Ch 32

What should animals with radial symmetry be better able to do than those with bilaterial symmetry?

• Move quickly in one direction
• Detect threats from above or below equally well
• Deal effectively with food distributed evenly in all directions
• Focus attention in a single direction

Which genetic change is thought to have led to the increasing complexity of the arthropod body plan?

• Increased number of Hox genes for body segmentation
• Changes in regulation of Hox genes for body segmentation
• Increased number of Hox genes for appendages
• Changes in regulation of Hox genes for appendages
• Increased complexity in genes for exoskeleton arrangements

Tags

NGSS.HS-LS4-2

NGSS.HS-LS4-4

Which statement about Hox genes would lose points on a test?

• The Hox gene family underwent a series of duplications
• Most animals share a unique homeobox-containing family of genes
• Hox genes regulate the formation of the anterior-posterior axis
• Simple animals such as sponges possess Hox genes

Tags

NGSS.HS-LS4-2

NGSS.HS-LS4-1

Which is not a reason for the rise in the diversity of animal phyla during the Cambrian?

• Predators acquired novel adaptations
• Prey species acquired new defenses
• An increse in atmospheric oxygen permitted larger bodied animals to thrive
• Hox genes facilitated the evolution of new forms
• Global cooling triggered shifts in animal lineages

Tags

NGSS.HS-LS4-5

Which of the following triploblastic organisms is incorrectly paired with its body cavity classification?

• flatworm- pseudocoelomate
• earthworm- coelomate
• planarian flatworm- acoelomate

In which type of cleavage pattern does each cell have the capacity to develop into a complete embryo?

• Determinate cleavage
• Indeterminate cleavage
• Spiral cleavage
• None of the above

Which taxonomic level contains the other choices?

• Deuterostomia
• Lophotrochozoa
• Ecdysozoa
• Eumetazoa

Which is not true of the Neoproterozoic era?

• Soft-bodied, multicellular eukaryotes could be found
• Molluscs, sponges, and cnidarians could be found
• Predation existed
• Animal diversity decreased
• Glaciers killed most life on Earth

Tags

NGSS.MS-LS4-1

Which characterize(s) an animal body plan? (Select all that apply)

• Symmetry
• Tissues
• Body cavity
• Development

Pick the set of groups in the order in which they appeared.

• Cnidaria, Aceola, Nematoda, Porifera

• Porifera, Cnidaria, Aceola, Nematoda

• Aceola, Nematoda, Porifera, Cnidaria

• Nematoda, Aceola, Porifera, Cnidaria

• Aceola, Cnidaria, Nematoda, Porifera

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-1