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NTA Abhyas NEET2020BotanyAnimal KingdomPractice

Identify the correct statement.

Options

  1. AAll vertebrates are chordates but all chordates are not vertebrates.
  2. BAll craniates are vertebrates but all vertebrates are not craniates.
  3. CAll flatworms possess metamerism but all metamerically segmented organisms are not flatworms
  4. DAll are correct.

Correct answer

A. All vertebrates are chordates but all chordates are not vertebrates.

Step-by-step solution

The main difference between chordates and vertebrates is that some chordates do not have a vertebral column whereas all vertebrates have a vertebral column. Hence, all vertebrates are chordates but all chordates are not vertebrates. All craniates are vertebrates and also all vertebrates are craniates. All flatworms possess metamerism but all metamerically segmented organisms are not flatworms because the segmented worms belong to Annelida and have metameric segmentation.

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