Download Bio 1407 Insect Mouthparts

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Insect Mouthparts
Here is a closeup of a grasshopper's mouthparts. You can see how ancestral
appendages (legs) have
been modified by natural selection to the function of food processing. The
ancestral segments that held
these appendages have fused to form the grasshopper's head. The front
mouthparts, once appendages
on the left and right side, have also fused together to form central flaps
(the CLYPEUS and the
LABRUM) to hold the food in place while it is chewed and swallowed. This is a
good example of
EXAPTATION, the use of pre-existing body parts with one function as raw
material for the
evolutionary development of new functions.
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1. Science
Bio 1407 Insect Mouthparts.doc
The Camponotus species of South Eastern United States
Leptogenys
1 TEST 1 MODULE: FUNDAMENTALS OF PLANT PROTECTION
Labidus
Key to New World Platythyrea Species
Innovation in biology and technology: exaptation precedes
Technology Creeps and Leaps
as - Philosophy in Action
Other Concepts of Species Speciation: Plants Autopolyploid
Chapter 14 Study Guide
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