Ben Is Participating in a Sleep Study in the Laboratory

question 25

Short Answer

Ben is participating in a sleep study in the laboratory.The EEG shows relatively rapid,low-amplitude brain waves.Ben is in stage_____ sleep.

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Definitions:

Gnetophyta

A division of gymnosperms comprising woody plants with some angiosperm-like features, including the genera Ephedra, Gnetum, and Welwitschia.

Gametophyte

The haploid phase in the life cycle of plants and algae that produces gametes for sexual reproduction.

Pollen Grain

The immature male gametophyte of seed plants (gymnosperms and angiosperms) that produces sperm capable of fertilization.

Microsporocytes

Cells in plants that undergo meiosis to produce microspores, which eventually develop into male gametophytes or pollen grains.