Question

What distinguishes the frill spikes of Ceratopsids, like Styracosaurus, from other structures?

a. They are made of bone
b. They lack keratin sheathing
c. They are found on the tail
d. They are covered in keratin

Which subfamily of Ceratopsids is known for having long spikes or prongs on the frill?
a. Triceratopsinae
b. Centrosaurinae
c. Protoceratopsinae
d. Chasmosaurinae

What is the role of keratin in the context of Ceratopsid frill spikes?
a. Provides a hard bony structure
b. Serves as a protective covering
c. Enhances sensory perception
d. Stimulates growth

Among the mentioned Ceratopsids, which one is known for its frill spikes?
a. Protoceratops
b. Styracosaurus
c. Triceratops
d. Pachycephalosaurus

What modern-day species share a similar keratin structure with Ceratopsid frill spikes?
a. Canids
b. Bovids
c. Felids
d. Ursids

Can the frill spikes of Ceratopsids be considered horns?
a. Yes, as they are made of bone
b. No, as they lack keratin
c. Yes, as they are sheathed in keratin
d. No, as they are unrelated to horn structures

Answer 1

Frill spikes of Ceratopsids like Styracosaurus are made of bone, covered in keratin, which serves as a protective layer, and are comparable to the horns of modern-day Bovids.

Step-by-step explanation:

What distinguishes the frill spikes of Ceratopsids, like Styracosaurus, from other structures is that they are made of bone. As for the subfamily of Ceratopsids known for having long spikes or prongs on the frill, it is the Centrosaurinae. The role of keratin in the context of Ceratopsid frill spikes serves as a protective covering. Among the mentioned Ceratopsids, Styracosaurus is known for its distinctive frill spikes. The modern-day species that share a similar keratin structure with Ceratopsid frill spikes are Bovids, like cows and goats. The frill spikes of Ceratopsids can be considered horns because they are sheathed in keratin.