22-2 Bryophytes Definition: small, seedless, non-vascular plants –Non-vascular: lack special tissues that carry H 2 O and nutrients throughout plant Habitat: found on land near streams, rivers, or other moist, shaded areas Most common are the mosses

22-2 Mosses Well adapted to life in these habitats: –Wet habitats (mosses need plentiful H 2 O for reproduction) –Nutrient-poor soils (mosses often called “pioneer plants” because they live on bare rock and help accumulate soil needed for other plants) –Harsh habitats (mosses are most abundant plants in polar regions)

22-3 Seedless Vascular Plants Most common are the ferns –Thrive in areas with a lot of moisture and little light

22-3 Seedless Vascular Plants Vascular tissue – special tissues that carry H 2 O and nutrients throughout plant –Xylem – carries H 2 O upward from roots to rest of plant –Phloem – carries nutrients and sugars throughout plant ** Both types can carry materials against the force of gravity

Draw “Alternation of Generations” picture Arrange paper in six sections as shown in class Title the upper left and upper middle squares “Alternation of Generations” Draw figure 22-2 on p Draw it on the upper left hand square of your six-sectioned paper Write the caption for picture underneath your drawing On upper middle square, define: haploid, diploid, gametophyte and sporophyte