TAMU BIOLOGY 112 EXAM #3 Questions and Answers 100% Pass

TAMU BIOLOGY 112 EXAM #3 Questions and Answers 100% Pass Select the TRUE statement about animal development: A.) Deuterostome development is indeterminate. B.) Mesoderm in protostomes arises as outpocketings of the primitive gut. C.) Radial cleavage is characteristic of protostome development. D) In deuterostomes, the blastopore ultimately becomes the mouth of the adult. E) All of the above are true. - Answer- Deuterostome development is indeterminate. During embryogenesis of diploblastic and triploblastic animals, the embryo becomes multilayered (i.e., the germ layers are differentiated) through the process of: A) enterocoely B) cleavage C) blastulation D) coelom formation E) gastrulation - Answer- gastrulation Which of the following groups is INCORRECTLY matched with a feeding mode (i.e., mechanism of acquiring food) or structure? A) Nemertea - retractable proboscis B) Rotifera - ciliated crown C) Porifera - lophophores D) Cnidaria - tentacles armed with stinging cells E) Gastropoda - radula - Answer- Porifera - lophophores A triploblastic animal in which the fluid-filled body cavity is only partially lined (lined on one side) with mesodermal tissue is referred to as: A) deuterostome B) pseudocoelomate C) protostome D) acoelomate E) coelomate - Answer- pseudocoelomate Which of the following groups is INCORRECTLY matched with a characteristic or attribute? A) Animalia - holotrophic B) Anthophyta - flowers and fruits C) Ctenophora - extensive cephalization D) Cnidaria - dimorphic life cycle in some species E) Gastropoda - asymmetrical growth during development results in 180o rotation of the visceral mass - Answer- Ctenophora - extensive cephalization Animals that actively move in a unidirectional fashion through their environment would be expected to exhibit which of the following characteristics? A) bilateral symmetry B). radial symmetry C). cephalization D) a and c E) b and c - Answer- a and c A lophophore is a structure used by lophophorates for A) sensory reception B) structural suppor