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Below are drawings of some organisms belonging to the same phylum. Examine them carefully. a) i) Name the phylum to which the organism represented by the...

      

Below are drawings of some organisms belonging to the same phylum. Examine them carefully.
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a) i) Name the phylum to which the organism represented by the drawings belong.
ii) Give two reasons for answer in a(i) above.
b) Using the features in the order given below, construct a dichotomous key that can be used to identify the specimens.
- Presence or absence of wings.
- Shape of the body
- Length of antennae
- Type of wings
- Number of wings.

  

Answers


sharon
a) i) Athropoda;
ii) Jointed legs / jointed appendages;
- Segmented body ;
b)
1. a) Wings present . . . . . . . . . . . . . .go to 4;
b) Wings absent . . . . . . . . . . . . . . . go to 2;
2. a) Body dorso-ventrally flattened . . . go to 3;
b) Body laterally flattened . . . . siphonoptera;
3. a) Long antennae . . . . . . . Anopura;
b) Short antennae . . . . . . . . Anopoura;
4. a) Hardened wings . . . . . . . . .Coleoptera;
b) Membranous wings . . . . . go to 5;
5. a) Two pairs of wings . . . . . . Odonata;
b) One pair of wings . . . . . . . Diptera;
sharon kalunda answered the question on May 23, 2019 at 13:29


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