[Campbell Biology P.767] According to the provided diagram "What are some key characteristic... | Practice Question

According to the provided diagram "What are some key characteristics that have appeared during vertebrate evolution?", which of the following derived characteristics is explicitly identified as "a key development in colonization of land"?

  • A: Jaws and a mineralized (bony) skeleton.
  • B: Skull and backbone composed of vertebrae.
  • C: Amniotic egg.
  • D: Limbs with digits.

Explanation

The diagram directly links 'Limbs with digits' to 'a key development in colonization of land', describing them as having 'evolved from lobed fins'.