As you could see in the attached image there is a tick mark next to the attributes which had select box input. And the attributes which have text and numeric input as marked doesn't have any check box. So from this image you will know how the user interface looks when few attributes have tick mark and few doesn't.
Thanks
Finally solved this problem by removing existing check and cross icons and replacing them with a symbol. Now this symbol is showed in all types of attributes like Select, Radio, Checkbox, Text, Numeric, Date, etc. so the attribute field doesn't looks weird anymore as you can see in the above image shared by me and the present attribute looks much better which can be seen in the below attached image.
I used the following code at 4 places in attributes > function.php file.
And I deleted the existing code that links to the attribute image.
.'<a style="color:green; font-size: 15px;">ยป</a>' .' ' .' '