Exam 27: Plants Without Seeds: From Water to Land

The _______ generation extends from the zygote through the adult, multicellular, diploid plant.

Describe the likely habitat of early land-colonizing plants.

The horsetails and ferns are members of a single clade, the

The most likely reason that nonvascular land plants have never evolved to the size of vascular plants is that they lack

Despite being the largest clade of green algae, _______ are not believed to have given rise to land plants.

A club moss sporophyte with a single terminal strobilus produces 12,000 spores.How many spores would the sporophyte have produced if it had dichotomously branched twice before the strobili developed?

Match the description with the correct group of seedless vascular plants from the list that follows. They bear simple leaves arranged spirally on a stem and exhibit apical growth; the sporangia are contained within conelike structures called strobili.

A(n) _______ is a flattened photosynthetic structure emerging laterally from a main axis or stem and possessing one strand of vascular tissue.

Molecular and morphological evidence indicates that _______ are a sister group of land plants.

A growth pattern that contributed to evolution of megaphylls is

Why is liquid water required for sexual reproduction in mosses?

In vascular plants, a tissue called _______ conducts the products of photosynthesis from sites where they are produced or released to sites where they are used or stored.

Plants with an unequally branching independent sporophyte receive a number of benefits from this structure.Which of the following is not one of these benefits?

Land plants that have an internal transport system are called _______, or vascular plants.

The first ferns appeared during the _______ period.

The sporophyte generation

Which group is unlikely to have contributed significantly to the world's current energy supply?

Which statement about the hornworts is true?

Which plant tissue would not be affected by treatment with a chemical that disrupts chromosome pairing for crossing over?

The lycophyte group of plants includes