They are fixed in one place they don? Both diploid and haploid can undergo mitosis. Skip to content Technology. April 21, Joe Ford. Meiosis Chromosome Vs. Bio Explorer. Bryophytes — Moss plants in Iceland The Phylum Bryophyta [2] , are the most diverse group with more than 10, plant species. This phylum include the mosses, liverworts, and hornworts. Among all plant phyla, the members of the Phylum Bryophyta are considered the simplest.
Regarding physical appearance, mosses are small and inconspicuous. Bryophytes lack vascular tissue and wood that can render them structural support.
They also lack true leaves, stems, and roots that can help them transport water and nutrients. Because of this, they are limited to a narrow range of habitats. Despite lacking some essential plant organs, bryophytes play an important role in minimizing erosion along bodies of water, carrying out water and nutrient cycling in forests, and regulating temperature in permafrost. Also see the biological weathering article. Regarding habitats and physical structures, bryophytes are related to lichens [3] symbiotic relationship between a fungus and algae.
For instance, both of them utilize the moisture in the environment to transport minerals and nutrients. Because of that, bryophytes live in moist places and somehow have adapted several methods that can help them thrive in dry periods. Bryophytes reproduce through spores. Check out the life cycle of Bryophytes in detail here. At present, the classification of some species of bryophytes remains arbitrary and is up for further studies.
Bryophyte Examples Mosses. The next phylum in this list is the Phylum Pteridophyta which is composed of almost 12, with over two-thirds are tropical species of true ferns and fern allies.
Pteridophytes [4] are seedless plants; being such, they are incapable of passing on their genetic material to their offspring using cones, fruits, or seeds.
Instead, this classification of plants produces spores that are located on the underside of their leaves, known as sporophylls. Pteridophytes can catapult their spores even at long distances because of the spring-like structures of these sporangia-containing spores. Regarding physical appearance, pteridophytes [5] are extremely diverse, and no single characteristic can describe them.
Leaves of ferns are called fronds, which typically are coiled until they unroll at maturity. They also have horizontal stems called rhizomes and have simple leaves roots. Unlike bryophytes, they are already vascular plants and capable of transporting fluids.
Through time, pteridophytes have already adapted to a wide range of habitat: they can be aquatic, terrestrial, and even cold-resistant, but most of them still prefer to thrive in tropical regions. See the life cycle of Pteridophytes in detail here. Pteridophyte Examples Salvinia Natans.
Materials Paper and pencils Procedure Give the students 5 to 7 minutes to come up with, and write down, as many plants as possible. Put some examples on the board to get them started. Have the students call out the plants that they came up with, and add these to the examples already on the board. Ask the students to get into groups of four and give them 7 to 10 minutes to come up with categories no more than that can be used to organize the plants on the board.
This is just a warm-up to get them thinking about ways of categorization. Have the groups of students talk to each other about how they chose to classify the plants.
Discussion Questions What are some ways the groups classified plants? How did they come to those decisions? Is it important to have an organized and predetermined way of classifying plants? Why or why not? Talk about how scientists generally conduct classification of plants using physical similarities and dissimilarities to distinguish species from one another. Talk about why classification is important. The following are some suggested reasons: It helps us remember different plants i.
For example, if all female mammals produce milk for babies, then females in a new mammal species should also have the ability to produce milk. Note: This is dependent on the nature and environment of the school, so the teacher should make adjustments as necessary. For example, the parts could include the school garden, courtyard, cafeteria, the classroom, etc.
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