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Question
A _________ is a sub-aerial stem modification with a long internode.
A _________ is a sub-aerial stem modification with a long internode.
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Solution
The correct option is D Runner
A runner is a sub-aerial stem modification that arises from the base of the stem as a lateral branch and runs along the surface of the soil. It develops distinct nodes and long internodes and usually grows along the surface of the ground. A tuber is an underground stem modification for food storage. A phylloclade is a flattened stem of several internodes functioning as a leaf in some xerophytic plants. Many plants have a part called a petiole that attaches the leaf to the stem. On some plants, the petiole has changed because of environmental reasons so that it looks just like a leaf and is called a phyllode. Phyllodes are found on most species of acacia trees and shrubs.
Runner
A runner is a sub-aerial stem modification that arises from the base of the stem as a lateral branch and runs along the surface of the soil. It develops distinct nodes and long internodes and usually grows along the surface of the ground. A tuber is an underground stem modification for food storage. A phylloclade is a flattened stem of several internodes functioning as a leaf in some xerophytic plants. Many plants have a part called a petiole that attaches the leaf to the stem. On some plants, the petiole has changed because of environmental reasons so that it looks just like a leaf and is called a phyllode. Phyllodes are found on most species of acacia trees and shrubs.
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