Ch. 28: Non-vascular Land Plants (Bryophytes)

waxy layer secreted from epidermal cells slows water loss, helping to prevent desiccation coats all parts except the very tips of the shoot and most absorptive parts of the roots

found in -some hornworts -mosses porelike openings in cuticle-covered surfaces formed by a pair of cells that can change shape and so open up or close a space between them

central column (passage to the egg) cells that form the central column digest themselves and become a liquid when the egg is mature

absorbs water, minerals, and food from the parent

stalk supporting the capsule of a moss or liverwort supplies it with nutrients present on some mosses

produces and contains male gametes

haploid (n) generation -longer time and larger than sporophyte generation has a gametangium -produces the thallus (simple body)

hygroscopic -change shape in response to changes in humidity and the environment function in dispersing the spores to a new location

dependent, multicellular organism that is sheltered inside tissues of a parent plant

houses the spores in the sporophyte

diploid generation -produces haploid spores begins after fertilization will develop sporangia which produce spores

forms the innermost layer of cells in the stem of mosses transport water and minerals

change shape in response to changes in humidity and the environment

found in liverworts small cell masses that form cuplike growths on a thallus allow for asexual reproduction can grow new thalli when rainwater splashes them out of the cups and onto an appropriately moist substrate

found in -liverworts -mosses cells which can help anchor a plant and take up water in liverworts, rhizoids can break off the thallus and develop into new individuals

swollen lower portion of the archegonium containing the egg

passage to the egg

BOOK

found in mosses filamentous web of tissue produced after the spore germinates -can become dense enough to color the surface of soil visibly green cells on protonema develop into leafy, green gametophytes anchored by rhizoids can produce bud after bud, giving rise to a dense clone of genetically identical gametophytes

outside layer of cells (single layer) that surrounds gametangia that produce sperm

enlarged archegonial venter that protects the capsule containing the embryomic sporophyte

flap of the sporangium of the moss, covering the peristome falls off when the spores are mature

helps plants to not dry out resistant polymer that surrounds the zygotes of modern charophytes major component of the thick sporangium wall that protects spores from drying and other damage

16 teeth make a peristome