Match Each Group of Organisms with Its Lineage

question 3

Multiple Choice

Match each group of organisms with its lineage. Each lineage will be used only once.
-sea urchins and sand dollars

• A)Petromyzontidae
• B)Amphibia
• C)Crinoidea
• D)Metatheria
• E)Chondrichthyes
• F)Actinopterygii
• G)Urochordata
• H)Aves
• I)Myxinoidea
• J)Holothuroidea
• K)Cephalochordata
• L)Eutheria
• M)Ophiuroidea
• N)Testudinata
• O)Squamata
• P)Asteroidea
• Q)Prototheria
• R)Echinoidea
• S)Hemichordata

---

Definitions:

Choroid

The middle layer of the eye, which contains the iris, the ciliary body, and most of the eye’s blood vessels.

Ciliary Body

A wedge-shaped thickening in the middle layer of the eyeball that contains the muscles that control the shape of the lens.

Sclera

The tough, outermost layer, or “white,” of the eye, through which light cannot pass; covers all except the front of the eye.

Sclera

The white outer layer of the eyeball, providing protection and structure to the eye.