Other modifications include the uneven thickening of guard cells, the sieve plates in phloem, the suberization of endodermal cells, the waterproof coverings of epidermal and cork cells.
Other modifications include the uneven thickening of guard cells, the sieve plates in phloem, the suberization of endodermal cells, the waterproof coverings of epidermal and cork cells.
此外还有其他的一些修饰形式，包括不均匀的加厚保卫细胞和韧皮部中的筛板，内皮细胞的栓化等。