Phylum Arthropoda pt 3

Phylum Arthropoda pt 3 - -wings used for soaking up heat...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Phylum Arthropoda pt. 3 -hexapods: insects -almost all have 2 pairs of wings and 3 pairs of legs -powered flight -hemimetabolous -adult doesn’t look that much different from nymph -and homometabolous metamorphosis -new form -different “goals” example: juvenile caterpillar eats as much as possible whereas butterfly eats enough to sustain self but constantly looks for a mate -compound eye can see in almost any direction -Straw-like mouthpiece -wings were possibly developed for thermoregulation
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: -wings used for soaking up heat from the sun-2 types of flight muscles: direct and indirect -direct: muscle contracts pull wing down-indirect: muscle is inside the thorax, contraction pulls wing up-both generate lift-malphighian tubles: function similar to kidney, must simpler however-tracheal system: canals and pathways, branch into smaller pathways-eye made of ommatidia, optic nerve-speciation rate: (ln(n)-ln2)/t //// n = number of species, t = time...
View Full Document

This note was uploaded on 11/11/2009 for the course BIS 1b taught by Professor Kimsey during the Fall '08 term at UC Davis.

Ask a homework question - tutors are online