alleryStart learning →Which description fits an adventitious root?
AA root arising from a part other than the radicle
BA root arising directly from the embryo radicle
CA root that stores starch in a swollen taproot
DA root that fuses with the stem of a host plant
Answer & Solution
Correct answer: A. A root arising from a part other than the radicle
1. Most roots trace back to the radicle of the plant embryo, which forms the root system at germination.
2. An adventitious root is an aboveground root that arises from a plant part other than that radicle.
3. It emerges above the ground from the shoot, which is what makes it unusual.
4. The option describing growth from the radicle names the ordinary root and is the trap here.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 30 "Plant Form and Physiology", section 30.3 Roots_
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