Can I buy a life insurance policy on my mother without her knowing it?

My husband and myself has AARP life insurance polices on us..I have crohns disease and my husband has COPD and degenerative disk disease , and they have insurance on us.They don,t or didn,t ask us any questions.I have a 14,000 each on us,it cost 37.00 per month each,but $10,000 is plenty to bury someone.You could probably take one out on her,but I don,t know if you could do it without her knowledge unless you signed her name,but it is well worth it because its going to fall on you and other siblings if she don,t have insurance .If you do this then make yourself beneficiary,so you can bury her.....yes you will need her date of birth and her SS# but you should be able to get that from her without her knowing why...