Protista Kingdom - Definition, Characteristics, and Examples.
Kingdom Protista. Kingdom Protista: Characteristics Mostly unicellular, eukaryotic cells Reproduce asexually or sexually by conjugation Exhibit all three modes of nutrition Photosynthesis Ingestion Absorption Ultimately spawned all multicellular kingdoms Very diverse kingdom Difficult for taxonomists to agree on classification Diverse Modes.
There are five large groups of classification called KINGDOMS. With the invention of the microscope and further studies of life, three more kingdoms have been recognized, Fungi, Protista and Monera.
Protista Kingdom of Life In a superficial sense, these organisms are often described based on their similarities to the other groups of eukaryotes: animals, plants, and fungi.
Domain: Eukarya Kingdom: Protista Phylum: plasmodroma Class: sarcodina Order: amoebida Family: amoebidae Genus: Amoeba Species: Amoeba proteus.
Examples from the kingdom Protista include paramecium, amoebas and plasmodium vivax. These protists are considered more animal-like. Protists that are plant-like include dinoflagellates, euglena, chlamydomonas and ulva. Kelp, laminaria and volvox are also plant-like protists.
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Kingdom Protista is one in the five kingdom scheme of classification. This method of classification is regarded as old and is used formerly to classify organisms (as proposed by Robert Whittaker 1). In this system of classification, Protista is comprised of animal-like (protozoa) and plant-like (algae) eukaryotes.
Eventually a five-kingdom system came into use, in which Plantae and Animalia are more restricted in definition and protozoan groups are assigned to the kingdom protista.. This Kingdom contains from 20 to 50 distinct Phyla. With the exception of the larger Algae(seaweeds and kelp) Protists are pretty much all microscopic organisms.
For example, you have bacteria in your body that helps you digest, or break down, the food you eat. We also use bacteria to make some yummy foods, like cheese and yogurt. Lesson Summary.
Kingdom Protista. Examples: Amoeba, Paramecium, Euglena, Volvox, protozoa, and some algae Microscopic but larger than Monerans; Eukaryotic - Inside the cell, there are specialised structures called organelles which are surrounded by membranes, such as nucleus (containing DNA), chloroplasts (for photosynthesis), and mitochondria (for respiration).; Most are unicellular.
In cladistic classification, the contents of Protista are distributed among various supergroups (SAR, such as protozoa and some algae, Archaeplastida, such as land plants and some algae, Excavata, which are a group of unicellular organisms, and Opisthokonta, such as animals and fungi, etc.).
Kingdom Protista contains the protists, or all the organisms that do not fit into the other kingdoms of life. Protists can be heterotrophic or autotrophic, mobile or immobile, single-celled or multi-celled, solo or a member of a colony. They are categorized into three main categories based on how they obtain nutrients.
The term Protista was first used by Ernst Haeckel in the year 1886. This kingdom forms a link between other kingdoms of fungi, plants, and animals. Kingdom Protista is an important phase in early evolution and the very first protist probably evolved 1.7 billion years ago. Kingdom Protista is a very large group comprising of at least 16 phyla.
