Question:
Which of the following statements is true?
Which of the following statements is true?
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Vertebrates ⊂ Chordates, but protochordates are non-vertebrate chordates.
Updated On: Jun 19, 2026
- All chordates are vertebrates but all vertebrates are not chordates
- All vertebrates are chordates but all chordates are not vertebrates
- All chordates bear jaws
- All vertebrates bear jaws
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The Correct Option is B
Solution and Explanation
Step 1: Understand chordates.
Chordates are animals having notochord at some stage of development.
Step 2: Understand vertebrates.
Vertebrates are a subgroup of chordates with vertebral column.
Step 3: Relationship.
All vertebrates belong to chordates, but all chordates (like protochordates) are not vertebrates.
Step 4: Analyze option 1.
Incorrect because reverse relationship is wrong.
Step 5: Analyze jaw statements.
Not all chordates or vertebrates possess jaws (e.g., agnatha).
Step 6: Conclusion.
Thus, option (2) is correct.
Chordates are animals having notochord at some stage of development.
Step 2: Understand vertebrates.
Vertebrates are a subgroup of chordates with vertebral column.
Step 3: Relationship.
All vertebrates belong to chordates, but all chordates (like protochordates) are not vertebrates.
Step 4: Analyze option 1.
Incorrect because reverse relationship is wrong.
Step 5: Analyze jaw statements.
Not all chordates or vertebrates possess jaws (e.g., agnatha).
Step 6: Conclusion.
Thus, option (2) is correct.
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