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Biology Chapter 2: Biological Classification

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Biology Chapter 2: Biological Classification

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Questions and Answers

What was a main criteria for classification used by R.H. Whittaker in his Five Kingdom Classification?

Cell type, nuclear membrane, mode of nutrition, habitat and methods of reproduction

Gross morphology, nature of the species, habitat, methods of reproduction, evolutionary relationships

Cell structure, body organisation, mode of nutrition, reproduction and phylogenetic relationships (correct)

Cell type, cell wall, mode of nutrition, habitat and evolutionary relationships

Which domain system proposed the division of the Kingdom Monera into two domains?

Four-domain system

Six-domain system

Five-domain system

Three-domain system (correct)

What unified the 'Plants' kingdom in earlier classification systems?

Habitat and methods of reproduction

Presence of a cell wall in their cells (correct)

Similar cell structure

Similar mode of nutrition

What were the main characteristics considered for classifying organisms into the Five Kingdoms according to Table 2.1?

Cell structure, body organisation, mode of nutrition, reproduction and phylogenetic relationships Signup and view all the answers

What did R.H. Whittaker name the five kingdoms he proposed in his classification system?

Monera, Protista, Fungi, Plantae and Animalia Signup and view all the answers

What is an example of a characteristic that unified the 'Plants' kingdom in earlier classification systems?

Presence of a cell wall in their cells Signup and view all the answers

What was a constant under all different classification systems?

'Plant' and 'Animal' kingdoms Signup and view all the answers

'Monera' was divided into which two domains in the three-domain system?

'Archaea' and 'Bacteria' Signup and view all the answers

'Monera', 'Protista', 'Fungi', 'Plantae', and 'Animalia' are examples of what?

'Kingdoms' Signup and view all the answers

'Chlam' is an example of which kind of organisms?

'Multicellular' Signup and view all the answers

What was the primary motivation behind the early classification of living organisms?

To categorize organisms for human use like food, shelter, and clothing Signup and view all the answers

Why was Aristotle's classification system not considered scientific?

It was not based on scientific criteria but on instinctive needs Signup and view all the answers

What was the limitation of the Two Kingdom system of classification developed in Linnaeus' time?

It included all plants and animals but did not classify other organisms Signup and view all the answers

Why was the Two Kingdom system found inadequate over time?

It could not accommodate a large number of organisms beyond plants and animals Signup and view all the answers

What did Linnaeus' Two Kingdom system fail to distinguish between?

Eukaryotes and prokaryotes Signup and view all the answers

What was the earliest basis for classification used by Aristotle for plants and animals?

Simple morphological characters like trees, shrubs, and herbs Signup and view all the answers