Class Asteroidea

question 6

Multiple Choice

Class Asteroidea

• A)have pentaradial symmetry.
• B)feeds on clams.
• C)feeds on other echinoderms.
• D)all of the above

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Definitions:

Secondary Ossification

The phase of bone development that occurs after birth, where bone tissue is formed in the epiphyses of long bones, leading to growth in length.

Medullary Cavity

A central cavity of bone shafts where red and/or yellow marrow is stored.

Compact Bone

Type of bone that contains osteons consisting of concentric layers of matrix and osteocytes in lacunae.

Spongy Bone

A type of bone tissue that has a porous structure, found at the ends of long bones and within the interior of vertebrae, facilitating the movement of nutrients and waste.