A modified stem gives plants a chance to grow and thrive in different environments. There are four types of modified stems. One is the bulb, two is the stolon, three is the tuber, and four is the rhizome(which we will be talking about later). An example of a modified stem through the rhizome is ferns. Why you may ask? Because the rhizome is the only stem of the fern plant that produces koru to protect it. Koru protects the plant by tightly wrapping around the plant or by protecting it with its hairs.
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