Trap Jaw Ants Have Modified Mandibles That Function Like a Bear

question 21

Multiple Choice

Trap jaw ants have modified mandibles that function like a bear trap-when a potential prey item triggers the jaw, it snaps shut with amazing speed (up to 145 mph) . The groups highlighted in the phylogeny below include species that have evolved trap jaws. With reference to this tree it appears that

• A) the trap jaw could be a homologous trait for Formicinae and Ponerinae.
• B) the trap jaw is homoplasious (analogous) for Myrmicinae and Ponerinae.
• C) the trap jaw is homoplasious (analogous) for Odontomachus and Myrmoteras.
• D) a and c
• E) b and c

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