1. Classification of life on Earth is currently done using which of the following?
A. Genome sequencing
B. Anatomy and physiology
C. Features of
... [Show More] embryonic development
D. All of the above
2. The necessity to obtain food has encouraged motility in animals during some, if not all,
stages of their life cycles.
True or False
3. Which of the following terms are used to describe the development of progeny with
identical or similar genomes, all of the same gender depending on the species, and the
assurance of offspring without the requirement of mates to fertilize eggs.
A. Sexual reproduction
B. Mitosis
C. Parthenogenesis
D. Hermaphrodism
4. Which of the following monophyletic clades lack tissue specialization?
A. Placozoans
B. Cnidarians
C. Bilaterians
D. Ctenophorans
5. Which of the following it true of body plans?
A. Animals that exhibit bilaterial symmetry are sessile, and need to obtain nutrients and gas
exchange from all dimensions of their environments.
B. Animals that are radially symmetrical have true tissue differentiation and a mesoderm.
C. Duplications of Hox genes has resulted in increased complexity among animal body plans
and morphology.
D. All radially symmetrical animals exhibit body plans evolved for locomotion to prey or away
from predators.
6. In what order do the following stages of embryonic development occur?
I. The formation of germ layers begins, and that are programmed to develop into organs and
organ systems in a process called organogenesis.
II. The eight-celled structure appears, and continues further cell division and rearrangement
producing a hollow structure called a blastula.
III. Cleavage begins with a series of mitotic cell divisions producing smaller and smaller cells
called blastomeres with no actual cell growth.
IV. Gastrulation results followed by further cell division and rearrangement producing a
primitive gut or digestive cavity within the blastopore.
A. III, II, IV, I
B. I, II, III, IV
C. II, III, IV, I
D. III, IV, II, I
7. Which of the following layers are present prior to gastrulation during embryonic
development?
A. Mesoderm
B. Endoderm
C. Ectoderm
D. None of the above
8. Organogenesis refers to the development of certain tissue types, organs, and organ systems
among triploblasts.
True or False (And Diploblastic)
9. Animals that go through a complete metamorphosis during their embryonic development
have the benefit of limited competition for food between adults and larva.
True or False
10. Which of the following features are used to classify animals?
A. Body symmetry and position of mouth and anus
B. Number of tissue types and tissue specialization
C. Presence or absence of an internal body cavity
D. All of the above
11. Which of the following is true according to the current animal phylogenic tree presented in
Chapter 27?
A. The common ancestor linking Parazoans and Eumetozoans is exemplified by the similarities
observed between the choanocytes of sponges and the choanoflagellates of protists.
B. Radially symmetrical animals and bilaterally symmetrical animals are classified differently
based on their body plans.
C. Protostomes and deuterostomes are classified differently based on their embryological
development.
D. All of the above
12. Which of the following germ layers gives rise [Show Less]