03:37Animal Classification | Evolution | Biology | FuseSchoolFuseSchool - Global Education617views1rank
Multiple ChoiceWhich of the listed characteristics is shared by plants, fungi, and animals? 1411views
Multiple ChoiceAnimals probably evolved from colonial protists. How do animals differ from these protist ancestors? 1237views
Multiple ChoiceMany young animals are __________, a sexually immature form that is morphologically distinct from the adult stage. These young animals undergo __________ to become __________, which resemble adults but are not yet sexually mature. 482views1rank
Multiple ChoiceIn the embryo of a shark, ectoderm gives rise to __________; mesoderm gives rise to __________; endoderm gives rise to __________. 602views
Multiple ChoiceWhich of the following is the defining characteristic of the clade Ecdysozoa for which this group is named? 479views1rank
Multiple ChoiceOne of the primary developmental/anatomical characteristics distinguishing the major animal phyla is the condition of the body cavity. A pseudocoelomate animal is one in which the body cavity is __________. 436views
Multiple ChoiceThe zygotes of many protostomes undergo __________ cleavage and __________ cleavage. 392views1rank
Multiple ChoiceAn animal with a true coelom that has __________ cleavage must be a(n) __________. 475views1rank
Multiple ChoiceWhich of the following is a trait shared by protostomes and deuterostomes? 511views2rank
Textbook QuestionName two phyla of animals that are radially symmetric and two that are bilaterally symmetric. How do the general lifestyles of radial and bilateral animals differ?508views
Textbook QuestionThe table below lists the common names of the nine animal phyla surveyed in this chapter. For each phylum, list the key characteristics and some representatives. 674views
Textbook QuestionWhich synapomorphy (shared, derived trait) distinguishes animals as a monophyletic group, distinct from choanoflagellates? a. multicellularity b. coloniality c. heterotrophy d. movement512views
Textbook QuestionIdentify the pattern of embryonic development shown in each drawing below and name the phylum (or phyla) that exhibit this pattern. 536views
Textbook QuestionWhich of the following was probably the least important factor in bringing about the Cambrian explosion? a. the emergence of predator-prey relationships b. an increase in the concentration of atmospheric oxygen c. the movement of animals onto land d. the origin of Hox genes691views
Textbook QuestionBilateral symmetry in animals is best correlated with a. an ability to see equally in all directions. b. the presence of a skeleton. c. motility and active predation and escape. d. adaptation to terrestrial environments.1033views
Textbook QuestionWhich of the following combinations of phylum and description is correct? (A) Echinodermata—radial symmetry as a larva, coelom (B) Nematoda—roundworms, internal skeleton (C) Platyhelminthes—flatworms, gastrovascular cavity, no body cavity (D) Porifera—gastrovascular cavity, coelom1266views
Textbook QuestionWhich of the following animal groups does not have tissues derived from mesoderm? a. annelids b. echinoderms c. cnidarians d. flatworms705views