Sentence Examples

  • In many cases externai protophloem, usually consisting of narrow sieve-tubes often with swollen walls, can be distinguished from metaphloem.
  • The protoxylem and protophloem are developed a few cells from the inner and outer margins respectively of the desmogen strand, the desmogenic tissue left over giving rise to the segments of endocycle and pericycle capping the bundle.
  • Xylem and protophloem alone are differentiated) being very much shorter than in the stem.