alleryStart learning →Why does a germinating monocot end up with a fibrous root system?
AIts radicle splits into many equal branches
BIts coleorhiza divides to make several root tips
CIts primary root dies and adventitious roots emerge
DIts lateral roots grow out from the primary root
Answer & Solution
Correct answer: C. Its primary root dies and adventitious roots emerge
1. In a monocot seed the primary root emerges first, protected by the coleorhiza.
2. That primary root soon dies.
3. Other roots, the adventitious roots, then emerge from the base of the stem.
4. Those roots together give the monocot its fibrous root system.
5. In a dicot the story is different, since the radicle grows down into a tap root and lateral roots branch from it.
6. So branching of a surviving primary root describes the dicot pattern and is the trap here.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 32 "Plant Reproduction", section 32.2 Pollination and Fertilization_
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