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33 Cards in this Set
- Front
- Back
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The most abundant, most successful animals. |
Arthropods. |
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Terminal segment of the body of an arthropod.
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Telsonis |
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Also known as cephalothroax |
Prosoma |
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The posterior portion of the body of an arthropod especially when unsegmented or when the segmentation is obscured. |
Opisthosoma |
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In merastomata, each of these are located beside a prominent spine on each side of the carapace |
A pair of large compound lateral eyes |
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Another pair of eyes in merastomata, these lie on both sides of a spine in front of |
Median eyes |
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True or False. The appendages of merstomata are found on the ventral side. |
True. |
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In merstomata, these appendages are the smallest and are found at the most anterior pair. |
Chelicerae |
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In merostomata, these appendages resemble the next three pairs (ambulatory organs) and are locomotory organs. |
Pedipalps |
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The largest and the only appendages of the prosoma, which are not chelate in merostomata. |
The last pair of ambulatory legs (the fourth). |
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(Merostomata) The first pair of abdominal appendages that is fused and serves as a cover for the other five pairs |
Genital operculum |
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(Merostomata) The narrow pairs of abdominal appendages |
Endopodite |
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(Merostomata) The leaf-like abdominal appendage |
Exopodite |
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(Merostomata) These are found on the posterior surface of the abdominal appendages. |
Gill Books |
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True or False. Species under class merostomata have antennae. |
False. They do not. |
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What type of lungs are found in Arachnids? |
Book lungs |
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The prosoma in arachnids are usually? |
Unsegmented and covered dorsally with carapace. |
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(Arachnida) How many eyes do spiders have? |
8 simple eyes |
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(Arachnida) What is the arrangement of the 8 simple eyes in spiders? |
2 rows of 4 each along the anterior border of the carapace. |
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(Arachnids) What is non-chelate, vertical in position, with a large basal segment and a slender sharp terminal piece, which is hollow for the introduction of the poison? |
Chelicera |
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(Arachnids) A basal join that is produced medially for chewing |
Gnathobase |
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(Arachnida) The abdomen is joined to the prosoma by the? |
Pedicel or Petiolus |
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(Arachnida) Produces the thread for the making of the web. |
Spinnerets |
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(Arachnids) The opening of the book lungs |
Small slits located on the ventral side of the abdomen near the pedicel. |
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(Arachnids) True or False. The male of many spiders are bigger than the female. |
False. Smaller — mommy dommy. |
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The most appendages in merostomata are called? |
Chelicerae |
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The second appendages in merostomata are called? |
Pedipalps |
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The last four pairs of appendages in merostomata |
The ambulatory legs |
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Known as horseshoe crab or king crab |
Trachypleus |
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Although trachypleus is found in the Philippines, it is only in…. |
Palawan and nearby islands |
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In merostomata, it the broad and horseshoe shaped covering of the prosoma |
Carapace |
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Terminal appendage in merostomata |
Telson |
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What shaper/form does the telson appear in cross-section |
Triangle |
