Chelicerata

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    Scorpion Lab Report

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    The pair of scorpion appendages that appear to be adapted for grasping prey are their chela (claws). The claws have a movable finger and an immovable finger. The movable finger is what clamps down and grasps onto prey. The first pair of legs appear to be extremely long, yet thin, much smaller than the claws that they have. They appear to be the smallest appendages that the scorpion has. The function that they may serve is to help stabilize the scorpion as it is walking around. They might also function as some sort of sensory organ due to how as a scorpion moves, the first pair of legs will touch new areas first. The palps appear to be similar to small claws near the scorpions mouth. Potentially, the function that they serve is to crush their prey into smaller pieces before consuming them. Within the video, once the spider was aware of the insect within the cage, it lunged out and grabbed the insect. It appeared to quickly shove the prey within its mouth; likely killing the cricket rapidly. The body segmentation in the centipede differs from that in the arachnids and insects at the other stations in this lab because the centipede only has one pair of legs on each body segment. In comparison, arachnids and insects usually have multiple pairs of legs on one body segment. The Ten-lined June Beetle does show sexual dimorphism. When comparing males and females, the greatest contrast appears in their antennae. Males appear to have larger antennae than females. The…

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    Introduction The diversity of arthropods extends beyond the location factor alone as multiple influences such as humidity levels, atmospheric content and other environmental conditions contribute to their widespread assortment. Gaps in diversity indices do not only occur amongst insect populations residing at regionally distinct locations as these influences are also reflected in arthropod communities over small distances. Climatic conditions often lead to insect migrations and extinctions which…

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    According to Volz (2008) the Atlantic horseshoe crab has a of pair compound eyes that sit amongst its head. These are its lateral eyes; they are used to help the Atlantic horseshoe crab find a mating partner. The Limulus polyphemus is the only animal from the subphylum chelicerata with these compound eyes. The Atlantic horseshoe crab has an additional five eyes located on top of its shell. The first two are the median eyes. The median eyes have the ability to see ultraviolet light and…

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    Eurypterid Research Paper

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    ing Lama Sherpa GEO 206-01 RESEARCH PROJECT EURYPTERIDS ABSTRACT 1.INTRODUCTION ‚Ä®Eurypterids are a large extinct group of arthropods that ranged from 10 cm to 2 m in length. They belonged to the extinct order Eurypterida of the phylum Arthropoda, Subphylum Chelicerata and class Merostomata. According to the fossil record, the first Eurypterids were present in the mid-Ordovician and they thrived in warm shallow water until the late Permian when they went extinct. Thus, they lived for…

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    Questions On Bottled Water

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    of time between the purchase date and the date of receiving a refund check? a. 2 weeks + 4 weeks + 1 week b. 30 days + 4 weeks + 1 week c. 2 weeks + 6 weeks + 1 week d. 30 days + 6 weeks + 1 week 48. A refund for this purchase could be denied if the customer a. failed to circle the model and serial numbers on the sale receipt. b. used the product exclusively for 3 weeks c. does not normally use a post office box. d. did not include the guarantee statement when returning product. 1.…

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