Companion cells and sieve tubes are absent in pteridophytes. ... Gametophyte of pteridophytes require cool, dry and shady places to grow.

Which phloem element is absent in pteridophytes?

Phloem is composed of four kinds of cells: sieve elements, companion cells,phloem parenchyma and phloem fibres. Companion cells are present only in angiosperms. Companion cells are absent in pteridophytes and gymnosperms.

What are absent in xylem and phloem of pteridophytes?

Xylem lacks true vessels in Pteridophytes. ... In phloem, sieve cells are present, companion cells and sieve tubes are absent in pteridophytes. 6. In angiosperms, secondary growth is present except monocots.