What do you understand about Torsion and Detorsion in Mollusca? Elucidate. (UPSC 2019, 15 Marks, )

आप मोलस्का में टॉर्शन और डिटॉर्शन के बारे में क्या समझते हैं? स्पष्ट करें। (What do you understand about Torsion and Detorsion in Mollusca? Elucidate.)

What do you understand about Torsion and Detorsion in Mollusca? Elucidate. (UPSC 2019, 15 Marks, ) EN ह function dochangelang(val) { if (val != "") { window.location = val; } }

What do you understand about Torsion and Detorsion in Mollusca? Elucidate. (UPSC 2019, 15 Marks, )