© John Wiley & Sons Australia, Ltd Branching keys Student: _____________________________ When plants grow in soils that are deficient in various elements, they show symptoms of deficiency disease. Use the following branching key to answer the questions. 1. Which elements are these plants lacking? (a) Plants have mottled leaves with small dead spots at the tips of the lower, older leaves only. ...................................................................................................................................................... (b) Plant leaves are yellow but not wilted and have no dead spots; the terminal bud is healthy; there are dark green veins on some leaves. ...................................................................................................................................................... 2. Describe the deficiency symptoms for plants that suffer from a lack of: (a) Boron ........................................................................................................................................... ...................................................................................................................................................... (b) Magnesium .................................................................................................................................. ...................................................................................................................................................... Worksheet 3.9
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© John Wiley & Sons Australia, Ltd
Branching keysStudent: _____________________________
Whenplantsgrowinsoilsthataredeficientinvariouselements,theyshowsymptomsofdeficiencydisease.Usethefollowingbranchingkeytoanswerthequestions.
1. Whichelementsaretheseplantslacking?
(a) Plantshavemottledleaveswithsmalldeadspotsatthetipsofthelower,olderleavesonly. ......................................................................................................................................................(b) Plantleavesareyellowbutnotwiltedandhavenodeadspots;theterminalbudishealthy;
therearedarkgreenveinsonsomeleaves. ......................................................................................................................................................
2. Describethedeficiencysymptomsforplantsthatsufferfromalackof:(a) Boron........................................................................................................................................... ......................................................................................................................................................(b) Magnesium.................................................................................................................................. ......................................................................................................................................................
Worksheet 3.9
© John Wiley & Sons Australia, Ltd
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
ã a
rfo/1
23R
F
ã A
chim
Pril
l/123
RF
ã C
reat
ive
Com
mon
s
ã A
lber
to R
igam
onti/
123R
F
ã J
oao
Este
vao
Frei
tas/
123R
F
Worksheet 3.10
© John Wiley & Sons Australia, Ltd
2. ShapesDevelopaclassificationkey(liketheoneinthefingerprintactivity)toclassifytheshapesshowninthediagramsbelow.
Worksheet 3.10
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