Answer: 2. Ginkgo

Question 15. The theory of special creation was supported by:

1. Van Helmont
2. Redi
3. Pasteur
4. Spallanzani.

Answer: 1. Van Helmont

Question 16. Oparin-Haldane theory of the origin of life states that:

1. Life originated as a result of physicochemical changes
2. Life originated from physical changes
3. Life originated by general changes
4. There is no origin of life.

Answer: 1. Life originated as a result of physicochemical changes

Question 17. Miller conducted his experiment in an apparatus containing methane, ammonia and hydrogen in the ratio of:

1. 5: 4: 1
2. 2 : 1: 2
3. 2:5:4
4. None of these.

Answer: 2. 2: 1: 2

Class 12 Biology Chapter Origin of Life

Question 18. Which one of the following amino acids was not found to be synthesized in Miller’s experiment?

1. Glycine
2. Aspartic acid
3. Glutamic acid
4. Alanine.

Answer: 3. Glutamic acid