Question

according to the cladogram, which organisms are in the smallest clade with birds?
sharks ray-finned fish amphibians primates rodents and rabbits crocodiles birds
hair eggs with shell
amniotic egg
four limbs
bony skeleton
vertebrae
\bigcirc crocodiles
\bigcirc primates
\bigcirc rodents and rabbits
\bigcirc sharks

Explanation:

A clade is a group of organisms that includes an ancestor and all its descendants. To find the smallest clade with birds, we look at the cladogram. Birds and crocodiles share a more recent common ancestor (as seen by the shared derived characteristics like amniotic egg, eggs with shell, etc., closer to them) compared to other options. Primates, rodents and rabbits, and sharks are more distantly related to birds in the cladogram. So the smallest clade with birds includes crocodiles.

Answer:

A. crocodiles