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The more basic characteristic for classifying organisms is the kind of cells they are made of. Different organisms may share the same habitat but may have entirely different form and structure. So, the place where they live cannot be a basis of classification.

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THE CLASSIFICATION OF LIVING THINGS INTO FIVE KINGDOMS. The first person to divide living things into five broad kingdoms was North American ecologist Robert Whittaker.

Taxonomy is the branch of biology that studies the naming, arranging, classifying, and describing organisms into groups and levels.

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It is divided into phyla or divisions, which are further subdivided into classes. Further divisions include order, family, genus and species, in that order. Thus, species is the basic unit of classification.

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It is divided into phyla or divisions, which are further subdivided into classes. Further divisions include order, family, genus and species, in that order. Thus, species is the basic unit of classification.

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Basis of classification: There are the certain features or properties used for the classification of living organisms which are known as characteristics. Organisms with same characteristics are placed in same groups. Presence and absence of nucleus in the cell. Body composed of single cell or group of cells.

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Why is a single-celled organism not classified as an animal? Animals are multicellular. Why are sponges considered animals? They are multicellular and heterotrophs.

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The more the complex an organism is more is the number of the cells. The life process become more complex with the complexity of an organism. Example: unicellular organism such as Amoeba have simpler functioning whereas we human have complex system and functioning.

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Animals are multicellular, which means they have many cells.

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Multicellular and unicellular organisms are similar in a way that they show almost all the life functions and processes such as reproduction and metabolism. They possess RNA and DNA, which can display a range of lifestyles that are essential to most of the ecosystem that we currently exist in.

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How does multi-cellular organisms maintain homeostasis? The cells of multicellular organisms perform specialized tasks and communicate with one another in order to maintain homeostasis. Areas that hold that hold adjacent cells together and enable them to communicate.

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The correct answer is Multicellular organisms. Multicellular organisms are organisms that consist of more than one cell, in contrast to unicellular organisms.

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Phylogenetic classification system is based on the evolutionary ancestry. It is based on the evolution of life and shows the genetic relationships among organisms. It generates trees called cladograms, which are groups of organisms that include an ancestor species and its descendants.

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It is based on evolutionary ancestry and generates trees called cladograms. Cladistics also identifies clades, which are groups of organisms that include an ancestor species and its descendants. Classifying organisms on the basis of descent from a common ancestor is called phylogenetic classification.

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When classifying plants and animals, scientists look for homologies, or common physical traits such as your arm and a bird’s wing, that are inherited from a common ancestor. If the organisms share multiple homologies, they are likely related.

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Plant cells have a cell wall, as well as a cell membrane. In plants, the cell wall surrounds the cell membrane. This gives the plant cell its unique rectangular shape. Animal cells simply have a cell membrane, but no cell wall.

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Plant cells have a cell wall, but animals cells do not. Cell walls provide support and give shape to plants. Plant cells have chloroplasts, but animal cells do not. Chloroplasts enable plants to perform photosynthesis to make food.

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Both plant and animal cells are eukaryotic, so they contain membrane-bound organelles like the nucleus and mitochondria. The nucleus of eukaryotic cells is similar to the brain of the cell.

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Prokaryote definition. Prokaryotes are unicellular organisms that lack membrane-bound structures, the most noteworthy of which is the nucleus. Prokaryotic cells tend to be small, simple cells, measuring around 0.1-5 μm in diameter.

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The major difference between a primary cell and the secondary cell is that primary cells are the ones that cannot be charged but secondary cells are the ones that are rechargeable.

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Living things are classified into groups that start out large and become more specific in a system of classification called taxonomy. Scientists classify living things at eight different levels: domain, kingdom, phylum, class, order, family, genus, and species.

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Many individual organisms can be organized into the following levels: cells, tissues, organs, and organs systems. An ecosystem consists of all the populations in a given area, together with the nonliving environment. The biosphere is the part of Earth where all life exists.

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Species interactions within ecological webs include four main types of two-way interactions: mutualism, commensalism, competition, and predation (which includes herbivory and parasitism). Because of the many linkages among species within a food web, changes to one species can have far-reaching effects.

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Organisms are usually grouped together based on their unique characteristics. The classification of an organism often provides useful information about its evolutionary history and which other organisms are related to it.

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Taxonomy is the science of finding, describing, and categorizing organisms with the ultimate goal to name the species. In traditional Linnean taxonomy the seven major taxonomic groups are in order from least specific to most specific) Kingdom, Phylum, Class, Order, Family, Genus and Species.

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Organisms reproduce to continue the chain of life, to pass on its genes which are acquired over millennia. Reproduction is essentially a process by which individuals produce new individuals of the same kind. And this process is very important for the existence of life on earth.

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Living things are highly organized, meaning they contain specialized, coordinated parts. All living organisms are made up of one or more cells, which are considered the fundamental units of life. Even unicellular organisms are complex!

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The biological levels of organization of living things arranged from the simplest to most complex are: organelle, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystem, and biosphere.

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Species interact with one another in many ways, which helps in the functioning and maintenance of ecosystems. The main forms of interactions are: Competition, Predation and Herbivory, Commensalism, Mutualism and Parasitism. While some of these interactions are harmful in nature, others are beneficial.

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Plants (such as phytoplanktonalgae, seagrass, salt marsh and mangroves) take up nutrients, which are then eaten by animals. When the plants and animals die and decompose, the nutrients are released again. Organisms such as fish and birds transfer nutrients as they move in and out of the estuary.

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Scientific Names Scientists use a two-name system called a Binomial Naming System. Scientists name animals and plants using the system that describes the genus and species of the organism. The first word is the genus and the second is the species. The first word is capitalized and the second is not.

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Biologist classify organisms by considering similarities between them. The organisms which have closely related characteristics are placed in a separate domains by biologists. Domains are further divided into 6 Kingdoms. According to modern classification system, domain is largest unit of biological classification.

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