Why are reproductive characters given more weightage during advanced classification?

  1. Vegetative characters are more or less constant over the generation
  2. Reproductive characters are less constant over the generation
  3. Vegetative characters are easy to get affected by environment
  4. Reproductive characters are more or less constant over the generation

Concept Questions :-

Clssification System: I
Clssification System: II
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George Bentham and Joseph Hooker gave the classification based on

  1. Artificial system
  2. Natural system
  3. Phlogenetics
  4. Numerical system
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Under natural system of classification which of the following cahracter is not considered?

  1. External features
  2. Phylogeny
  3. Anatomy, Embryology
  4. Phytochemistry
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Phylogenetic classification systems based on

  1. Evolutionary relationships between the various organism
  2. Organisms belonging to the same taxa may have a different ancestor
  3. Both A and B
  4. Based on cytological information like chromosome number, structure, behavior.
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If we want to know evolutionary relationships between organisms then which classification will resolve it :

  1. Artificial classification
  2. Natural classification
  3. Cytotaxonomy
  4. Phyogenetic classification
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Numerical Taxonomy

  1. Carried out using computers
  2. Based on all observable characteristics
  3. Number and codes are assigned to all the characters
  4. All of these
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In numerical taxonomy

  1. All the characters are given equal importance
  2. All the characters are given unequal importance
  3. And at the same time, hundreds of characters can be considered
  4. Both A and C
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Cytotaxonomy

  1. Based on cytological information like chromosome number
  2. Based on cytological information like chromosome structure
  3. Based on cytological information like chromosome behavior
  4. All of these
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Chemotaxonomy

  1. Chemical constituents of the plant
  2. Cell structure
  3. Phylogeny
  4. Embryology
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Algae is not

  1. Chlorophyll-bearing
  2. Simple Thalloid
  3. Mainly Fresh water
  4. Largely Aquatic
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