MCQ
Closed circulatory system occurs in:
- ASnail.
- BCockroach.
- ✓Cuttle fish.
- DAll of these.
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$II.$ $p CO _{2}$ is low and $p O _{2}$ is high in tissues
$III.$ $RBC$ contains a very high concentration of carbonic anhydrase
$IV.$ Every $100\; mL$ of deoxygenated blood delivers approximately $4\; mL$ of $CO _{2}$ to alveoli
Select the combination of right statements
Light band Dark band $H$-zone