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6.Evolution
normal
Which one of the following statements is correct ?
A
There is no evidence of the existence of gills during embryogenesis of mammals.
B
All plant and animal cells are totipotent.
C
Ontogeny repeats phylogeny.
D
Stem cells are specialized cells.
(AIPMT-2007)
Solution
(c) : Haeckel $(1810)$ proposed that developing animal embryo passes through stages resembling adult forms of its ancestors. Earnst Haeckel $(1868, 1874)$ formulated biogenetic law or racapitulation theory which states that ontogeny (developmental history of an individual) repeats phylogeny (development history of races).
Standard 12
Biology
