MCQ
Bilateral symmetry, blastopore mouth and true coelom occur in
- AEchinodermata
- BChordata
- ✓Annelida
- DPlatyhelminthes
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$I.$ Ostrich eggs
$II.$ Mycoplasma
$III.$ Bacteria
$IV.$ Human $RBCs$

$I$.Calcitonin regulates the metabolism of calcium. $II$. Oxytocin stimulates contraction of uterine muscles during birth. $III$. Grave's disease is caused by malfunctioning of adrenal gland. $IV$. $ADH$ stimulates absorption of water and increase the urine production.
$II$. $PS-II$ has more chlorophyll- $b$ than chlorophyll-a
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