The greatest evolutionary change enabling land vertebrates to be completely free from water was the development of

  • A
    Four legs
  • B
    Lungs
  • C
    Shelled eggs and internal fertilization
  • D
    Four chambered heart

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Similar Questions

Darwinian theory was unable to explain:

An evolutionary trend in which there is general degeneration and loss of organs is known as:

$A$ species that is produced by the loss or disappearance of a few characters found in its parents is termed as:

Neoteny is found in

Select the correct option for $X$ and $Y$ in the chart shown below.
[Chart Structure: Primitive Reptiles -> (Sauropsids,$X$); $X$ -> $Y$; $Y$ -> Therapsids]

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