MCQ
Sea fan belongs to
- AEchinodermata
- ✓Crinoidea
- CMollusca
- DCoelentrata
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$I.$ thermoregulation
$II.$ regulation of sexual behavior
$III.$ expression of emotional reactions (e.g., excitement, pleasure, rage and fear)
$IV.$ memory
Choose the correct option
$R$- These factors are regulate the activity of enzyme
$(I)$ Chromosome cluster at opposite spindle poles.
$(II)$ Nuclear envelope assembles around the chromosome clusters.
$(III)$ Golgi complex and $ER$ reform.