RPSC RAS (Rajasthan) Exam > RPSC RAS (Rajasthan) Notes > RAS RPSC Prelims Preparation - Notes, Study Material & Tests > Chapter 1. Biologists and Their Contribution; Classification of Animals - Biology, Civil Services
Chapter 1. Biologists and Their Contribution; Classification of Animals - Biology, Civil Services | RAS RPSC Prelims Preparation - Notes, Study Material & Tests - RPSC RAS (Rajasthan) PDF Download
Biologists & Their Contribution
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Coined the term ‘cell’ |
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Robert Hooke |
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Binomial nomenclature |
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Carolus Linnaeus |
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One gene one enzyme hypthesis |
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Beadle & Tatum |
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Operon Concept |
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Jacob & Monod |
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Jumping Genes concept |
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Dr. McClintock |
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Human Blood Groups |
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Karl Landsteiner |
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Fluid Mosaic Model |
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Singer & Nicholson |
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Classification of Animals |
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Types of Invertebrates |
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Placozoa |
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Single species identified as Trichoplax adherens. |
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Porifera |
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Sponges |
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Coelenterata |
Coral, hydra, jellyfish, Portuguese man-of-war, sea anemone |
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(cnidaria) |
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Platyhelminthes |
Flatworms, flukes, tapeworms |
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Nematoda or |
Ascarids, vinegar eels, cyst nematodes, Pinworms, roundworms hookworms |
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Aschelminthes |
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Annelida |
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Lugworms, earthworms, leeches |
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Arthropoda |
Crustaceans: prawn, shrimp |
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Insects: butterfly, housefly, mosquito, cockroach |
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Arachnids: Scorpion, wolf spider, King Crab |
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Myriapods: Centipede, Millipede |
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Mollusca |
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Chitons, oysters, snails, clams, squid |
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Echinodermata |
Star fish, brittle stars, sea urchins, sand dollars, sea cucumbers |
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Chordata |
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Divided into Hemichordata (tongue worm), Urochordata, Cephalanchordata, |
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Gnathastomata. |
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Types of Vertebrates |
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Jawless fishes (Agnatha) |
Hagfish, lamprey |
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Cartilaginous fishes |
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Sharks, skates, rays, chimaeras |
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Bony fishes |
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Sturgeon, herring, salmon, perch, cod, coelacanth |
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Amphibians |
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Frogs and toads, salamanders, newts, caecilians |
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Reptiles |
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Snakes, crocodiles, alligators, lizards, turtles, tortoises |
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Birds (Aves) |
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Penguin, flamingo, eagle, turkey, thrush, parrot |
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Mammals |
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Platypus, kangaroo, bat, lion, wolf, mouse, seal, antelope, cow, dolphin, |
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whale, lemur, monkey, ape, human |
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The document Chapter 1. Biologists and Their Contribution; Classification of Animals - Biology, Civil Services | RAS RPSC Prelims Preparation - Notes, Study Material & Tests - RPSC RAS (Rajasthan) is a part of the RPSC RAS (Rajasthan) Course RAS RPSC Prelims Preparation - Notes, Study Material & Tests.
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FAQs on Chapter 1. Biologists and Their Contribution; Classification of Animals - Biology, Civil Services - RAS RPSC Prelims Preparation - Notes, Study Material & Tests - RPSC RAS (Rajasthan)
| 1. What is the role of biologists in the field of animal classification? |  |
Ans. Biologists play a crucial role in the field of animal classification. They study the different characteristics, behaviors, and traits of animals to classify them into different groups and species. By analyzing the physical features, genetic information, and evolutionary history of animals, biologists can determine their relationships and create classification systems that help in understanding the diversity of animal life.
| 2. How do biologists contribute to the field of biology? | |
Ans. Biologists contribute to the field of biology by conducting research, collecting data, and studying various aspects of living organisms. They explore the structure, function, behavior, and evolution of animals, plants, and microorganisms, providing valuable insights into the natural world. Biologists also contribute to the development of new technologies, conservation efforts, and the understanding of diseases and their treatments.
| 3. What is the significance of animal classification in biology? | |
Ans. Animal classification is significant in biology as it helps in organizing and understanding the diverse range of animal species. By classifying animals into different groups based on shared characteristics, scientists can identify patterns, study evolutionary relationships, and make predictions about the traits and behaviors of different species. Animal classification also provides a framework for further research and contributes to the conservation and management of biodiversity.
| 4. What are the different levels of animal classification? | |
Ans. Animal classification involves several hierarchical levels, including kingdom, phylum, class, order, family, genus, and species. These levels are arranged in a hierarchical system called taxonomy. Starting from broad categories like kingdom, such as Animalia, organisms are successively divided into more specific groups based on their characteristics. For example, humans are classified as follows: Kingdom - Animalia, Phylum - Chordata, Class - Mammalia, Order - Primates, Family - Hominidae, Genus - Homo, Species - Homo sapiens.
| 5. How does animal classification contribute to our understanding of biodiversity? | |
Ans. Animal classification contributes to our understanding of biodiversity by providing a systematic framework to study and organize the immense variety of animal species. It helps in identifying and naming new species, determining their evolutionary relationships, and predicting their characteristics based on shared traits. By studying the classification of animals, scientists can assess the distribution, abundance, and conservation status of different species, leading to better management and preservation of biodiversity.
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