Classification of Plants — Flashcards

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Classification is the system of grouping living organisms into groups based on similarities and differences. It makes the study of living things easier and more systematic.

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There are so many living organisms that they cannot be studied one by one easily. Classification helps by grouping similar organisms together, so their common features can be understood more quickly.

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Classification helps in understanding the characteristics of a group, makes study systematic, helps in identifying organisms, and gives an idea about evolution from simpler to more complex forms.

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Robert Whittaker proposed the five kingdom classification in 1969. He suggested that bacteria should not be placed under plants and protozoans should not be placed under animals.

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The two-kingdom system had anomalies. Some organisms did not fit properly, such as bacteria, which were grouped with plants, and protozoans, which were grouped with animals. Euglena also showed both p…

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Euglena contains chlorophyll like plants, but it does not have a cellulose cell wall. It also has an eye-spot like structure like animals. Because of these mixed features, it is placed in Kingdom Prot…

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Kingdom Monera includes microscopic, unicellular organisms with a cell wall but no true nucleus. Their genetic material lies in a nucleoid. Bacteria belong to this kingdom.

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Bacteria are called prokaryotes because the nuclear membrane is absent. Their genetic material is not enclosed in a true nucleus and lies in a nucleoid.