Chapter 36 Arthropods & Chapter 37 Insects. “The real rulers of the Earth”. Sources used include textbook, (Holt Modern Biology) h ttp://www.ucmp.berkeley.edu/arthropoda/arthropoda.html. http://evolution.berkeley.edu/evolibrary/article/_0_0/arthropods_intro_01.
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“The real rulers of the Earth”
Sources used include textbook, (Holt Modern Biology)
shed. It takes a few
days for the newly
larval stage called a nauplius.
Fangs and Chelicerae of Tarantula SpiderlingBrachypelma smithi(Mexican Red-Knee Tarantula)
Fangs, Chelicerae of Zebra Jumping SpiderSalticus scenicus
** Mites and ticks differ from spiders because they
have a fused cephalothorax and abdomen.
Nervous & Sensory Organs
Head -has mandibles and one pair of unbranched antennae.
Thorax -has three pairs of jointed legs and, in many species, one or two pairs of wings.
Abdomen -has 9 to 11 segments but neither wings nor legs in adults.
-allows larvae and adults of the same species to avoid competing
for space and food.
-allows survival in periods of harsh weather or scant resources.