The class 11 NCERT Solutions for Biology Chapter 2 Biological Classification is created by subject experts according to the latest CBSE syllabus 2018-19. Students must practice the solutions regularly to prepare effectively for their examination.
Class 11 NCERT Solutions for Biology Biological Classification
Biological Classification is very important as the earth has over 8 million species. Ever since the dawn of science, man has been trying to classify the various organisms based on many features. Aristotle classified organisms on the presence of Blood – RBCs. But eventually, this was replaced by Linnaeus’ classification. He had classified the living world into 2 kingdoms – Kingdom Plantae and Kingdom Animalia. Further advances in science led to the discovery of a whole new world of organisms- the microorganisms. And this was further followed by prokaryotes and eukaryotes. Hence there was a need for a more advanced system of classification.
Subtopics of Chapter 2 Biological Classification are here:
- Kingdom Monera
- Kingdom Protista
- Kingdom Fungi
- Kingdom Plantae
- Kingdom Animalia
- Viruses, Viroids and Lichens.
The world has over 8 million species of organisms and there are new organisms being discovered every day. Hence, a system of classification is necessary to group all the millions of species into their respective kingdoms. The chapter also talks about viruses and viroids. Technically, a virus can’t be classified as a living or a non-living organism because it possesses features of both.
For instance, it can’t replicate itself unless it is inside a host. They can also stay dormant for many years at a time and they have also been theorized to survive the vacuum of space. However, the last claim is still controversial as there is not enough evidence to validate the claim. Viruses are basically protein coats that contain genetic materials and none of the traditional cell organelles present in most other living cells. The chapter also talks about plants that are not autotrophic, meaning that they cannot produce their own food and has to rely on other sources. Some become parasites and others develop a symbiotic relationship with another organism for its nutrients.
Class 11 Biology NCERT Solutions for Chapter 2 Biological Classification
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