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Which of the following turfgrasses have rolled vernation, a distinguishable midrib, and a somewhat long ligule?

a) Kentucky bluegrass
b) Bermudagrass
c) Annual bluegrass
d) Creeping bentgrass

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Final answer:

Creeping bentgrass (d) is the turfgrass with rolled vernation, a distinguishable midrib, and a somewhat long ligule.

Step-by-step explanation:

Among the given options, the turfgrass that has rolled vernation, a distinguishable midrib, and a somewhat long ligule is Creeping bentgrass (d).

Creeping bentgrass has rolled vernation, which means the leaves are folded inward along the midrib. It also has a distinguishable midrib that can be seen running down the center of the leaf. Additionally, it has a somewhat long ligule, which is a small, membrane-like structure where the leaf meets the stem.

Kentucky bluegrass (a), Bermudagrass (b), and Annual bluegrass (c) do not exhibit all these characteristics.

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