PLANTS
ROOTS
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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taproot and lateral root
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taproot and fibrous root
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fibrous root and adventitious root
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lateral root and adventitious root
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Detailed explanation-1: -There are two types of root systems: taproots and fibrous roots (also known as adventitious roots; Figure 2.1. 2). Tap roots have a prominent primary root that develops when the seed germinates and the radicle emerges. From there, secondary or lateral roots grow.
Detailed explanation-2: -Taproots and fibrous roots are the two main types of root systems. In a taproot system, a main root grows vertically downward with a few lateral roots. Fibrous root systems arise at the base of the stem, where a cluster of roots forms a dense network that is shallower than a taproot.
Detailed explanation-3: -Upon germination, the first structure to emerge from most seeds is the root from the embryonic radicle. This primary root is a taproot. In plants in which the taproot persists, smaller lateral roots (secondary roots) commonly arise from the taproot and may in turn produce even smaller lateral roots (tertiary roots).
Detailed explanation-4: -The primary root, or radicle, is the first organ to appear when a seed germinates. It grows downward into the soil, anchoring the seedling. In gymnosperms and dicotyledons (angiosperms with two seed leaves), the radicle becomes a taproot.
Detailed explanation-5: -A tap root system has a main root that grows down vertically, and from which many smaller lateral roots arise. Dandelions are a good example; their tap roots usually break off when trying to pull these weeds, and they can regrow another shoot from the remaining root). A tap root system penetrates deep into the soil.