Ch 29 Seedless Plant Smartbook

In mosses, male gametangia are called ____ , while female gametangia are called ____

Blank 1: antheridia Blank 2: archegonia

A common feature of whisk ferns and horsetails is that they both have sperm with___ ; for that reason, those plants require free water for _____.

Blank 1: flagella or flagellum Blank 2: fertilization, reproduction, or sexual reproduction

Of the two types of leaves, those with a single vein supporting relatively small leaves are called ________ while those with branching veins that likely arose when branching stems became webbed with leaf tissue are ________

Blank 1: lycophylls Blank 2: euphylls

Seeds are very resistant structures, that can ___ and nourish the young _____

Blank 1: protect Blank 2: embryo or plant

The closest living descendants of the first land plants are the nontracheophytes, called the ___

Bryophytes

Select all true statements about lycophytes.

Despite resembling true mosses, lycophytes have vascular tissues. In lycophytes, the sporophyte generation is dominant.

Which of the following distinguish land plants from the clade of green algae known as the charophytes? Multiple select question. 1. Diploid embryos 2. Multicellular gametophytes 3. The ability to conduct photosynthesis 4. Multicellular sporophytes 5. Vascular tissue

Diploid embryos Multicellular gametophytes Multicellular sporophytes

Choose all features that confined the green algal ancestors of plants to water. Multiple select question. More predators in land-based ecosystems Higher levels of UV light on land The inability to produce chlorophyll in a high oxygen environment Less water availability in a terrestrial environment

Higher levels of UV light on land Less water availability in a terrestrial environment

Select all types of leaves found in vascular plants.

Lycophylls Euphylls

Which of the following are characteristics of all (with a few exceptions, such as parasitic plants) land plants? Multiple select question. Conspicuous sporophytes and microscopic gametophytes Multicellular haploid and diploid generations Flowers and seeds Diploid embryos The ability to photosynthesize

Multicellular haploid and diploid generations Diploid embryos The ability to photosynthesize

Which of the following distinguish land plants from the clade of green algae known as the charophytes?

Multicellular sporophytes Diploid embryos Multicellular gametophytes

Select all features of fern sporophytes

Photosynthetic Multicellular Vascular

Select all features of fern sporophytes.

Photosynthetic Vascular Multicellular

Select all structures produced by mosses.

Rhizoids Sporangia

Choose all components of fern sporophytes.

Rhizomes Fiddleheads Fronds

Select the three clades of vascular plants.

Seed plants Pterophytes Lycophytes

Antheridia and archegonia produce which of the following, respectively?

Sperm and eggs

During the evolution of plant vascular tissues, which developed first?

Stems

Select all features common to bryophytes.

The gametophyte is more conspicuous than the sporophyte. The gametophyte is photosynthetic.

Select all adaptations of land plants that distinguish them from their algal relatives. Multiple select question. The presence of specialized water transporting tissues The presence of a waxy cuticle on air-exposed surfaces The presence of stomata for gas exchange The presence of chlorophyll for photosynthes

The presence of specialized water transporting tissues The presence of a waxy cuticle on air-exposed surfaces The presence of stomata for gas exchange

Select all true statements about hornworts.

Their gametophytes are photosynthetic. Their sporophytes have stomata. Of all bryophytes, their sporophytes are most similar to those of vascular plants.

Select all features common to whisk ferns, horsetails, and ferns.

They form antheridia and archegonia They require free water for fertilization

Select all features of horsetails

They have jointed stems. Their stems are hollow. They are homosporous.

Select all true statements about whisk fern sporophytes.

They lack true leaves. They are photosynthetic (green).

Select all ways in which moss leaflike structures differ from true leaves

They lack veins They lack stomata Most of their surface is one cell layer thick

Select all features of liverworts.

They may be leafy or lobed. Gametophytes have rhizoids.

Select all adaptive features of seeds

They nourish the embryo. They protect the embryo.

Select all true statements about bryophytes.

They undergo meiosis to produce spores The gametophyte generation is more conspicuous than the sporophyte

The sporophyte of what plant group consists of evenly forking photosynthetic stems that lack roots and leaves?

Whisk ferns

A major adaptation to a terrestrial lifestyle in land plants is Multiple choice question. a) a modified form of meiosis. b) the production of genetically uniform gametes. c) enhanced nutrient uptake capacity. d) a cuticle on exposed surfaces.

a cuticle on exposed surfaces.

In mosses and ferns, the haploid (gametophyte) generation occupies

a larger portion of the life cycle than it does in seed plants.

In mosses and ferns, the haploid (gametophyte) generation occupies Multiple choice question. a larger portion of the life cycle than it does in seed plants. a smaller portion of the life cycle than it does in seed plants. the same portion of the life cycle as it does in seed plants.

a larger portion of the life cycle than it does in seed plants.

The closest living descendants of the first land plants are the

bryophytes

The closest living descendants of the first land plants are the nontracheophytes, called the

bryophytes

Hornwort gametophytes are typically provided with nitrogen by their symbiotic, nitrogen-fixing

cyanobacteria

The leaves of ferns are called ___

fronds

In this fern life cycle, the circle is enclosing the

gametophyte.

A typical land plant has a(n) ______ life cycle, which includes multicellular haploid and diploid stages.

haplodiplontic

A plant is said to be ___ if all of its spores are similar in appearance.

homosporous

Plants that produce one spore type are called ______.

homosporous

Choose all that are carried in vascular tissue.

hormones minerals water sucrose

The are seedless vascular plants with hollow jointed stems.

horsetails

Organisms that exhibit a haplodiplontic life cycle have

multicellular haploid and diploid stages.

In mosses and ferns, the gametophyte generation is

photosynthetic and free-living.

Mosses differ from other bryophytes because their gametophytes

produce structures that look like leaves and stems

Unlike bryophytes, lycophytes

produce vascular tissue.

In this fern life cycle, the circle is enclosing

production of spores by meiosis.

The three clades of vascular plants are the lycophytes, pterophytes, and ___ plants

seed

Liverworts reproduce through

sexual and asexual means.

Clusters of sporangia on ferns are called

sori

The cone-like structure on a horsetail stem produces haploid

spores

The earliest vascular plants contained

stems but not roots.

An important difference that distinguished the leaflike structures of moss gametophytes from true leaves is

the lack of vascular tissue.

Choose the two types of vascular tissue.

xylem phloem