What is the difference between Indented key and Bracketed key?Plz answer this as soon as possible...

What is the difference between Indented key and Bracketed key?Plz answ

1.	What is the difference between Indented key and Bracketed key?Plz answer this as soon as possible...
Answer» \tIndented key-It is also called as\xa0yoked key\xa0is most commonly used in the filed of taxonomic study.\tIt is capable of giving\xa0visual effect\xa0of a particular group.\tIn case of indented key, the\xa0choice of couplet must maintain equal distance from left margin.\tBracketed key-In this case,\xa0numbering system must be present\xa0in choice of couplet.\tThe choices can be\xa0easily separated\xa0and this is\xa0most helpful if previous couplet is there.