Directional Terms

Question 1

Study of form and function, how a structure and its function become an integrated part of an interconnected design, and of how this design becomes a factor in the evolution of new forms, focuses on higher levels of biological organization-at the level of the organism, its parts, and its position within the ecological community.

Answer 1

morphology

Question 2

applies to two or more features that share a common ancestry

Answer 2

homology

Question 3

features with a similar function

Answer 3

analogy

Question 4

can be traced back in time to the same feature in a common ancestor

Answer 4

homologous

Question 5

similarity between successively repeated parts in the same organism

Answer 5

serial homology

Question 6

features that simply look alike

Answer 6

homoplasy

Question 7

way in which an animal’s body meets the surrounding environment

Answer 7

symmetry

Question 8

body laid out equally from a central axis

Answer 8

radial symmetry

Question 9

only mid-sagittal plane divides the two mirrored images, left and right.

Answer 9

bilateral symmetry

Question 10

Head end or cranial in quadripeds; ventral end in bipeds

Answer 10

anterior

Question 11

tail end or caudal in quadripes; dorsal end in bipeds

Answer 11

posterior

Question 12

back

Answer 12

dorsal

Question 13

front/belly

Answer 13

ventral

Question 14

midline

Answer 14

medial

Question 15

sides

Answer 15

lateral

Question 16

farthest

Answer 16

distal

Question 17

closest

Answer 17

proximal

Question 18

chest, supports forelimbs

Answer 18

pectoral region

Question 19

hips supports hindlimbs

Answer 19

pelvic region

Question 20

divides bilateral body into dorsal and ventral sections

Answer 20

frontal plane

Question 21

sagittal plane

Answer 21

splits into left and righ

Question 22

splits into anterior and posterior portions

Answer 22

transverse plane

Question 23

built of repeating or duplicated sections

Answer 23

segmented

Question 24

each repeated section

Answer 24

segment/metamere

Question 25

process that divides body into duplicated sections

Answer 25

segmentation