Questions and Answers
What is the dominant phase of life for bryophytes?
What is the dominant generation in Psilotum, a whisk fern?
What is the dominant stage of life for bryophytes?
What is the dominant generation of Psilotum, a whisk fern?
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What is the dominant phase of life for bryophytes?
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What is the dominant generation of Psilotum?
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What are the two types of spores produced by seed plants?
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What is the dominant phase of life for bryophytes?
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What is the dominant phase of life for bryophytes?
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What is the dominant stage of life for bryophytes?
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What is the main axis of the frond called?
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What is the dominant stage of life for bryophytes?
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What is the dominant phase of life for bryophytes?
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What is the primary feature that distinguishes bryophytes from other plants?
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What type of plants lack vascular tissue and a prominence of gametophyte in their life cycle?
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What is the common name for all seedless vascular plants?
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What is the common name for all seedless vascular plants?
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What protects the sporangia?
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What does the vascular system found only in sporophytes do?
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What are the two parts of the gametophyte generation?
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What distinguishes liverworts from mosses?
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What is the dominant stage of life for Anthocerotophytes, hornworts, and Anthoceros?
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What is the main difference between mosses and liverworts?
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What is the difference between gymnosperms and angiosperms?
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What is the main distinguishing feature of liverworts?
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What is the main reason behind the dominance of sporophytes in all other vascular plants?
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What is the purpose of the sporophyte mother cell in ferns?
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What is the primary stage of life for liverworts?
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What is the distinguishing feature of liverworts?
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What type of plant has a body that is a flat thallus with no stem or leaves?
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How do ferns reproduce?
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What is the distinguishing feature of liverworts?
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What is the purpose of the sporophyte mother cell?
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What is the common name for all seedless vascular plants?
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What is the main reason behind the dominance of sporophytes in all other vascular plants?
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What anchors the fronds to the soil?
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What is the purpose of the pollen tube?
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What are the scales on the fronds used for?
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What is the process by which sporophytes produce spores?
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What is the process by which ferns produce spores?
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What is the typical habitat of liverworts?
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What are the two subdivisions/classes of Pteridophytes?
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What is the primary distinguishing feature of sporophytes?
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What type of reproduction does the sporophyte undergo?
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How do sporophytes reproduce?
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How do sporophytes reproduce?
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What is the purpose of xylem in plants?
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What is the difference between the megaspore and the microspore?
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What is the main reason behind the dominance of sporophytes in all other vascular plants?
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What is the purpose of the sporophyte mother cell in ferns?
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What are the two subdivisions of Pteridophytes?
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What are the fronds of a fern more robust than?
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What is required for sexual reproduction in seed plants?
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What is the purpose of conduction in plants?
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Are Pteridophytes considered a taxon?
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Where are the seeds of a gymnosperm located?
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What are the subdivisions of pinnae called?
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What is the relationship between ferns and horsetails?
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What are the two main classes of Pteridophytes?
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What are the clusters of sporangia called?
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What happens when the megaspore and the microspore merge?
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What is heterosporous?
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What is the difference between homosporous and heterosporous plants?
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What is the purpose of conduction in plants?
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What do the fronds of a fern do?
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What side of the leaflets are the pinnae on?
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What does heterosporous mean in relation to Pteridophytes?
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What is the function of the ovum?
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What is the main difference between pteridophytes and seed plants?
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What is the purpose of the vascular system found only in sporophytes?
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How do the fronds of a fern become smaller and less dense?
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What is the purpose of the megasporangium?
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What is the purpose of lignified cells in xylem?
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Study Notes
- Bryophytes are a group of non-vascular plants that are found in regions with high annual rainfall.
- Mosses are the most familiar bryophytes.
- Bryophytes have distinct alternation of generations: gametophytes are the most conspicuous, occupies a greater proportion of the life cycle, and is therefore the dominant phase of life. sporophytes are typically smaller and exist only for a short period in the life cycle. sporophytes are attached and are dependent to gametophytes for its nutrition. They produce spores in a spore capsule. Bryophytes lack branched sporophytes bearing multiple sporangia.
- Bryophytes lack vascular tissue, true leaves, and roots, and are restricted in upward growth due to this lack of support.
- Bryophytes are distinguished from other plants by their gametophyte, which is anchored by rhizoids.
- Bryophytes have a morphology that includes a plant surface that lacks a cuticle and a body that can be a thallus or differentiated into simple leaves and stems.
- Sporophytes are the dominant stage of life for bryophytes, and the sporangium is where spores are produced.
- Anthocerotophytes, hornworts, and Anthoceros are all plants that have a gametophyte as their dominant stage of life.
- Liverworts are a group of plants that lack vascular tissue and a prominence of gametophyte in their life cycle.
- Liverworts are typically small, however certain species may cover large patches of ground.
- Their 'leaves' are divided into 2/ 3 parts called lobes and their 'leaves' are arranged in three ranks along the stem.
- For thalloid liverworts, the body is a flat thallus with no stem or leaves.
- Liverworts are morphologically simpler than mosses and have a more often found on very damp and shady habitats.
- Liverworts typically have two generations a year, the sporophyte being larger, more complex, and dominant.
- Ferns are a group of plants that possess true roots, stems, and leaves. They produce spores and can live for many years.
- The gametophyte generation is made up of two parts: the sporophyte and the sporophyte mother cell.
- The sporophyte is a thin, heart-shaped cell that is photosynthetic.
- The sporophyte mother cell divides by meiosis to produce haploid spores.
- Sporophytes are only found in damp conditions and are susceptible to desiccation.
- Sporophytes produce spores by clustering together and producing sori on the undersides of pinnules.
- Sporophytes undergo asexual reproduction by producing spores.
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