Polypodium glycyrrhizas Domain is Eukarya, its put into this category because they contain nuclear envelope and membrane-enclosed organelles in its individual cell. Its Kingdom is Plantae because of its definitive plastid developed from primary endosymbiosis.
Its Phylum is Pteridophyta, Pteridophyta means "feathered plant". The topics that he mentions involve things such as genetic manipulation as well as cloning. He begins by mentioning how this has been simply used for the growth of plants and crops, but he questions where this is potentially leading and how the future of the environment could potentially be destroyed in many ways.
He makes a strong argument about this by saying, "But by doing these things, we are changing the genetic makeup, and do we really know what the long-term impact will be on the species of plants, on the soil, on the environment? There are obvious commercial benefits, but how do we judge what is really useful? Plant classification is a system of dividing plants into groups and categories according to characteristics. The binomial system which we use today has developed from the Linnean system, which is considered the international language for naming plants.
The latinized name is comprised of two sections, the generic term and the specific epithet which forms a binomial named the species. The reason for using a binomial nomenclature is to bring about some degree of order to the procedure of naming plants compared to common or descriptive names by allocating a universal name throughout the world to a given plant.
The components of this amazing plant classification system are explained below. Plant families are a grouping of genera or single genus that resemble each other very closely or consistently in common appearance and technical characters. Characteristics shared in flowers, fruit and other organs, are grouped together into various plant families. There are two types of true hybrids, namely interspecific hybrids and intergeneric hybrids.
Interspecific hybrids are the more common of the two types and result from cross-breeding between two species within the same genus. The new plant resulting from this cross is usually given a name similar to the species name, but following a multiplication sign. One good example of interspecific hybridization is modern hybrid roses. Because so much sexual cross-breeding has occurred in these sorts of hybrids, they are given simple, individual. Show More. Polyploidy Plant Experiment Words 4 Pages plants, and are considered a process of evolution as they have evolved in order to adapt to the change in the environment.
Read More. He published the results of his work in his 12 editions of Systema Naturae, one of the milestone documents in the history of the biological sciences. His basic system, continually expanded and modified, is perhaps the one most commonly used today.
Within each of the broad categories, the scientists place organisms into a hierarchy of groupings. At each hierarchal level, from phyla to genera, the scientists group organisms with increasingly closely shared characteristics.
At the final level, species, the organisms all have very similar characteristics. Conceptually, kingdoms comprise groups of phyla or divisions ; phyla or divisions include groups of classes; classes, groups of orders; orders, groups of families; families, groups of genera; and genera, groups of species. In accordance with the practice established by Linnaeus, scientists call a species by the name of the genus singular of genera , capitalized, and the species, uncapitalized.
For instance, the Mojave yucca carries the scientific name Yucca schidigera; the Joshua tree yucca, Yucca brevifolia; the soaptree yucca, Yucca elata; and the Torrey yucca, Yucca torreyi. All these plants belong to the same genera, the yucca, and each has its own species name.
Taxonomists, at least in the traditional Linnaeus method for classifying plants, separate the plantae kingdom into four major groups, or divisions, including: mosses and liverworts, which have no proper root systems; ferns, which have proper roots and produce spores specialized reproductive cells rather than conventional seeds ; coniferous trees, which have root systems and needle-shaped leaves and cones; and flowering plants, which have root systems and flowers that produce seeds.
The dominant division in many biomes that is, biotic communities, for instance, our deserts , with a quarter of a million species, is that of the flowering plants. Typically, its leaves have parallel veins, and its stems have vascular bundles the water-conducting vessels that occur in a random pattern in cross section. It produces flowers with petals that occur in multiples of four or five. Its leaves have network veins. Its stems have vascular bundles that occur in a concentric ring pattern in cross section.
It should be noted that the taxonomists are continually modifying and updating the designated classifications for the flowering plants, especially the dicots, as new technologies and knowledge emerge.
Taxonomists have struggled in their efforts to divide the classes into orders that contain logically related groups of the flowering plants. By one method, they have established six superorders, which comprise family groups thought to have evolved, along different pathways, from common ancestors. Further, they have divided the superorders into various orders. They have, however, disagreed over the groupings and divisions.
A few of the better-known families in our deserts include the lily, cactus, pea and grass families. The plants of the lily family have leaves with parallel veins, showy flowers with six parts and root systems with rhizomes. Have the students make a list of plants then classify them and justify their reasons. Repeat this activity after the unit of study, using the same list of plants.
Sign up for our Interactive Classroom - Coming Soon! Teaching Standards. Big Ideas Plants must be classified into identifiable groups in order for us to have a clear, organized way of identifying the diverse array of plants that inhabit the planet.
Essential Questions How are plants categorized into groups? What are the characteristics of plants that are used to classify them? Content Outcomes Addressed Students will be able to understand the purpose and importance of classification.
Students will be able to perform simple classification of plants and to justify their reasoning by pointing to defining plant characteristics e. Students will be able to compare and contrast plants species and to identify specific characteristics that distinguish one plant group from another.
D K-2 , LS1. A K-2 , LS4. A1, 2 MD. A3 National Geography Standards: 2, 7, 8. Example of Plant Classification. Pre- and Post-Assessment Have the students make a list of plants then classify them and justify their reasons.
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