Types of Classification

Q. Phenetic classification of organisms is based on:

1. Observable characteristics of existing organisms
2. The ancestral lineage of existing organisms
3. Dendrogram based on DNA characteristics
4. Sexual characteristics

Q. Choose the incorrect statement about numerical taxonomy.

1. It takes into account all observable characteristics
2. Each character is given equal weightage
3. Cannot be carried out using softwares
4. Hundreds of characters can be considered at a time

Q. Choose the incorrect option about classification of plants:

1. Early humans classified plants based on utility - edible, poisonous and medicinal plants
2. Aristotle’s system of classification is based on height and girth of the plant
3. Carl Linneaus’ system of classification was based on the physical characteristics of reproductive structures of the plant
4. Bentham and Hooker’s classification was an artificial system of classification

Q. X classification system classifies organisms based on one or very few morphological features. Y classification system classifies organisms on the basis of both internal and external features. Identify X and Y.

1. X - Natural, Y - Artificial
2. X -Aristotle’s, Y - Carl Linneaus’
3. X - Artificial, Y - Natural
4. X - Carl Linneaus’, Y - Aristotle’s

Q. In Bentham and Hooker's system of classification the arrangement of three series of polypetalae reflects evolution from

1. Dichlamydeous to monochlamydeous condition
2. Apocarpy to syncarpy
3. Bisexuality of unisexuality
4. Hypogyny to epigyny

Q.

JUSTIFY THIS STATEMENT - "All vertebrates r chordates but all chordates r not vertebrates".

Q.

The plant classification proposed by Bentham and Hooker is a /an

1. Artificial system

2. Natural system

3. Phylogenetic system

4. Numerical system

Q.

all vertebrates are chordates but all chordates are not vertebrates. justify.

Q. Classification based on features like chromosome number, structure and behaviour is called

1. chemotaxonomy
2. numerical taxonomy
3. phylogeny
4. cytotaxonomy

Q. Which is the most widely accepted system of classification?

1. Artificial Classification

2. Natural Classification

3. Pureline Classification

4. Phylogenetic Classification

Q. Choose the correct combination:

1. Linnaean system of classification: Height and girth of the plant
2. Natural system of classification: Edible plants, poisonous plants and medicinal plants
3. Numerical taxonomy: Every character is given equal importance
4. Phylogenetic system of classification: Bentham and Hooker

Q. Why are the classification systems changing every now and then?