FORESTRY
GENERAL FORESTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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the main root has upturned so the seedling looks like the letter “J”
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has blue jays nesting in the roots
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has been planted at the correct depth
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has been planted in the J soil horizon
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Detailed explanation-1: -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-2: -The roots of a seed that is inserted upside down in the soil will grow downwards toward the Earth and the stem will grow upwards away from the Earth. Thus, the direction of growth of roots and stem does not change if a root is inserted upside down in the soil.
Detailed explanation-3: -From the beginning of germination display roots a tendency to grow downwards, while shoots grow upwards (anisotropic growth). A germinating seed can be turned upside down several times and the root will still start to bend downwards.