Non-Vascular Plants

Grade 8 Science Learner's Module
Non-Vascular Plants

1. Nonvascular Plants

2. Nonvascular Plants

3. What are Nonvascular P lants? Nonvascular Plants (bryophytes) are plants which do not have tissues to transport water and food. They don’t have real roots, stems and leaves .

4. How Do they Survive? They are attached to the places where they live by means of their root-like rhizoids . Rhizoids absorb water and nutrients; anchors the plant to a surface instead of true roots. They grow very close to damp grounds, stone walls or tree trunks.

5. How do liverworts, mosses and hornworts differ in appearance? Liverworts develop “umbrella-like” structures that produce eggs and sperms . Mosses have “capsules” which you can see at the tip of its thin stalks. Capsules contain the spores. Hornworts are thin “thorn-like” structures .

6. Importance of Nonvascular Plants They provide oxygen to many organisms. Their “ carpetlike ” growth covering large areas in hilly grounds prevent erosion and increase the capacity of soil to hold water . Dried Sphagnum or peat moss is used to wrap plants and breakable items during transport. Gardeners use them to retain more water in the soil for important crops. Old , dead sphagnum form thick deposits called peat , is used as fuel in some places.

7. Why do you think nonvascular plants cannot grow very large or tall? Without a vascular system, mosses, and liverworts cannot grow very large. If you have seen mosses, you know that they are actually carpets of individual plants. They are rarely taller than one inch high. Another important characteristic of these little guys is that they require water to reproduce. It's another characteristic of their low place in plant evolution. While all plants need water, mosses and bryophytes need droplets of water to enable their haploid reproductive cells to combine.

8. Presented By: Aprille Joyce Castro Wednesday Guillermo Marjorie Platin