describe the kingdom plan of classification
Answers
Plantae is the plant kingdom which contains all plants on the earth. They are multicellular eukaryotes. Characteristically, they contain a rigid structure that surrounds the cell membrane known as the cell wall. Plants also have a green colored pigment known as chlorophyll that is quite vital for photosynthesis. Hence, they have an autotrophic mode of nutrition. A plant kingdom is a massive group; hence, the kingdom is further categorized into subgroups. The best way to study about plants is to first recognize how the classification takes place within Kingdom Plantae. Once you know the simple stuff, it then becomes easier to be familiar with in detail about each plant.
Biologist Whittaker provided us the Five Kingdom Grouping, categorizing all the living organisms into five territories – Protista, Monera, Fungi, Plantae, and Animalia. To know additional about plants, it is vital to know more about the Kingdom Plantae or in simple versus the plant kingdom.
You will be astonished to see the different types of plants that are comprised here. You can see minute plants like the algae as well as the tallest vegetation like the Sequoia.
Certain plants have the supremely beautiful and attractive looking organelles called flowers, while some don’t contain any. In certain plants, you can see an appropriate root system, shoot system, and leaves, while in the simpler plants, it is only a thalloid structure.
Level of classification is grounded on the following three criteria:
1. Plant body: whether the body has well-differentiated assemblies or not.
2. Vascular system: whether the plant has a vascular system for carrying of substances or not.
3. Seed development: whether the plant allows flowers and seeds or not; if it does, then whether it is surrounded by fruits or not.
Each group of plants has distinct and unique features that fit exclusively to that group. While the thallophytes are the greenest of the plants, the angiosperms are plants with a complex assembly and a very well-established vascular system and reproductive system.
The gymnosperms are the cluster of plants that have an evolutionary meaning. These are the first plants to have advanced seeds, which is a well-organized mechanism of continuing the plant group at places away from the parental plant.
Considering all these features, the plant kingdom has been separated into five subgroups. They are as follows:
1. Thallophyta
2. Bryophyta
3. Pteridophyta
4. Gymnosperms
The five kingdom classification are- Monera, Protista, Fungi, Plantae and Animalia. The organisms which are placed under the kingdom Animalia are heterotrophic and depend on the other organisms for food.
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