What is phellogen?...

What is phellogen?

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### Step-by-Step Solution: 1. **Definition of Phellogen**: Phellogen, also known as cork cambium, is a type of meristematic tissue in plants. 2. **Function of Phellogen**: It is responsible for the formation of the periderm, which is the protective covering of stems, roots, and shoots in plants. 3. **Structure of Phellogen**: - The phellogen layer has two sides: ...

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