What is a key?

1.	What is a key?
Answer» Key\xa0is a taxonomical aid that helps in identification of plant and animal species. These\xa0keys are\xa0based on similarities and dissimilarities in characters, generally in a pair called couplet. ... It is also useful in identification of unknown organisms.\xa0Keys are\xa0of two types- indented and bracketed\xa0keys. Keys\xa0are used to identify different species. A key will usually ask questions based on easily identifiable features of an organism.\xa0Dichotomous keys\xa0use questions to which there are only two answers. They can be presented as a table of questions, or as a branching tree of questions. Branching tree exampleThis tree could help you identify a new vertebrate. For example, if it had no fur or feathers and dry skin, you would follow the right-hand pathway at the first and second junctions, but the left-hand pathway at the third junction. This would lead you to identify the animal as a reptile.

Answer» Key\xa0is a taxonomical aid that helps in identification of plant and animal species. These\xa0keys are\xa0based on similarities and dissimilarities in characters, generally in a pair called couplet. ... It is also useful in identification of unknown organisms.\xa0Keys are\xa0of two types- indented and bracketed\xa0keys.

Keys\xa0are used to identify different species. A key will usually ask questions based on easily identifiable features of an organism.\xa0Dichotomous keys\xa0use questions to which there are only two answers. They can be presented as a table of questions, or as a branching tree of questions.

Branching tree exampleThis tree could help you identify a new vertebrate. For example, if it had no fur or feathers and dry skin, you would follow the right-hand pathway at the first and second junctions, but the left-hand pathway at the third junction. This would lead you to identify the animal as a reptile.

What is a key?

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