Dichotomas Keys uwu Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

A key is a tool used to _______________ organisms based on their ________________/ __________________ features. A ________________________ is a common type of key.

A

Identify, structural, physical, dichotomous

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

A dichotomous key provides a __________________________________________ at each step. By choosing one of the two features, the organisms can be identified ______________________.

A

Pair of contrasting features

Step by step

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

How to construct a dichotomous key

  1. _____________ the organisms to be identified
  2. _____________ some ______________ ___________ that are different among the organisms to be identified
  3. _____________ one pair of ____________________ _______________ to divide the organisms into two groups
  4. For each group, choose another ___________ to further divide the organisms into two groups.
  5. Repeat step ______ until all the organisms are sorted.
  6. Draw a line from the __________________________________________ from the rest and write down the name of the organism
A

Fix, list, structural features
Choose, contrasting features, feature
4, last feature that distinguished an organism

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

When constructing a good dichotomous key, we should __________________ the physical structural features of organisms, ____________ features that _____________________________ and avoid _______________________ that cannot always ________________________

A

Consider
Avoid, change over time
Internal features, be seen externally

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Two types of dichotomous keys:

  1. _____________________ _______
  2. _____________________ _______
A

Branch-type key, paired-statement key

How well did you know this?
1
Not at all
2
3
4
5
Perfectly