biology : class11 Artificial Classification : Importance of Classification, Basis of Classification, Advantages of Classification : Need for Classification MCQ Questions and Answers
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Artificial Classification
MCQ questions and answers.
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MCQ Questions
1. What is the main basis of an artificial classification system?
A.
A few easily observable characteristics
B.
Evolutionary relationships only
C.
DNA sequence comparisons
D.
All internal body structures
Correct Answer:
A few easily observable characteristics
Explanation:
Artificial classification groups organisms using a limited number of convenient and easily observable features.
2. Which classification system is based mainly on one or a few selected characters?
A.
Natural classification
B.
Artificial classification
C.
Phylogenetic classification
D.
Molecular classification
Correct Answer:
Artificial classification
Explanation:
Artificial classification uses one or a few selected characters rather than considering the overall similarities and relationships of organisms.
3. Who introduced an artificial system of classification for plants based mainly on the number and arrangement of stamens?
A.
Charles Darwin
B.
Carolus Linnaeus
C.
Gregor Mendel
D.
Robert Hooke
Correct Answer:
Carolus Linnaeus
Explanation:
Carolus Linnaeus proposed an artificial system of plant classification based largely on the number and arrangement of stamens.
4. In Linnaeus's artificial classification of plants, which floral feature was chiefly used?
A.
Number and arrangement of stamens
B.
Colour of leaves
C.
Size of roots
D.
Shape of fruits only
Correct Answer:
Number and arrangement of stamens
Explanation:
Linnaeus used the number and arrangement of stamens as important criteria in his artificial classification system.
5. What is a major advantage of artificial classification?
A.
It is simple and convenient to use
B.
It always shows evolutionary history
C.
It uses every characteristic of an organism
D.
It proves close relationships between all grouped organisms
Correct Answer:
It is simple and convenient to use
Explanation:
Artificial classification is useful because organisms can be grouped quickly using a few easily recognized characteristics.
6. What is a major limitation of artificial classification?
A.
It may group unrelated organisms together
B.
It is impossible to apply to plants
C.
It requires knowledge of DNA
D.
It uses too many characteristics
Correct Answer:
It may group unrelated organisms together
Explanation:
Because artificial classification relies on limited characters, organisms that are not closely related may be placed in the same group.
7. Artificial classification generally does not represent which of the following?
Explanation:
Artificial classification is based on selected features and therefore does not reliably show natural or evolutionary relationships.
8. A classification system using the habit of plants, such as herbs, shrubs, and trees, is an example of classification based on which type of character?
A.
A selected external character
B.
Chromosome number only
C.
Fossil age only
D.
Genetic sequence
Correct Answer:
A selected external character
Explanation:
Grouping plants by habit uses an easily observed external feature, which is typical of artificial classification.
9. Why can artificial classification be misleading?
A.
It may give importance to similarities that do not indicate close relationship
B.
It never uses visible features
C.
It includes only extinct organisms
D.
It cannot place organisms into groups
Correct Answer:
It may give importance to similarities that do not indicate close relationship
Explanation:
Artificial systems may emphasize a superficial similarity, causing unrelated organisms to be grouped together.
10. Which statement correctly describes artificial classification?
A.
It classifies organisms using a small number of convenient traits
B.
It classifies organisms only according to their ancestry
C.
It always considers all structural and functional features
D.
It is based exclusively on molecular evidence
Correct Answer:
It classifies organisms using a small number of convenient traits
Explanation:
The defining feature of artificial classification is the use of a few convenient and easily observable traits for grouping organisms.
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