Pteridophyta
True roots, stems and leaves, with vascular tissues.
Water up a fern
A fern has roots, a stem and leaves. Water must reach the leaves and food must reach other parts.
How do you think this transport takes place?
What this lesson covers
The idea
Pteridophytes such as ferns have true roots, stems and leaves and vascular tissues, xylem carrying water and phloem carrying food; they need aquatic conditions for reproduction and produce no seeds.
Water up a fern
A fern has roots, a stem and leaves. Water must reach the leaves and food must reach other parts.
How do you think this transport takes place?
- Through special transport tissues
- Directly through the whole body surface
- It does not need to
Two tubes
Press Next step.
A transport system
Because pteridophytes have vascular tissues, water and food reach parts of the plant throughout. They still need aquatic conditions for reproduction and do not make seeds.
Pteridophytes such as ferns have true roots, stems and leaves and vascular tissues, xylem carrying water and phloem carrying food; they need aquatic conditions for reproduction and produce no seeds.
Notes
Pteridophytes (ferns) have true roots, stems and leaves and xylem and phloem, but need aquatic conditions for reproduction and make no seeds.
Check yourself
Which tissue carries water in a fern?
Which tissue carries food in a fern?
What do pteridophytes need for reproduction?
Pteridophytes do not produce ...
- Xylem — correct. Yes!
- Phloem. Phloem carries food.
- Thallus. A thallus is the simple body of thallophytes, not a tissue of ferns.
- Xylem. Xylem carries water.
- Phloem — correct. Yes!
- Rhizoid. Rhizoids are the root-like structures of bryophytes.
- Cones and needle-like leaves. Cones and needle-like leaves belong to gymnosperms.
- Flowers and fruits. Flowers and fruits belong to angiosperms.
- Aquatic conditions — correct. Yes!
- seeds — correct. Yes!
- roots. Pteridophytes have true roots, stems and leaves.
- vascular tissues. Pteridophytes have xylem and phloem.