TwentyEleven – Hide/remove page title

Hi,
Having problems with the titles on my pages, for some reason the titles are a larger font size on the other pages compared to my index page. This is not a problem really as I would like to remove the page titles from each page except the index page.

I would also like to hide/remove the Reply button on my index page. Not even sure where it came from, it appeared after I deleted the speech bubble comment button.

My blog address is : https://www.kirstiebenbow.co.uk

Many thanks in advance.