Constitutional Law Ka Ye Koi Naya Concept Nahi Hai?

Main 24 ghante bachi hui hai aur main abhi bhi yeh samajh nahi pa raha hoon ki kabhi bhi President ne Lok Sabha ke koi bhi pratinidhi ko Rajya Sabha ke paas kis tarah se mandati de sakte hain. Mere teacher ne bola ki bas yeh Article 75 ki section 3 ki baat hai ki unhe mandati de sakte hain, par kya yeh sach hai? Maine to bahut saari books padhi hain, par main abhi bhi yeh samajh nahi pa raha hoon ki kaise lagta hai. Kaun si visheshta hai jiske karan yeh mandati hoti hai? Main to khud ko tareekh se pehle ka student lag raha hoon.