As is true of the gametophytes of all land plants, the gametophytes of true mosses lack stomata. Yet, the feather moss Pleurozium harbors nitrogen-fixing cyanobacteria. Which of the following is a feature of moss gametophytes that is most important for the continued survival of these cyanobacteria in the tissues of the feather moss gametophyte?
A) lack of cuticle
B) lack of vascular tissues
C) lack of true leaves or roots
D) lack of an independent sporophyte
E) lack of multiple cell layers in "leaves" of "buds"
Terrestrial plants and animals can be characterized by analogous pathways for water gain and loss.
Water transport in plants
Model for ecosystems on land
A land snail (Helix aspersa) with the opening that leads to its lung visible at the left.
Generalized life cycle for land plants
Light-independent reactions in C3 plants.