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BIO LAB PRACTICAL 2

For UOP lab practical

QuestionAnswer
classes in Phylum Cnidaria Hydrozoa, Anthozoa, Scyphozoa
characteristics of Class Hydrozoa hydrozoans; solitary/ colonial, polyp stage is dominant, medusa stage absent or reduced; velum to move
characteristics of Class Scyphozoa larger than Hydrozoa, medusa stage is dominant, velum is absent, polyp stage is reduced or absent
characteristics of Class Anthozoa sea anenomes and corals; no medusa stage
clades in Phylum Platyheminthes Sub-phylum Catelunida and Sub-phylum Rhabditophora
classes in Sub-phylum Rhabditophora Turbellaria, Cestoda, Trematoda, and Monogenea
characteristics in Turbellaria free-living flatworms; no larval stage, move with cilia and secrete mucus
characteristics in Trematoda flukes; parasitic, suckers for attachment, hermaphrodites but cross-fertilizing
characteristics of Cestoda tapeworms; parasitic, digestive tract absent in adult, segmented, anterior scolex for attachment
classes in Phylum Annelida Polychaeta, Oligochaeta
characteristics of class Polychaeta polychaetes, tubeworms; segments w/ parapodia bearing setae, clitellum absent
characteristics of class Oligochaeta earthworms, nightcrawlers, leeches; present clitellum but absent parapodia, head is inconspicuous
male genital pores on an earthworm segment 15
female genital pores on an earthworm segment 14
seminal receptacles on an earthworm between segments 9-10 and 10-11
classes in Phylum Mollusca Polyplacophora, Gastropoda, Bivalvia, Cephalopoda
characteristics in class Polyplacophora chitons; shell is composed of eight dorsal plates, reduced head
characteristics in class Gastropoda snails, slugs; body asymmetrical
characteristics in class Bivalvia clams, oysters, mussels, scallops; shell of two lateral halves hinged dorsally, radula absent
characteristics in class Cephalopoda squids, octopi, nautili; head well developed, conspicuous eyes, feet are modified into tentacles
if bivalve reproduces internally, larval stage is called glochidium
sub-phylums in Phylum Arthropoda Chelicerata, Myriapoda, Hexapoda, Crustacea
classes in Sub-phylum Chelicerata Meristomata (horseshoe crabs), Aracnida
classes in Sub-phylum Myriapoda Diplopoda (millipedes), Chilopoda (centipedes)
classes in Sub-phylum Hexapoda Insecta
classes in Sub-phylum Crustacea Decapoda
characteristics of class Insecta head, thorax, and abdomen; three pairs of legs and two pairs of thoracic wings; tracheal tubes for effecient O2-CO2 exchange
classes in Phylum Echinodermata Asteriodia (sea stars), Ophiuroidea (brittle stars), Echinoidea (sand dollars and sea urchins), Holothuroidea (sea cucumbers)
sub-phylums in Phylum Chordata Urochordata (tunicates and sea squirts) Cephalochordata (lancelets), Craniata
classes in Sub-phylum Craniata Myxini (hagfishes), Petromyzontida/Cephalospidomorphi (lampreys), Actinopterygii (ray-finned fishes/bony fish), Amphibia (frogs, salamanders), Reptilia, Mammalia
reptiles have a scaly integument
homeotherm maintains relatively constant body temp
poikilotherm variable body temp
endotherm maintain internal body temp independent of environment
ectotherm body temp depends on temp of environment
hydrostatic organ controls buoyancy by changing amount of gasses in swim bladder
Created by: ileantie
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