Female spotted sandpipers aggressively court males and, after mating, leave the clutch of young for the male to incubate. This sequence may be repeated several times with different males until no available males remain, forcing the female to incubate her last clutch. Which of the following terms best describes this behavior?

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#Question id: 8863

#XL - T Zoology

Which class of the phylum Cnidaria includes ʺjelliesʺ with rounded (as opposed to boxlike) medusae? 

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#Question id: 8864

#XL - T Zoology

Corals are most closely related to which group?

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#Question id: 8864

#XL - R Botany

Corals are most closely related to which group?

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#Question id: 8886

#XL - T Zoology

Which characteristic is shared by both cnidarians and flatworms?

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#Question id: 8887

#XL - T Zoology

Generally, members of which flatworm class(es) are nonparasitic?

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#Question id: 8888

#XL - R Botany

In a small stream, you pick up a rock and observe many small, flattened worms crawling on its undersurface. You decide that they belong to the phylum Platyhelminthes. To which class do they probably belong?