Question

Mason drew the cladogram shown.



Which statements best describe the cladogram? Select three options.

Reptiles are the most primitive.
Birds and reptiles are most closely related.
Frogs are more closely related to fish than birds.
Frogs are more closely related to birds than fish.
Fish are the most primitive.

Answer 1

Selected (true):
- Birds and reptiles are most closely related.
- Frogs are more closely related to birds than fish.
- Fish are the most primitive.

Reason: the cladogram shows fish branching off first (basal/most primitive), then frogs, and reptiles and birds as sister taxa — so reptiles and birds share the most recent common ancestor, and frogs share a more recent ancestor with birds/reptiles than with fish.