Animal 1 answers
1) autotrophic
nutrition.
2) cell wall
3) collagen genes
4) by ingesting it.
5) changes in the homeobox
genes governing early development
6) 3, 4, 1, 2
7) gastrulation
8) sexual reproduction
9) Hox
10) presence of Hox genes
11) similar structures
arising independently in different lineages convergent evolution among different lineages adaptation by different
lineages to the same selective pressures
12) 2, 4, 3, 1, 5
13) Cambrian period.
14) mineralized hard parts
15) increased incidence
of hard parts in the fossil record
16) gene duplication
17) adaptive radiation.
18) 2, 4, 1, 3
19) Mesozoic
20) 5, 3, 2, 1, 4
21) Cenozoic
22) body symmetry
23) move from place to place relatively slowly,
if at all.
24) have
radial symmetry.
25) bilateral
symmetry.
26) a
sessile existence.
27) mesoderm-nervous system
28)
sponge.
29) Analysis of genes
shows that their sequences are quite similar, and these sequences differ from
those of the lophotrochozoans and deuterostomes.
30)
Porifera-coelomates, mouth from blastopore
31)
Eumetazoa
32)
motility and active predation and escape.
33) a
solid body without a cavity surrounding internal organs.
34) true tissues.
35) are solid with tissue.
36) have a body
cavity completely lined by mesodermal tissue, whereas
pseudocoelomates do not.
37) Internal organs are
cushioned and protected from injury.
Organs can grow and move independently of the outer body wall. The cavity acts as a
hydrostatic skeleton.
38) Muscular activity of
its digestive system distorts the body wall.
39) diploblastic.
40) gastrula.
41) archenteron.
42) spiral and
determinate cleavage, blastopore becomes mouth, schizocoelous development
43) determinate cleavage
44) indeterminate
cleavage.
45) They are protostomes.
46) sea
star.
47) spiral
and determinate; radial and indeterminate
48) true tissues or no tissues.
49) 3, 4, 2, 1
50) Some, but not all, grades reflect
evolutionary relatedness.
51) deuterstomes.
52) nucleotide sequences of homologous
genes
53) hypothetical
portrayals of evolutionary relationships.
54) monophyletic.
55) protist.
56) metazoans.
57) echinoderms.
58) annelids echinoderms
59)
3, 5
60) The fossil evidence
will be understood to have been incorrect because it is incomplete.