Which lineage of green algae is most resemble early plant ancestors?
Lesson 9 HW
|________, a chemical that hardens cell walls and supports terrestrial plants, is found in all plants EXCEPT ________.||Lignin; bryophytes|
|Which lineage of green algae is believed to most resemble early plant ancestors?||charophytes|
Why are mosses and ferns considered incompletely adapted to the terrestrial environment when compared with most other plants?
Why are ferns considered incompletely adapted to the terrestrial environment, when compared with other plants? Their sperm are flagellated and require water for fertilization. They lack vascular tissue. The gametophyte generation is dominant.
Which of these adaptations to a terrestrial existence evolved most recently?
30 Cards in this Set
|What is pollen?||a male gametophyte|
|Which of these adaptations to a terrestrial existence evolved most recently? a) stomata b) gametangia c) seeds d) cuticle e) vascular tissue||seeds|
|Madagascar is an island in the ____ Ocean.||Indian|
|Fungal mycelia are composed of _____.||hyphae|
Are seedless vascular plants?
They contain tissue that transports water and other substances throughout the plant. Seedless vascular plants are plants that contain vascular tissue, but do not produce flowers or seeds. In seedless vascular plants, such as ferns and horsetails, the plants reproduce using haploid, unicellular spores instead of seeds.
What were the first plants that did not require water for transferring sperm to eggs?
Gymnosperms were the first plants that did not require water for transferring sperm to eggs.
Are seedless vascular plants quizlet?
Seedless vascular plants have true leaves and roots, and they produce sporophylls in their sporophyte stage. Like all terrestrial plants, seedless vascular plants undergo an alternation of generations. The sporophyte produces haploid spores. The vascular plant life cycle is dominated by the sporophyte stage.
Which traits distinguish plants from Charophytes?
Land plants share some key traits only with charophytes: rings of cellulose- synthesizing complexes, similarity in sperm structure, and the formation of a phragmoplast in cell division. Comparisons of nuclear and chloroplast genes also point to a common ancestry.
Which of the following are adaptations for terrestrial life seen in plants?
Plant adaptations to life on land include the development of many structures — a water-repellent cuticle, stomata to regulate water evaporation, specialized cells to provide rigid support against gravity, specialized structures to collect sunlight, alternation of haploid and diploid generations, sexual organs, a
Which group of plants lacks vascular tissue?
Plants that lack vascular tissue, which is formed of specialized cells for the transport of water and nutrients, are referred to as non-vascular plants or bryophytes. Non-vascular embryophytes probably appeared early in land plant evolution and are all seedless. These plants include liverworts, mosses, and hornworts.
Which of these is a major trend in land plant evolution?
The major trend in the evolution of land plants is the domination of the sporophytic phase in the life cycle and alternation of generation. It also moves towards a larger gametophytes.
What important role do fungi play in many ecosystems?
Fungi play a crucial role in the balance of ecosystems. In these environments, fungi play a major role as decomposers and recyclers, making it possible for members of the other kingdoms to be supplied with nutrients and to live. The food web would be incomplete without organisms that decompose organic matter.
How do fungi typically reproduce?
Fungi reproduce asexually by fragmentation, budding, or producing spores. Fragments of hyphae can grow new colonies. Mycelial fragmentation occurs when a fungal mycelium separates into pieces with each component growing into a separate mycelium. Somatic cells in yeast form buds.
How do you know if a plant is vascular seedless?
Seedless vascular plants include ferns, horsetails and clubmosses. These types of plants have the same special tissue to move water and food through their stems and foliage, like other vascular plants, but they don’t produce flowers or seeds. Instead of seeds, seedless vascular plants reproduce with spores.
What is the most common seedless vascular plant?
With their large fronds, ferns are the most readily recognizable seedless vascular plants. They are considered the most advanced seedless vascular plants and display characteristics commonly observed in seed plants. More than 20,000 species of ferns live in environments ranging from tropics to temperate forests.
What type of plants are seedless?
These seedless plants include mosses, liverworts, club mosses, ferns, and horsetails. They reproduce by forming spores.