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miskamm [114]
3 years ago
10

How does a dichotomous key help you identify unknown specimens based on their traits? Answer with details about the format and s

tructure of a dichotomous key.
Biology
2 answers:
Fudgin [204]3 years ago
6 0

It has a series of questions.

The questions use a simple yes/no format.

It is based on observable traits.

It allows you to focus on key features.

Each question leads to another in a logical, ordered way.

You always start at the same place.

Aneli [31]3 years ago
4 0
A dichotomous key helps you identify unknown specimens based on their traits because there are only two options available per trait. Selecting one from the two options (usually contrasting characteristics) from each step leads to smaller and smaller groups until the option is reduced to single and unique trait of an organism.

Considering you need to identify an organism. So, on the top of they key is animal with options: (a) with red blood cells and (b) no red blood cells. The option you will select is no red blood cells and under option b, you’re given two choices again: (a) hard bodies and (b) soft bodies. You’ll select soft bodies, then two options again are given: (a) with shell and (b) without shell. The option you’ll select would be without shell, and so on.
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