Figure 10-5
the structures labeled b in figure 10–5 are called the

a. centromere.
b. centriole.
c. sister chromatids.
d. spindle.

C. sister chommatids

Explanation:

During interphase of a cell cycle, replication of chromosome takes place, in which a single chromosome is replicated into two identical copies of that chromosome.  The identical copies of a single chromes are called sister chromatids. The sister chromatids are united together with a centromere. Replication of chromosomes ensure that daughter cells get identical chromosomes after cell division.  Thus, in the given qustion labeled B are sister chomatids.

what's the question?

kelp are large brown algae that live in cool, relatively shallow waters close to the shore. they grow in dense groupings much like a forest on land. these underwater towers of kelp provide food and shelter for thousands of fish, invertebrates, and marine mammal species.

e) all of the above