MCQ
The difference between systolic and diastolic pressure in human is
- A$120\; mm\; Hg$
- B$80\; mm\; Hg$
- ✓$40\; mm\; Hg$
- D$200\; mm\; Hg$
Diastolic blood pressure $=80\; mm\; Hg$
$\therefore$ Difference between systolic and diastolic blood pressure
$=120-80=40\; mm\; Hg$
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$X-Y-Z$
Assertion $(A)$:All vertebrates are chordates but all chordates are not vertebrates.
Reason $(R)$:Notochord is replaced by vertebral column in the adult vertebrates.
In the light of the above statements, choose the most appropriate answer from the options given below:
