Seedless Plants

Lycophytes

Lycophytes

________ and Pterophytes do not have seeds.

Vascular plants

________ include seven extant phyla grouped in three clades.

Sporophyte

________ consists of ribbed, jointed photosynthetic stems that arise from branching rhizomes with roots at nodes.

Gametophytes

________ consist of small, leaflike structures around a stemlike axis.

Fruits

________ in the flowering plants (angiosperms) add a layer of protection to seeds and attract animals that assist in seed dispersal, expanding the potential range of the species.

land plants

All ________ are haplodiplontic.

Cells

________ have a single large chloroplast.

Conspicuous sporophyte

________ and much smaller gametophyte are both photosynthetic.

Diploid spore mother cells

________ (sporocytes) undergo meiosis in sporangia.

Sporophyte

________ consists of evenly forking green stems without true leaves or roots.

Gametophyte

________ has been reduced in size relative to the sporophyte during the evolution of tracheophytes.

Diploid spore mother cells

________ in sporangia produce haploid spores by meiosis.

Sporophyte

________ embedded in gametophyte tissue.

Gametophyte

________ lacks vascular tissue.

Charophytes

Sister to all land plants

Multicellular diploid stage

$sporophyte$

Multicellular haploid stage

gametophyte

Gametophyte

conspicuous and photosynthetic

Sporophytes

small and dependent

Not true leaves

no vascular tissue

Archegonia

Female gametangia

Antheridia

Male gametangia

Origin is puzzling

no fossils until Cretaceous

Silica deposits in cells

scouring rush

Fern life cycle differs from that of a moss

much greater development, independent, dominance sporophyte

Rhizoids but not true roots

no vascular tissue