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NEET BIOLOGYEvolutionMedium

Question

Which one of the following sequences was proposed by Darwin and Wallace for organic evolution?

A

Overproduction, variations, constancy of population size, natural selection

B

Variations, constancy of population size, overproduction, natural selection

C

Overproduction, constancy of population size, variations, natural selection

D

Variations, natural selection, overproduction, constancy of population size

Step-by-Step Solution

Darwin and Wallace's theory of organic evolution via natural selection is built on several key observations. First, organisms have an innate potential to produce vast numbers of offspring (Overproduction) . However, in nature, resources are limited, and as a result, population sizes generally remain stable over time (Constancy of population size) . This leads to a struggle for existence. Within any population, individuals exhibit heritable differences (Variations) . Those individuals with variations that provide a survival advantage in their specific environment are more likely to reproduce and pass those traits to the next generation, a process termed Natural Selection .

Exam Context & Concepts Covered

This question aligns with the NEET BIOLOGY syllabus, specifically targeting concepts from Evolution. Mastering this topic is crucial for scoring well in the upcoming medical entrance examinations. Solving conceptually related problems will help you understand the nuances of these concepts and improve your problem-solving speed.

BIOLOGYEvolutionfollowingsequencesproposeddarwinwallace

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Given below are some stages of human evolution. Arrange them in the correct sequence (Past to Recent): A. Homo habilis B. Homo sapiens C. Homo neanderthalensis D. Homo erectus

A.A → D → C → B
B.D → A → C → B
C.A → C → D → B
D.D → C → A → B
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Which of the following is the correct sequence of events in the origin of life? I: Formation of protobionts. II: Synthesis of organic monomers. III: Synthesis of organic polymers. IV: Formation of DNA-based genetic systems.

A.I, II, III, IV
B.I, III, II, IV
C.II, III, I, IV
D.II, III, IV, I
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Among the human ancestors the brain size was more than 1000 cc in:

A.Homo neanderthalensis
B.Homo erectus
C.Ramapithecus
D.Homo habilis
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Forelimbs of cat, lizard used in walking; forelimbs of whale used in swimming and forelimbs of bats used in flying are an example of:

A.Analogous organs
B.Adaptive radiation
C.Homologous organs
D.Convergent evolution
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Select the correct match regarding adaptive radiation of Australian marsupials corresponding to placental mammals

A.Numbat - Flying Squirrel
B.Tasmanian Wolf - Bobcat
C.Marsupial mouse - Mole
D.Spotted Cuscus - Lemur
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Panspermia, an idea that is still a favorite for some astronomers, means:

A.Creation of life from dead and decaying matter
B.Creation of life from chemicals
C.Origin of sperm in human testes
D.Transfer of spores as a unit of life from other planets to Earth
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In Australia, marsupials and placental mammals have evolved to share many similar characteristics. This type of evolution may be referred to as:

A.Adaptive Radiation
B.Divergent Evolution
C.Cyclical Evolution
D.Convergent Evolution
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Sweet potato and potato represent a certain type of evolution. Select the correct combination of terms to explain the evolution.

A.Homology, convergent
B.Analogy, divergent
C.Analogy, convergent
D.Homology, divergent
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