Question:
The stem modified into leaf like structure is known as
The stem modified into leaf like structure is known as
Updated On: Aug 1, 2022
- phylloclade
- tuber
- stolon
- sucker
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The Correct Option is A
Solution and Explanation
Phylloclades are flattened or cylindrical modification of stem of unlimited growth which have taken over the function of photosynthesis. Formation of phylloclades help the plant to grow in dry habitats because transpiration is little from the stem. In some cases phylloclades store water, mucilage and latex, eg., Opuntia.
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Concepts Used:
Stem - Nodes and Internodes
Underground Modification
In some plants, stems are modified to form underground structures that store food. Some examples of the underground stem are as follows:
Rhizome: They are non-green, fleshy structures that resemble roots in appearance. The presence of nodes and internodes distinguishes them from roots. When a rhizome grows horizontally, it is called Straggling Rhizome. This type of rhizome is seen in turmeric, ginger, etc. If a rhizome grows in an oblique direction, it is called RootStock Rhizome. This is found in bananas and alocasia.
Therefore it has nodes and internodes. Ginger is a stem and not a root because it has nodes and internodes. It is a rhizome, an underground modification of the stem.