Casque refers to which head structure?

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Multiple Choice

Casque refers to which head structure?

Explanation:
A casque is a helmet-like projection on the head of certain birds. It’s a hard, often raised structure on top of the head (near the beak) seen in species like cassowaries and hornbills. This is why it refers to a head feature. Nests, perches, and roosts are all unrelated to head anatomy—they’re places: nests for eggs, perches to stand on, and roosts to rest at night. So the casque describes the helmet-like head structure, not those other concepts.

A casque is a helmet-like projection on the head of certain birds. It’s a hard, often raised structure on top of the head (near the beak) seen in species like cassowaries and hornbills. This is why it refers to a head feature. Nests, perches, and roosts are all unrelated to head anatomy—they’re places: nests for eggs, perches to stand on, and roosts to rest at night. So the casque describes the helmet-like head structure, not those other concepts.

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