Practice Exam – Chapter 25 Seedless Plants

These flashcards cover key concepts regarding the classification, adaptations, life cycles, and reproductive strategies of seedless plants as found in Chapter 25.

What major evolutionary adaptation allowed plants to grow taller and transport water efficiently?

Vascular tissue

How are bryophytes best described?

Nonvascular plants

Which structure transports water upward through plants?

Xylem

What is the sporophyte generation?

Diploid and produces spores

Which group includes mosses and liverworts?

Bryophytes

What structure helps prevent water loss in plants?

Cuticle

What are fern leaves called?

Fronds

Spores are produced in structures called:

Sporangia

Which stage is dominant in bryophytes?

Gametophyte

What is the primary function of rhizoids?

Anchoring structures

How do seedless vascular plants reproduce?

Using spores

Microphyll leaves are characteristic of which plant group?

Lycophytes

What is the waxy layer covering plant surfaces called?

Cuticle

During which geological period did large forests of seedless vascular plants exist?

Carboniferous

If a small plant lacks vascular tissue and produces spores, which group does it belong to?

Bryophytes

A fossil plant shows vascular tissue but no seeds. Which classification does it fall under?

Seedless vascular plant

Which plant group would likely decline the most in a drier forest due to climate change?

Bryophytes

If spores are forming on the underside of leaves, what type of plant is this?

Fern

Which innovation allowed a plant to grow tall by efficiently transporting water?

Vascular tissue

In a seedless plant life cycle, when a spore develops into a small haploid plant, what stage is this?

Gametophyte

Which plant group requires swimming sperm for reproduction?

Ferns

What do the sori under a plant's leaves represent?

Sporangia

If a moss sporophyte depends on the gametophyte for nutrients, what does this indicate about moss life cycles?

Gameteophyte is dominant

What feature restricted the size of early land plants?

Lack of vascular tissue

Which plants dominated the large swamp forests that formed coal deposits?

Seedless vascular plants

What environmental challenge is a thick cuticle adapting a plant species to?

Water loss

Which group does a plant with true roots, stems, and leaves but no seeds belong to?

Seedless vascular plants

What is necessary for sperm cells to swim to reach eggs in certain plants?

Water

What does the alternation of generations represent?

Producing two different life stages: one haploid and one diploid.

What is the ploidy level of a fern gametophyte that produces gametes?

Haploid

What group does a plant with microphyll leaves and strobili come from?

Lycophytes

What advantage does a bryophyte colony have when growing tightly along the forest floor?

Improved water retention

What does the presence of flagellated sperm cells suggest about a plant species' evolutionary history?

It evolved from aquatic ancestors

Which stage of the fern life cycle is most affected if water levels drop in the environment?

Fertilization

Why does a plant with vascular tissue colonize terrestrial habitats more successfully than mosses?

It transports water internally

Which plants demonstrate the stage where vascular tissue evolved before seeds?

Ferns