Upload
mary-booker
View
215
Download
0
Tags:
Embed Size (px)
Citation preview
Separate this lab equipment into two groups using their physical properties.
Goggles Test tube holder
Bunsen burner Beaker
Biological keys
Lab equipment
Made of metal Made of non metal
Made of two different metals Made of only one metal Has a scale Has no scale
Bunsen burner Test tube holder Beaker Goggles
Biological keys
Plants
Plants with flowers Plants with out flowers
Plant with pink flowers Plant without pink flowers Plant with thick leaves Plant without thick leaves
4 3 1 2
Biological Keys – branch diagrams
Animals
Has legs Has no legs
Has 4 legs or less Has more than 4 legs Has fins Has no fins
FishHorse crab worm
Branching keys using information from a table
Pupil Hair Colour Freckles Glasses
John Black Yes Yes
Alan Black No Yes
David Brown No No
Peter Black Yes No
Biological keys
Pupils
Wears glasses No glasses
Has freckles No Freckles
John Alan
Brown hair Doesn’t have brown hair
David Peter
Organisms
Legs/no legs Shell/no shell Feelers/no feelers Varies in width/same
width Line down body/no
line down body Saddle/ no saddle
Organisms keyOrganisms
No legs Has legs
BHas feelers Has no feelers
Has a saddle Has no saddle
A E
Body same width Body varied width
Has a centre line Has no centre line D
C F
Leaves
Leaflets(A,B&F)/no leaflets
Leaflets fan shaped (B)/not fan shaped
4 pairs of leaflets (F)/more than 4 pairs of leaflets (A)
Smooth edge (D)/ no smooth edge
Lobes (C)/ no lobes Serrated edge (E &H)/ no
serrated edge
Leaves keyLeaves
Has leaflets Has no leaflets
Paired leaflets No paired leaflets
4 leaflet pairs More than 4 leaflet pairs
F A
Has lobes Has no lobes
Has smooth edge No smooth edge
D Has serrated edge Has no serrated edge
H G
B Has rounded lobes Has pointed lobes
C E
Paired Statement Keys
Paired statement keys work in the same way as branching keys.
At each stage you are given a choice.Make the appropriate choice and go to
where you are asked to go.Again, if the organism is present, you
should end up with a name for it.
Paired Statement Key1. Single leaf go to 2
Several leaflets go to 6
2. Leaf with prickles HOLLY
Leaf with no prickles go to 3
6. Leaflets in fan shape HORSE CHESTNUT
Leaflets in pairs go to 7
3. Leaf edge with lobes go to 4
Leaf edge with no lobes go to 5
4. Lobes sharp pointedSYCAMORE
Lobes rounded OAK5. Leaf with smooth edge BEECH
Leaf with serrated edge ELM
7. Leaf edge serrated ROWAN
Leaf edge plain ASH
Keys
The paired statement key is more manageable as it tends not to spread itself out as much.
The branching key is more pictorial and usually easier to use.
Try building your own keys for the following organisms. (Branching and Paired Statement!)