vocab Unit 2

Question 1

bilateral symmetry

Answer 1

divided only by one plane

Question 2

budding

Answer 2

polyp produces mini versions of itself that drop off and assume an independent existence.

Question 3

cephalization

Answer 3

concentration of sensory organs and a brain in a defined head region.

Question 4

closed circulatory system

Answer 4

blood stays confined in the heart and blood vessels

Question 5

coelom

Answer 5

body cavity

Question 6

compound eye

Answer 6

multiple light detectors, acute chemical and tactile senses

Question 7

deuterostome

Answer 7

outgrowth of the digestive cavity from the coelom

Question 8

ectoderm

Answer 8

give rise to the tissues that cover the outside of the body

Question 9

endoskeleton

Answer 9

internal skeleton composed of calcium carbonate

Question 10

exoskeleton

Answer 10

external skeleton that encloses the arthropod body like suit of armor

Question 11

ganglion

Answer 11

faltworm cluster of nerve cells

Question 12

hemocoel

Answer 12

blood cavity

Question 13

hermaphroditic

Answer 13

they posses both male and female sexual organs

Question 14

hydrostatic skeleton

Answer 14

framework against which muscles can act

Question 15

invertebrate

Answer 15

those lacking backbone

Question 16

larva

Answer 16

insects immature phase

Question 17

mesoderm

Answer 17

third germ layer

Question 18

metamorphosis

Answer 18

radical change from juvenile body to adult body form

Question 19

molt

Answer 19

shed exoskeleton

Question 20

parasite

Answer 20

organism that lives in or on the body of another organism

Question 21

protosome

Answer 21

formation of the coelom between the body wall and digestive cavity

Question 22

pseudocoelom

Answer 22

body cavity not completely surrounded by mesoderm-derived tissue

Question 23

pupa

Answer 23

non eating phase where afterwords the insect becomes an adult

Question 24

radial symmetry

Answer 24

divide in many planes

Question 25

segmentation

Answer 25

ringlike depressions externally identical copies of nerves internally

Question 26

tissue

Answer 26

group of similar cells intergrated into a functional unit

Question 27

vertebrate

Answer 27

embryonic notochord is replaced during development by a backbone

Question 28

alteration of generation

Answer 28

plant reproduction life cycle

Question 29

angiosperm

Answer 29

flwoering seed plants

Question 30

antheridium

Answer 30

reproductive structures where sperm are formed

Question 31

archegonium

Answer 31

reproductive structures where eggs are formed

Question 32

conifer

Answer 32

evergreen plants photosynthesis year round antifreeze sap

Question 33

cuticle

Answer 33

waxy cover on leaves

Question 34

flower

Answer 34

structures that have both male and female gametes

Question 35

fruit

Answer 35

swollen ovary

Question 36

seed

Answer 36

embryonic dipolid (sporophyte)

Question 37

gametophyte

Answer 37

haploid cells

Question 38

lignin

Answer 38

stiffening substance in plants

Question 39

nonvascular plant

Answer 39

bryophytes no true roots - they have rhizoids no transfer cells

Question 40

ovule

Answer 40

unfertilized seeds at the base of a flower

Question 41

pollen

Answer 41

male haploid cell (gametophyte)

Question 42

sporophyte

Answer 42

dipolid cells

Question 43

stoma

Answer 43

pores in leaves

Question 44

vascular plant

Answer 44

tracheophytes have true roots, leaves, stem transfer cells

Question 45

gymnosperm

Answer 45

nonflowering seed plants

Question 46

vertebrates

Answer 46

those with backbone

Question 47

nerve cords

Answer 47

conduct nervous signals to and from the ganglia

Question 48

endoderm

Answer 48

give rise to the tissue that line the gut cavity