A radula in a gastropod is a female reproductive structure A sharp, tooth like structure for killing prey a structure that aids in feeding a sense organ for detecting light Which choice correctly identifies the body plan of a Mollusc? radial symmetry bilateral symmetry asymmetry (no symmetry) A characteristic present in members of the arthropod subgroup that includes spiders, but not present in other arthropod classes would be the presence of chelicerae. an open circulatory system. an exoskeleton. a cuticle. a cephalothorax.

A radula in a gastropod is a female reproductive structure A sharp, tooth like structure for killing prey a structure that aids in feeding a sense organ for detecting light Which choice correctly identifies the body plan of a Mollusc? radial symmetry bilateral symmetry asymmetry (no symmetry) A characteristic present in members of the arthropod subgroup that includes spiders, but not present in other arthropod classes would be the presence of chelicerae. an open circulatory system. an exoskeleton. a cuticle. a cephalothorax.

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter27: Introduction To Animal Diversity

Section: Chapter Questions

Problem 3VCQ: Figure 27.9 Which of the following statements about diploblasts and triploblasts is false? Animals...

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Figure 27.9 Which of the following statements about diploblasts and triploblasts is false? Animals that display radial symmetry are diploblasts. Animals that display bilateral symmetry are triploblasts. The endoderm gives rise to the lining of the digestive tract and the respiratory tract. The mesoderm gives rise to the central nervous system.
Which of the following is not a member of the phylum Chordata? a. Cephalochordata b. Echinodermata c. Urochordata d. Vertebrata
Which is/are true of the mollusc radula a toothed structure is a synapomorphy of Mollusca is situated in the foregut present in bivalves A potential disadvantage of torsion in gastropods: consumption of feces more efficient gas exchange head protection small body size
A radula in a gastropod is a female reproductive structure A sharp, tooth like structure for killing prey a structure that aids in feeding a sense organ for detecting light Which choice correctly identifies the body plan of a Mollusc? radial symmetry bilateral symmetry asymmetry (no symmetry)
Serial repetition of the body parts is most specifically referred to as O tacky metamerization O proglottidism tagmatization somaticism tubiculous
The basic body plan of a mollusk is to have a head, foot, and visceral mass. In the case of the cephalopods, the foot; Has become part of the digestive system Has been modified into a beak Has been modified into tentacles Has been modified into part of the respiratory system
A unique feature of the gastropods is that they undergo the process of embryonic torsion. This process results in; The spiral shaped shell that gastropods have The gastropod develops retractable antennae the anus being positioned near the head The gastropod foot becomes elongated and pliable
You spent time in a body of freshwater in the tropics and sometime later become fatigued and develop nerve cord lesions. Your doctor discovers eggs in your feces which contain embryonated eggs (egg capsule containing a miracidium larva). This means you have been infected by a trematode liver fluke a cestode a tape worm a nematode worm a trematode blood fluke
A closed circulatory system becomes an advantage when: (mark all that apply) there is a need for increased oxygen supply to muscles ever gills are no longer needed there is a need for decreased excretion of nitrogenous waste products or carbon dioxide adopting a sedentary or sessile life history the pressure within the circulatory system must be decreased O there is a need for increased oxygen supply to nerve cells
These differ from the other classes of sponges in that their cells are syncytial (multinucleate and only a few cells or even one cell can cover the entire skeleton) Hexactinellida Calcerea Demospongia Homescleromorpha
Which of the following apply to the spider in the image? echinoderm gastropod book lung trachae chelicera arthropod insect exoskeleton
Relative to asconoid organization in sponges the syconoid form exhibits smaller body size increased spongocel volume relative to pumping surface area reduced spongocel volume relative to pumping surface area larger body size