BIOL112 SI- Session 17 (3_26)- Ch. 25 (part 3)-26

Ferns do not exhibit alternation of generations since they do not have gametophytes;

• True

• False

Which of these is not a reason why seedless plants are important?

• Mosses serve as an indicator of environmental pollution.

• Ferns accelerate topsoil formation and can be used as food.

• Peat mosses are a renewable source of fuel.

• Angiosperms produce flowers for better reproductive dispersal.

The dominant phase of non-vascular plants is the gametophyte, while the dominant phase of vascular plants is the sporophyte.

• True

• False

The ____ is produced from the diploid zygote and grows into the the sporophyte when germinated.

• embryo

• seed

• pollen grain

• ovule

In seed plants, the male gametophyte relies on water to reach the female organs.

• True

• False

Sporophytes are ____, while gametophytes are ____.

• haploid, diploid

• dominant, non-dominant

• diploid, haploid

• non-dominant, dominant

Which is true of seed plants?

• Their branched sporophytes are independent of the gametophyte for nutrition.

• Their dispersed spores grow into sporophytes.

• They have reduced and retained gametophytes.

• They evolved before seedless plants.

Pterophytes have large megaphylls that are called ____.

• Fronds

• Flagellas

• Fiddleheads

• Strobili

Which is NOT true of seed plants' gametophytes?

• They mature within the sporangia.

• They are very small.

• They are for reproduction.

• They are homosporous, so one type produces both the egg and sperm.

____ contain the sperm of the plant.

• Embryos

• Pollen grains

• Seeds

• Sporophytes