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The roots of orchids that allow the plant to grow on another plant develop what?
AA thick starchy cortex for storage
BA hardened cap for splitting the bark
CA spongy tissue that absorbs moisture
DA dense sheath of nitrogen fixing cells
Answer & Solution
Correct answer: C. A spongy tissue that absorbs moisture
1. Epiphytic roots let a plant grow on another plant.
2. In orchids these roots develop a spongy tissue that absorbs moisture.
3. That tissue is the adaptation being asked about, since an epiphyte has no soil to draw on.
4. Nitrogen fixing sheaths belong to root nodules of legumes, so that option imports a different adaptation.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 30 "Plant Form and Physiology", section 30.3 Roots_
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