NEET 2024 Biological Classification One Shot | Class-11 Biology.
Dr. Rakshita Singh・2 minutes read
The text discusses the historical development of biological classification, from Aristotle's external characteristics-based system to Rh Whittaker's Five Kingdom classification focusing on cell structure and evolutionary relationships. It also delves into the characteristics, habitat, reproduction, and ecological roles of bacteria, protozoa, fungi, and viruses.
Insights
- Historical development of biological classification began with Aristotle's need for categorization based on external characteristics like trees, herbs, and shrubs, leading to Linnaeus's introduction of two kingdoms, plants, and animals, ultimately evolving into the Five Kingdom classification by RH Whittaker in 1969, emphasizing cell structure, nutrition, reproduction, and phylogenetic relationships.
- Bacteria, a crucial component of the Monera kingdom, exhibit extensive metabolic diversity, with classifications based on shapes like coccus, bacillus, spirillum, and comma-shaped, playing essential roles in processes like nitrogen fixation, decomposition, and antibiotic production, while being responsible for diseases like cholera, typhoid, and tetanus.
- Fungi, classified based on spores and fruiting bodies like eco mycity, besio mycity, and duto mycity, showcase diverse reproduction methods like ascospores and basidiospores, with examples including Alternaria, Trichoderma, Mucor, and Rhizopus, highlighting their roles as saprophytes, parasites, and decomposers in various habitats.
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Recent questions
What are the Five Kingdoms of classification?
Monera, Protista, Fungi, Plantae, Animalia
How do bacteria reproduce?
Fusion and fission with spore formation
What are the characteristics of Protozoa?
Parasites and predators with cilia for movement
How do fungi reproduce?
Vegetative, asexual, and sexual methods
What are the characteristics of viruses?
Non-cellular with DNA or RNA and protein coat
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