1.Previous
3.Next

peritreme and the surrounding cuticle frequently bear specialized filter structures. Cuticular hairs, or trichomes, form a loose mesh of fine projections that intercept dust particles, spores, and small arthropods such as parasitic mites. Their hydrophobic surfaces also resist the entry of liquid during rain or partial submergence. Sieve plates, in contrast, are flatter cuticular plates pierced by many small pores, each small enough to exclude particulates and microorganisms while still permitting gas diffusion. Both arrangements are passive

1.Previous
3.Next