SCIENCE
BOTANY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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True
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False
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Either A or B
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None of the above
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Detailed explanation-1: -Extreme shortening of the internodes results in rosette plants, such as lettuce (Lactuca sativa; Asteraceae), in which the leaves develop but the internodes between them do not elongate until the plant “bolts” when flowering.
Detailed explanation-2: -Schwann cell populations stabilize after the onset of myelination; from then on the geometry of each internode is determined by its passive elongation. The timing of myelination is critical for determining the ultimate length of the Schwann cell.
Detailed explanation-3: -The length of the internode vary among the plant species. The length of the internode in a normal plant, vary with age, but are same, at the time of flowering. When the plant is in good soil, with adequate nutrient and water, the internodes are almost shorter.
Detailed explanation-4: -Based on several lines of evidence, including the rapid growth response during gravitropism and phototropism, auxin is also a major factor controlling internode elongation (Cleland, 2010).