NEET 2020 Botany Question 39 Solution
Question
Embryological support for evolution was disapproved by:
- (1)Karl Ernst von Baer
- (2)Alfred Wallace
- (3)Charles Darwin
- (4)Oparin
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Embryological support for evolution was disapproved by:
Ernst Haeckel proposed embryological support for evolution based on the observation that embryos resemble ancestral forms. Karl Ernst von Baer carefully observed that embryos NEVER pass through the adult stages of other animals, disproving Haeckel! Mark Option (1) in 5 seconds.
Ernst Haeckel proposed embryological support for evolution based on the observation of certain embryonic features common to all vertebrates (such as vestigial gill slits in early human embryos) that are absent in adults (Biogenetic law: Ontogeny recapitulates phylogeny).
This proposal was disapproved by Karl Ernst von Baer on the basis of careful comparative observation: he noted that embryos never pass through the adult stages of other animals.
Alfred Wallace worked in the Malay Archipelago and independently conceived natural selection; Charles Darwin authored On the Origin of Species; Alexander Oparin proposed the biochemical origin of life from coacervates.
Karl Ernst von Baer is the definitive scientist who disapproved the embryological hypothesis as stated in NCERT.
Diagnose every choice: Know exactly why the right option works and why distractors fail.
Factually exact; Karl Ernst von Baer definitively rejected Haeckel's biogenetic proposal.
Incorrect; Wallace was a co-discoverer of natural selection, not the embryologist who refuted Haeckel.
Incorrect; Darwin actually utilized embryological similarities as supporting evidence for common descent.
Incorrect; Oparin proposed the biochemical coacervate theory of the origin of life.
Haeckel PROPOSED embryological support; Karl Ernst von Baer DISAPPROVED it.
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