Chapter 2, Problem 21MC

Figure 17.8 Do you think Dolly was a Finn-Dorset or a Scottish Blackface sheep?

Match each of the following terms with the correct meaning. ________ Ventral Lying on the back, face upwards Farther from the point of attachment The front of the body or body part Toward the tail end of the spine

Some scientists now think that fossils identified as Homo erectus represent which two different species? (a) H. habilis and H. erectus (b) H. ergaster and H. erectus (c) H. heidelbergensis and H. ergaster (d) H. neanderthalensis and H. erectus (e) H. neanderthalensis and H. sapiens

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.

Figure 29.22 Which of the following statements about the parts of an amniotic egg are false? The allantois stores nitrogenous waste and facilitates respiration. The chorion facilitates gas exchange. The yolk provides food for the growing embryo. The amniotic cavity is filled with albumen.

Endoskeletons: a. protect internal organs and provide structures against which the force of muscle contraction can work. b. differ from exoskeletons in that endoskeletons do not support the external body. c. cannot be found in echinoderms. d. are composed of cartilaginous structures that form the skull. e. compose the arms and legs.

A plane that divides an animal into equal right and left portions is. diagonal midsagittal coronal transverse

Watch this animation (http://openstaxcollege.org/l/limbbuds) to follow the development and growth of the upper and lower limb buds. On what days of embryonic development do these events occur: (a) first appearance of the upper limb bud (limb ridge); (b) the flattening of the distal limb to form the handplate or footplate; and (c) the beginning of limb rotation?

Which of the following is not possible? radially symmetrical diploblast diploblastic eucoelomate protostomic coelomate bilaterally symmetrical deuterostome