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Question
On the trunk of a 25-year-old tree, a marking was made 50 cm above the soil level. Assuming that the growth rate of the tree is 50 cm/ year, at how much distance above soil level will the marking be seen after 3 years?
On the trunk of a 25-year-old tree, a marking was made 50 cm above the soil level. Assuming that the growth rate of the tree is 50 cm/ year, at how much distance above soil level will the marking be seen after 3 years?
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Solution
The correct option is A 50 cm
The marking will remain where it was originally (at 50 cm from the soil level). This is due to the fact that the apical regions have meristematic tissue. The apical meristem is responsible for growth in length of a plant. The plant grows only at the extremities where these tissues are located. The areas such as the base of a trunk do not grow in height due to the absence of apical meristem. They show the presence of only lateral meristem. Due to the presence of lateral meristem, a plant can grow only in width and not in length.
The marking will remain where it was originally (at 50 cm from the soil level). This is due to the fact that the apical regions have meristematic tissue. The apical meristem is responsible for growth in length of a plant. The plant grows only at the extremities where these tissues are located. The areas such as the base of a trunk do not grow in height due to the absence of apical meristem. They show the presence of only lateral meristem. Due to the presence of lateral meristem, a plant can grow only in width and not in length.
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