Transcript Branching Keys - Noadswood Science

Branching Keys
D. Crowley, 2008
Branching Keys
 To be able to design and use branching keys
Naming
 Complete the naming
worksheet
Naming
1.
2.
3.
4.
5.
6.
7.
8.
9.
Plants, animals, monera (bacteria), fungi, protoctists
Phyla (single = phlum)
Invertebrates
Humans belong to Animal (kingdom) – Vertebrate
(phylum) – Mammals (class)
Classification makes it easier to identify an organism from
its features
Genus = Homo
Carl Linnaeus
Genus always has a capital letter and the species a small
one (both are written in italics
Homo means man; sapiens means wise
Keys
 Keys are used to identify creatures – it involves a series of
questions which have two possible answers
 The two answers divide the group into two parts (leading onto
further questions)
Do you have 2 legs?
Yes
Do you have fur?
No
Are You A Dolphin?
Human
Porcupine
Panther
Dolphin
Panda
Perennial
1
Do you have spikes on you skin? ……….. YES, then you’re a porcupine
……….. NO – go to question 2
2
Do you have green leaves?
……….. YES, then you’re a perennial plant
……….. NO – go to question 3
3
Do you eat bamboo?
……….. YES, then you’re a panda
……….. NO – go to question 4
4
Do you have four legs ?
……….. YES, then you’re a panther
……….. NO – go to question 5
5
Do you squeak and eat fish?
……….. YES, then you’re a dolphin
……….. NO – then you’re a human
Branching Key
 Complete the branching key
worksheet
Branching Keys
 The first cow is a Russian black pied
 The second cow is a highland
 The first dinosaur is a Gallimimus
 The second dinosaur is a Tyrannosaurus rex
 Your alien invasion should include differences based on
neck length; number of legs; and size of eyes – e.g. “do you
have 4 legs?”
The five main groups of vertebrate animals are:
fish
amphibians
reptiles
birds
mammals
Which sentence below is true?
All vertebrates
breathe with lungs.
All vertebrates
have four legs.
All vertebrates
have a backbone.
All vertebrates
live on land.
Megatherium was a large
mammal. It is now extinct.
The drawing shows what
scientists think Megatherium
looked like.
(i)
How can you tell, from the drawing, that Megatherium was a mammal?
.................................................................................................................
(ii) Give one other way that mammals are different from other vertebrate animals.
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The drawing shows a frog.
(i)
To which group of vertebrates does the frog belong?
.................................................................................................................
(ii) Give one way the frog is adapted for jumping.
.................................................................................................................
(iii) Give one way the frog is adapted for moving about in water.
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