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Zoology Ch 14
Arthropods
| Question | Answer |
|---|---|
| What is NOT a characteristic of phylum Arthropoda? | dorsal nervous system |
| What is not an example of Ecdysozoan phyla? | Mollusca |
| The outermost waxy layer of the arthropod exoskeleton is called the: | Epicuticle |
| A layer of cells that secretes the arthropod exoskeleton is called the: | Hypodermis |
| To which phyla of animals are arthropods now considered most closely related? | Nematoda |
| Which subphyla of arthropods does not contain any living animals? | Trilobitomorpha |
| Whithin which phyla of animals has metamerism not evolved? | Nematoda |
| In the region of a joint, the _______ of the exoskeleton is less hardened and forms an articular membrane. | Procuticle |
| Biramous appendages are present in, or were present in: | Crustacea and Trilobitomorpha |
| The sensory, feeding, and locomotor tagmata of members of the subphylum Chelicerta is the: | prosoma or cephalothorax |
| The second pair of appendages of members of the subphylum Chelicerata is used in sensory perception, feeding, locomotion, and reproduction, these appendages are called: | pedipalps |
| Excretory structures found in many arachnids consists of thin-walled sacs that open to the body surface at pores near the base of posterior appendages. These excretory structures are called: | Coxal glands |
| Most arthropods lay eggs that develop outside the body, they are: | Ovioparous |
| Ticks and mites are members of the order: | Acarina |
| Harvestmen or daddy longlegs are members of the order: | opiliones |
| Of the subphylum crustacea, ____ has the largest number of species | Malacostraca |
| Barnacles are the members of the class: | Maxillopoda |
| Metamorphosis often results in adult and immature stages having different feeding habits and habitats. Metamorphosis, therefore, reduces competition betweeen adults and immature stages and has contributed to the success of the arthropods. T/F | true |
| Metamerism has arisen at least three times in animal evolution. T/F | True |
| Krill are in the class branchiopoda. T/F | False |
| Arthropods that have just undergone ecdysis are secretive and remain hidden because of the new exoskeleton has not yet hardened | True |
| Book lungs or book gills are present in members of subphylum Crustacea. T/F | False |
| Scorpions have a period of courtship prior to mating. mating occurs by copulation and the direct transfer of sperm from the male to the female. T/F | False |
| Members of the class Pycnogonida are the sea spiders. Pycnogonids are dioecious. After eggs are fertilized, they are cemented onto ovigers of the male where they are carried until hatching. T/F | True |
| The appendages of a crayfish are said to be serially homologous because they have evolved from a common ancestral form. The common ancestral form is the biramous appendage, which consists of a protopodite that attaches to the body wall and gives rise to t | True |
| In the barnacles, planktonic nauplius larvae attach to the substrate by their first antennae and metamorphose to adults. T/F | False |
| Members of the subphylum Chelicerta were preadapted for terrestrial live by the exoskeleton which was relatively impermeable to water nd supportive on land. T/F | True |
| Members of the subphylum Trilobitomorpha were a dominate life form in the oceans during the Cambrian period, to the Carbonferous period. today a few living species of trilobites inhabit deep water along the eastern coast of North America. T/F | False |
| Horseshoe crabs are members of the class Merostomata. Their body form has changed little over the last 200 milllion years, and they are an excellent example of stablilizing selection. T/F | True |
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