Although embryophytes are all decended from a shared land plant ancestor with a multicellular diploid sprophyte stage, being nonvascular is an ancestral trait inherited from green algal-like ancestors rather than a synapomorphy that can be used to show they are monophyletic.

Do plants form a monophyletic group?

Land plants are monophyletic, all descend from a single common ancestor. One synapomorphy: development from an embryo protected by tissues of the parent plant. Therefore, also called embryophytes.

What plant groups are monophyletic?

We show that there are three monophyletic groups of extant vascular plants: (1) lycophytes, (2) seed plants and (3) a clade including equisetophytes (horsetails), psilotophytes (whisk ferns) and all eusporangiate and leptosporangiate ferns.

What group do non vascular plants belong to?

Nonvascular plants (often referred to collectively as the bryophytes) include three groups: the mosses (Bryophyta), approximately 15,000 species; liverworts (Hepaticophyta), approximately 7500 species; and hornworts (Anthocerophyta), approximately 250 species (Table 1).

Why are plants monophyletic?

Current evolutionary thought holds that all plants, green algae as well as land dwellers, are monophyletic; that is, they are descendants of a single common ancestor. The evolutionary transition from water to land imposed severe constraints on plants.

The Reproductive Lives of Nonvascular Plants: Alternation of Generations - Crash Course Biology #36

20 related questions found

Are non vascular plants Paraphyletic?

Why are nonvascular plants paraphyletic? They don't all include the descendants. The seedless vascular plants are paraphyletic, but the vascular plants are monophyletic.

Are plants monophyletic or Polyphyletic?

Land plants are monophyletic, all descend from a single common ancestor. One synapomorphy: development from an embryo protected by tissues of the parent plant. Therefore, also called embryophytes.

Which group of plants lacks vascular tissue quizlet?

Bryophytes are small because they lack vascular tissue. Mosses have a waxy, protective coating that makes it possible for them to resist drying, and thin filaments known as rhizoids that anchor them to the soil.

Which of the following is a non-vascular plant?

The correct answer is Mosses. Mosses are the non-vascular plants. All the bryophytes and the algae are non-vascular plants.

Why does nonvascular plant belong in this division?

Nonvascular plants belong to the division Bryophyta, which includes mosses, liverworts, and hornworts. These plants have no vascular tissue, so the plants cannot retain water or deliver it to other parts of the plant body. ... With no vascular tissue, the bryophytes cannot retain water for long periods of time.

What is a non monophyletic group?

A monophyletic group, sometimes called a clade, includes an ancestral taxon and all of its descendants. A monophyletic group can be separated from the root with a single cut, whereas a non-monophyletic group needs two or more cuts.

What is paraphyletic monophyletic and polyphyletic?

The monophyletic group consists of a most recent common ancestor and its entire descendants. ... The paraphyletic group consists of a most recent common ancestor and some of its descendants. The polyphyletic group is an unnatural assemblage of unrelated organisms who lack a most recent common ancestor.

What is a monophyletic group example?

An example of a monophyletic group is one that is comprised of humans, apes, and new world monkeys, as they share the most common recent ancestral group, which is the old-world monkeys.

Is photosynthesis monophyletic?

Conclusions. Our phylogenomic analyses support the idea that Plantae are monophyletic and that plastids form a monophyletic group to the exclusion of Cyanobacteria, providing compelling evidence for a single origin of primary photosynthesis in eukaryotes.

Are protists monophyletic?

Protista (not monophyletic group; is paraphyletic because does not contain all descendants of its most recent common ancestor).

Are fungi monophyletic?

Kingdom Fungi, one of the oldest and largest groups of living organisms, is a monophyletic group, meaning that all modern fungi can be traced back to a single ancestral organism.

What are the differences between vascular and nonvascular plants?

Vascular plants are plants found on land that have lignified tissues for conducting water and minerals throughout the body of the plant. Non-vascular plants are plants mostly found in damp and moist areas and lack specialized vascular tissues.

Which of the following non flowering plant groups is vascular?

Complete answer:Ferns are vascular plants that reproduce via spores. These plants belong to the order of angiosperms where they do not produce seeds or flowers and only propagate through spore formation and sporophyte generation.

What do nonvascular plants rely on to distribute nutrients?

Nonvascular plants are plants that do not have any special internal pipelines or channels to carry water and nutrients. Instead, nonvascular plants absorb water and minerals directly through their leaflike scales.

Which is true about non-vascular plants?

Unlike angiosperms, non-vascular plants do not produce flowers, fruit, or seeds. They also lack true leaves, roots, and stems. Non-vascular plants typically appear as small, green mats of vegetation found in damp habitats. The lack of vascular tissue means that these plants must remain in moist environments.

Which group of plants lack vascular tissue xylem and phloem?

The group of plants that lacks vascular tissue are called bryophytes.

Which of the following plant groups lacks vascular tissue and has a dominant gametophyte generation?

Bryophytes | Back to Top

The earliest land plants were most likely bryophytes. Bryophytes lack vascular tissue and have life cycles dominated by the gametophyte phase, as shown in Figure 7.

Are plants polyphyletic?

The arrangement of the members of a polyphyletic group is called a polyphyly /ˈpɒlɪˌfaɪli/. ... Other polyphyletic groups are for example algae, C4 photosynthetic plants, and edentates.

Which group is not a Seedless non vascular plant?

The two groups of seedless plants are nonvascular plants and seedless vascular plants. Mosses, liverworts, and hornworts do not have vascular tissue to transport water and nutrients. Each cell of the plant must get water from the environment or from a nearby cell.

What is an example of a polyphyletic group?

Polyphyletic groups are formed when two lineages convergently evolve similar character states. ... An example of a polyphyletic group is bats and birds: both have wings, but they have evolved separately.