In an average adult, the heart pumps blood about $........... $times a minute.
- A$50$
- ✓$72$
- C$100$
- D$120$
Answer: B.
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M.C.Q.
5 Q→02Fill in the blanks :
5 Q→03True - false
5 Q→04Answer in one or two sentences each :
6 Q→05Answer the following questions :(2 MARK)
5 Q→06Match the columns appropriately :
1 Q→07Classify the following :(4 MARK)
2 Q→One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
Answer: B.
View full solution →| $Ans.$ | ||
| $1.$ Nose | $a.$ Carry oxygen rich blood to all the body parts | |
| $2.$ Windpipe | $b.$ Carry carbon dioxide rich blood back to the heart | |
| $3.$ Lungs | $c.$ Takes air down to the lungs | |
| $4.$ Veins | $d.$ Absorb oxygen from air | |
| $e$. Inhaling and exhaling |
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