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Test: Classification Systems (NCERT) - NEET MCQ


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10 Questions MCQ Test Biology Class 11 - Test: Classification Systems (NCERT)

Test: Classification Systems (NCERT) for NEET 2024 is part of Biology Class 11 preparation. The Test: Classification Systems (NCERT) questions and answers have been prepared according to the NEET exam syllabus.The Test: Classification Systems (NCERT) MCQs are made for NEET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Classification Systems (NCERT) below.
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Test: Classification Systems (NCERT) - Question 1

Why were the earliest classification systems considered artificial?

Detailed Solution for Test: Classification Systems (NCERT) - Question 1

The earliest classification systems were considered artificial because they often separated closely related species due to their reliance on only a few characteristics.

Test: Classification Systems (NCERT) - Question 2

Artificial systems of classification were based upon

Detailed Solution for Test: Classification Systems (NCERT) - Question 2

Artificial systems of classification were based upon morphological characters (such as habit, habitat, colour, number and shape of leaves, etc.) for grouping of organisms, They were mainly based on vegetative characters or on the androecium structure. These systems separated the closely related species since they were based only on a few characteristics. This was not acceptable because vegetative characters are more easily affected by environment.

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Test: Classification Systems (NCERT) - Question 3

______ systems of classification were based on natural affinities among the organisms.

Detailed Solution for Test: Classification Systems (NCERT) - Question 3

Natural system of classification takes into consideration comparable study of number of characters so as to bring out natural similarities and dissimilarities and hence natural relationships among the organisms. They include morphological characters, anatomical characters, cytological characters, physiology, ontogeny or development, reproduction, cytochemistry and biochemistry, experimental taxonomy, etc.

Test: Classification Systems (NCERT) - Question 4

Match Column-I with Column-II and select the correct option from the codes given below.
Column-I
(A) Artificial system of classification
(B) Natural system of classification
(C) Phylogenetic system of classification
Column-II
(i) Bentham and hooker
(ii) Linnaeus
(iii) Englar and Prantl

Detailed Solution for Test: Classification Systems (NCERT) - Question 4

Artificial System of Classification

  • This system of classification was proposed by Carl Linnaeus.
  • It was based on artificial, superficial characters like habit, colour, number and form of leaves.

Natural System of Classification

  • The natural system of classification was proposed by George Bentham and Joseph Dalton Hooker.
  • This system was based on natural characters of the organisms, including external and internal structure, and structure of cell, development process and ecological information of organisms.

Phylogenetic System of Classification

  • The phylogenetic system of classification was proposed by Adolf Engler and Karl Prantl.
  • This system is based on the evolutionary sequence of the plants as well as their genetic relationships.

So, the correct match is A-(ii), B-(i), C-(iii).

Test: Classification Systems (NCERT) - Question 5

Select the incorrect pair.

Detailed Solution for Test: Classification Systems (NCERT) - Question 5

The incorrect pair in your given list is: C: Chemotaxonomy - Chromosome number and structure

Here's the detail explanation:

  • Chemotaxonomy is a branch of taxonomy that uses the chemical constitution of a plant or animal in order to identify and classify it. It doesn't deal with chromosome number and structure. Chemotaxonomy involves the study of the chemical substances produced by plants, which often includes secondary metabolites that may not be directly involved in growth, development or reproduction. 
  • On the other hand, the study of chromosome number and structure falls under Cytotaxonomy. Cytotaxonomy is the branch of taxonomy that uses the characteristics of the structure, number and behavior of chromosomes to classify organisms.

The pairing of Chemotaxonomy and chromosome number and structure is therefore incorrect, because these two concepts are associated with different branches of taxonomy.

Test: Classification Systems (NCERT) - Question 6

What is the basis of modern phylogenetic classification systems?

Detailed Solution for Test: Classification Systems (NCERT) - Question 6

Modern phylogenetic classification systems are based on evolutionary relationships between organisms, assuming that organisms within the same taxa have a common ancestor.

Test: Classification Systems (NCERT) - Question 7

 Artificial classification of plant kingdom is based on _______

Detailed Solution for Test: Classification Systems (NCERT) - Question 7

Artificial classification is based on morphological structures of the plant i.e. artificial classification focuses on external structure of the plants than their internal structure.
Hence the correct option is "A"

Test: Classification Systems (NCERT) - Question 8

Why is considering internal features like ultrastructure important in classification?

Detailed Solution for Test: Classification Systems (NCERT) - Question 8

Considering internal features like ultrastructure is important because they help determine the natural affinities among organisms, which is crucial in classification.

Understanding Natural Affinities

  • The ultrastructure of an organism can help in determining its natural affinities. This means that by examining the internal structures of different organisms, we can understand their inherent relationships with each other. These relationships are often based on shared structural features, which indicate a common ancestry or evolutionary path.
Test: Classification Systems (NCERT) - Question 9

Natural system of classification differs from artificial system in

Detailed Solution for Test: Classification Systems (NCERT) - Question 9

The natural system of classification differs from an artificial system in bringing out similarities and dissimilarities. The natural system of classification takes into account a study of a number of characters among the organisms. It brings out natural similarities and dissimilarities between organisms. It takes into consideration the natural relationships among the organisms. It considers characters that are relatively constant.

Test: Classification Systems (NCERT) - Question 10

Each character is given equal importance and at the same time hundreds of characters can be considered in 

Detailed Solution for Test: Classification Systems (NCERT) - Question 10

Numerical taxonomy evaluates resemblances and differences or primitiveness and advancement through statistical methods based on a large number of characters obtained from all disciplines of biology. This is followed by assigning them number and code of computer like plus (+) minus (-) followed by computer analysis.

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