_____ Are Cells That Lay the Framework for New Phloem

question 68

Short Answer

_____ are cells that lay the framework for new phloem and xylem in vascular plants. Prior to the differentiation of these cells, their precursors transported auxin out of immature leaves.

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Definitions:

Genital Arousal

Physiological reactions of the genital organs in response to sexual stimulation, leading to increased blood flow and erection or lubrication.

Suprachiasmatic Nucleus

A part of the brain located in the hypothalamus that regulates circadian rhythms.

Circadian Rhythm

A natural, internal process that regulates the sleep-wake cycle and repeats roughly every 24 hours, affecting physical, mental, and behavioral changes in living organisms.

Pineal Gland

A small, pine-cone-shaped endocrine gland in the brain that produces and secretes the hormone melatonin, which regulates sleep patterns.