Download pdf - Worksheet 3.9 Branching keys Student:

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Branching keysStudent: _____________________________

Whenplantsgrowinsoilsthataredeficientinvariouselements,theyshowsymptomsofdeficiencydisease.Usethefollowingbranchingkeytoanswerthequestions.

1. Whichelementsaretheseplantslacking?

(a) Plantshavemottledleaveswithsmalldeadspotsatthetipsofthelower,olderleavesonly. ......................................................................................................................................................(b) Plantleavesareyellowbutnotwiltedandhavenodeadspots;theterminalbudishealthy;

therearedarkgreenveinsonsomeleaves. ......................................................................................................................................................

2. Describethedeficiencysymptomsforplantsthatsufferfromalackof:(a) Boron........................................................................................................................................... ......................................................................................................................................................(b) Magnesium.................................................................................................................................. ......................................................................................................................................................

Worksheet 3.9


Tabular keys 1. Fingerprints

Usetheclassificationkeybelowtoidentifythefingerprintpatterns(VtoZ)illustrated.

V:...............................

W:....................................

X:............................................

Y:..................................................

Z:...............................................

Key:1A. Ridgesformarisingandfallingpatternfromlefttoright...............................goto21B. Ridgesdonotformarisingorfallingpatternfromlefttoright......................goto3

2A. Ridgepatternmakesagentlerisefromlefttoright...................................plainarch2B. Ridgepatternundergoesasteeprisefromlefttoright..........................tentedarch

3A. Ridgepatterniscircular.....................................................................................whorl3B. Ridgepatternisnotcircular.............................................................................goto4

4A. Ridgepatternchangesdirectiononceandreturnsbackward...................singleloop4B. RidgepatternchangesdirectiontwicetoformanSshape.....................doubleloop

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rfo/1

23R

F

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RF

ã C

reat

ive

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s

ã A

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to R

igam

onti/

123R

F

ã J

oao

Este

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Frei

tas/

123R

F

Worksheet 3.10


2. ShapesDevelopaclassificationkey(liketheoneinthefingerprintactivity)toclassifytheshapesshowninthediagramsbelow.

Worksheet 3.10