guys can anyone give me the class 11 biological classification notes please i need lengthy notes
Answers
Answer:
Aristotle was the first person to explore the classification of animals. His process of classification was based on mere observation of morphological characteristics among animals. The two major groups were formed based on whether the organism had red-blood cells or did not have any red blood cells. Carolus Linnaeus introduced the Two Kingdom system of classification, namely; Plantae Kingdom and the Animalia Kingdom. This classification made it easy to classify plants and animals. However, there were some organisms that did not fit either of these categories.
R.H. Whittaker proposed the division of organisms into five main kingdoms, namely, Kingdom Monera, Protista, Fungi, Animalia, and Plantae. The criteria for classification was based on cell structure, mode of nutrition, reproduction, body organisation, and phylogenetic relationships.
Let us now take a detailed look at the kingdoms mentioned in class 11 biological classification chapter
Kingdom Monera
The bacteria which is found almost everywhere around is the only member of Kingdom Monera:
Bacteria can survive in extreme weather conditions and can be found in snowy areas, deep oceans, and hot springs. They even have the capacity of surviving on other living organisms such as parasites
The bacteria have a very simple structure. However, their behaviour is complex
They are grouped as per their shape; spherical Coccus (cocci), rod-shaped Bacillus (bacilli), comma-shaped Vibrium (vibrio), and spiral Spirillum (spirilla)
Bacteria are either autotrophic or heterotrophic. Autotrophic bacteria are capable of making their own food from inorganic substances. Heterotrophic bacteria depend on other living organisms or dead matter for food
The archaebacteria are unique bacteria due to their cell wall structure. Methanogens, a type of archaebacteria live in the gut of ruminating animals
The eubacteria ‘true-bacteria’ are single-celled prokaryotic microorganisms capable of producing their own food. Some of them play important roles like; helping milk curdle, recycling nutrients, fixing nitrogen in roots of legumes, etc.
Explanation: refer to the attached photo
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