Difference between Protophloem and Metaphloem | Plants

The upcoming discussion will update you about the differences between Protophloem and Metaphloem. Difference # Protophloem: 1. It is the first formed phloem when the plant organ is growing. 2. Protophloem is comparatively less prominent. 3. It is made up of smaller and narrower elements. 4. Sieve areas or pores are not prominent. 5. Companion cells are often absent. 6. [...]