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 Science; INVESTIGATION 9

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erroruntalan
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PostSubject: Science; INVESTIGATION 9   Tue Mar 16, 2010 7:43 pm

The Spiders (Arachnida), Centipedes (Chilopoda), and Millipedes (Diplopoda)

1. Body Division
-three(3) body division: Head, Thorax and Abdomen

Number of jointed appendages
-six(6) pairs

Body Covering
-is covered by chitinous exoskeleton

Antennae
-movable segmented organ of sensation of the head

2. Body division
-Head, thorax and abdomen

Number of jointed appendages
-four(4) pairs in arachnid (spider) = 8
-fifteen(15) pairs in chilopoda (Centipede) = 30

Body Covering
-chitinous material

3. Spider- jung books
Centipede- tracheal tubes

Application

1. Spinnerets- secretes silk thread for the web

Spiracles
-respiratory organs with openings anterior to the anus

Malpighian tubules
-excretory organs of myriapods

Pedipalpi
-used as jaw; the male - they are used as an organ for transferring the sperm cell to female

Poison fang
-it is where the poison is located, it is the one injected to a prey

2. Spiders- they're poisonous when they bit people/ person/ human/ living organ

Scorpions
-also poisonous

Centipedes
-also poisonous

Mites
-infest animal/ plans stored food

Ticks
-sucks blood

----------------------------------------------End-----------------------------
Source: (Direct source from the author)erroruntalan

sana po makatulong ito... thanks... Smile
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PostSubject: Re: Science; INVESTIGATION 9   Wed Mar 17, 2010 8:04 am

sipaggggggggggggg................................
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Science; INVESTIGATION 9
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