LSM2252 - Seedless Vascular Plant

Seedless vascular plants include mosses, club mosses, spike mosses, horsetails and ferns.

• True

• False

Club and spike mosses have microphylls, while ferns have megaphylls.

• True

• False

The indusia shown in the photo are false indusia, as they consist of the inrolled leaf margins forming membranous cover.

• True

• False

The sporangia burst open and discharge spores that germinate and grow by meiosis to form the gametophyte.

• True

• False

Prothallus is the gametophyte body of ferns. It is haploid, and it is the dominant generation in the fern life cycle.

• True

• False

Bird's nest fern (Asplenium nidus) has indusium, while resam (Dicranopteris linearis) has false indusium.

• True

• False

Aquatic fern Salvinia molesta can be invasive because it divides vegetatively at a fast rate and is capable of doubling its mass within 2-3 days under favorable conditions.

• True

• False

The hollow stems of horsetails (Equisetum spp.) contain a high amount of silica, making them rough. Due to their abrasive texture, the stems were used to scrub pots and pans.

• True

• False

The triangular spores in the picture are from the resam fern (Dicranopteris linearis).

• True

• False

The fern gametophyte, called a prothallus, develops from a haploid spore and bears both archegonia and antheridia.

• True

• False