Evolution MCQs

With respect to Louis Pasteur's experiments, consider these statements:

I. He demonstrated that life comes only from pre-existing life.
II. He showed that in pre-sterilised flasks, life arose from killed yeast even when kept sealed.
III. In another flask open to the air, new living organisms arose from killed yeast.

Select the correct statements:

Analyze Oparin and Haldane's hypothesis about the chemical origin of life:

I. They proposed that the first form of life could have come from pre-existing non-living organic molecules.
II. They proposed that the formation of life was preceded by chemical evolution.
III. Haldane was from Russia and Oparin was from England.

Which statements are correct?

Consider the experimental setup of S.L. Miller in 1953:

I. Miller used a mixture of CH₄, H₂, NH₃, and water vapour in his electric discharge experiment.
II. The temperature maintained inside the closed flask was 800°C.
III. He directly observed the formation of simple nucleic acid chains and polysaccharides.

Select the correct statements:

Read these statements regarding the origin of the first non-cellular and cellular life forms:

I. The first non-cellular forms of life could have originated 3 billion years back.
II. They would have been giant molecules like RNA, protein, and polysaccharides.
III. The first cellular forms of life did not originate till about 2000 million years ago.
IV. The first cellular life forms probably originated in terrestrial dry habitats.

Which of the statements are correct?

Review Charles Darwin's findings during his voyage:

I. Darwin sailed on a ship called H.M.S. Beagle round the world.
II. He concluded that existing living forms share similarities to varying degrees only among themselves.
III. He noted that extinctions of different life forms have occurred in the past, just as new forms arose at different times.

Which of the statements are correct?

Consider the following statements regarding evolutionary theories:

I. Fitness, according to Darwin, refers ultimately and only to reproductive fitness.
II. Alfred Wallace was a naturalist who worked in the Malay Archipelago.
III. Wallace arrived at entirely different conclusions from Darwin regarding evolution.

Which statements are correct?

Regarding paleontological evidence, analyze the statements below:

I. Rocks form sediments, and a cross-section of the Earth's crust indicates the arrangement of sediments over time.
II. Different-aged rock sediments contain fossils of different life forms.
III. Certain life forms are restricted to certain geological time spans.
IV. Radioactive dating is used to calculate the age of fossils.

Choose the correct option:

Concerning the genetic basis of natural selection, analyze these statements:

I. Adaptive ability is inherited and has a genetic basis.
II. Fitness is the end result of the ability to adapt and get selected by nature.
III. The rate of appearance of new forms is completely independent of the life cycle or life span of organisms.

Select the correct statements:

Darwin's formulation of natural selection was influenced by the work of Thomas Malthus:

I. The work of Thomas Malthus on populations influenced Darwin.
II. Malthus observed that populations grow exponentially if unchecked, while resources are limited.
III. In reality, population sizes remain completely unstable with massive non-seasonal fluctuations.

Which statements are correct?

Consider these fundamental definitions in evolutionary biology:

I. When we describe the story of the world, we describe evolution as a process.
II. When we describe the story of life on Earth, we treat evolution as a consequence of natural selection.
III. Branching descent and natural selection are the two key concepts of Darwinian theory.

Which of the statements are correct?