Background Info Dichotomous keys can be used to help identify and classify a set of unfamiliar organisms. In a dichotomous key, paired statements offer choices about the presence or absence of characteristics. Background Info Dichotomous keys can be used to help identify and classify a set of unfamiliar organisms. In a dichotomous key, paired statements offer choices about the presence or absence of characteristics. Purpose To we a dichotomeus key to dassify fish beloeging to the timnomic dass Ohondrirthyes asd te opestrux a dichotomous key to dasuly intect. Procedure - Part A 1) Pefer to Figure 1 to help you becume familiar wiah the bedy structures of arelapious fos fiah without a boty skeletsa). This will help you use the dichotomous key later on. 2) Carefully examine the images of eanilizginous fah in " Part A of your obiervations pagy. 3) Use the dichotismoes key (Tahle 1) te ideabty each of the siv artilygines fish skewn in the Part A Obiervations (Figure 2.7). - Start by reading step (i) of the dichotomous bey - Chose which of the tuo statements in step fof best applies to fah you ane trying te identify - Follow the "Ge to" initruations that match your dhosent stanement - Continue making cboices until yoa have identibed the fah 4) Recont the order asd species name of each fith in the talle peonided (Table 21 . 5]. Repest stepw 3 and 4 for each of the remaining fish.Table 2 - 5pecies ldentification Mevults [7 marks A] Part A= Analysas Questions 2) Hew de mentern of arder Myapbatifurmes difier trem menbers af arder Selathes [t maek 7) reaseaine. [2 marks 7] itiagev? Eylein why er why pit. [2 marka T]Procedure - Part B 1) Eamine the images pravided in Part B of the observabions page. 2) Create a creative binomial species aame for each spedimen. frecond this information in Tahle 3 . 3) On a lined piece of pager, create a didhotoenous kry that eould be ised to ilenity eadh roeder: (Figure 8-13) in Part 8 of the observations, Make sure to set ap your dichotomoes key ao that in is organized and rasy to follow. [3 marks [6 marks A] 4) Exchange your dichotomous key with a partaer and try te vese each other's krys ta gnogerty identify the species aceording the names assegned to the species by your partier. Table 4 - Species Names [ 3 marks C] Part B - Analysis Questions 1) Exptain the process that you used to rease your dichoqomes key. Be sure to mencien ilidi characteristios of the specimens were useful for dassilying them and explain yoor raticeule. [3 murios i] 2) Hon suecesufbl was the dichoqomens key of your partane If ir was succesdul idenofy one reatea why. If it was wnswecessful, idcatify one reasen wtyy. [2 maris T]Observations - Part A Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7Observations - Part B.

1. Background Info
Dichotomous keys can be used to help identify and classify a set of unfamiliar organisms. In a
dichotomous key, paired statements offer choices about the presence or absence of
characteristics.
Background Info
Dichotomous keys can be used to help identify and classify a set of unfamiliar organisms. In a
dichotomous key, paired statements offer choices about the presence or absence of
characteristics.
Purpose To we a dichotomeus key to dassify fish beloeging to the timnomic dass Ohondrirthyes
asd te opestrux a dichotomous key to dasuly intect. Procedure - Part A 1) Pefer to Figure 1 to help
you becume familiar wiah the bedy structures of arelapious fos fiah without a boty skeletsa). This
will help you use the dichotomous key later on. 2) Carefully examine the images of eanilizginous
fah in " Part A of your obiervations pagy. 3) Use the dichotismoes key (Tahle 1) te ideabty each of
the siv artilygines fish skewn in the Part A Obiervations (Figure 2.7). - Start by reading step (i) of
the dichotomous bey - Chose which of the tuo statements in step fof best applies to fah you ane
trying te identify - Follow the "Ge to" initruations that match your dhosent stanement - Continue
making cboices until yoa have identibed the fah 4) Recont the order asd species name of each fith
in the talle peonided (Table 21 . 5]. Repest stepw 3 and 4 for each of the remaining fish.Table 2 -
5pecies ldentification Mevults [7 marks A] Part A= Analysas Questions 2) Hew de mentern of
arder Myapbatifurmes difier trem menbers af arder Selathes [t maek 7) reaseaine. [2 marks 7]
itiagev? Eylein why er why pit. [2 marka T]Procedure - Part B 1) Eamine the images pravided in
Part B of the observabions page. 2) Create a creative binomial species aame for each spedimen.
frecond this information in Tahle 3 . 3) On a lined piece of pager, create a didhotoenous kry that
eould be ised to ilenity eadh roeder: (Figure 8-13) in Part 8 of the observations, Make sure to set
ap your dichotomoes key ao that in is organized and rasy to follow. [3 marks [6 marks A] 4)
Exchange your dichotomous key with a partaer and try te vese each other's krys ta gnogerty
identify the species aceording the names assegned to the species by your partier. Table 4 -
Species Names [ 3 marks C] Part B - Analysis Questions 1) Exptain the process that you used to
rease your dichoqomes key. Be sure to mencien ilidi characteristios of the specimens were useful
for dassilying them and explain yoor raticeule. [3 murios i] 2) Hon suecesufbl was the
dichoqomens key of your partane If ir was succesdul idenofy one reatea why. If it was
wnswecessful, idcatify one reasen wtyy. [2 maris T]Observations - Part A Figure 2 Figure 3 Figure
4 Figure 5 Figure 6 Figure 7Observations - Part B