MCQ
Mollusca is
- ATriploblastic, Acoelomate
- ✓Triploblastic, coelomate
- CDiploblastic, Acoelomate
- DDiploblastic, coelomate
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Reason : Injecting the microbes intentionally during immunisation or infectious organisms gaining access into body during natural infection induces active immunity.
$I.$ Kidneys are reddish brown and bean-shaped structure
$II.$ Kidneys are situated between the last thoracic and third lumber vertebra
$III.$ Each kidney of an adult human measures $10-12\, cm$ in length, $5-7\, cm$ in width, $2-3 \,cm$ thickness, and average weight $120-170$ $gram$