Identification: Yellow leaves on top

Can someone help me identify what kind and name of my plant? It's also turning yellow on top, is it dying or might have a rotten root? Please help save my plant. Thanks.

 

Looks like Beaucarnea recurvata, Ponytail.

 

Thanks for your reply! I agree it's a ponytail :)

 

I'm worried my plant is dying coz of the top are turning yellow..someone please give me an advice? Thanks.

 

Does that pot have a drain hole? If not, the culprit is likely that the roots are sitting in water. I'd recommend getting a proper pot with a drainage hole (and a plastic saucer so you don't ruin your floors) and transplanting it.

 

thanks Pirhan! I will follow your advice. I hope my plant will survive. thanks again!