5.1-5.3

Question 1

bryophyta

Answer 1

short stature ex. moss. non-vascular (use osmosis). produce spores

Question 2

filicinophyta

Answer 2

ferns and horsetails. vascular. absence of flowers, triangular fronds

Question 3

coniferophyta

Answer 3

ceder, juniper, fir, pine trees. woody stems, leaves = needles or scales

Question 4

angiospermophyta

Answer 4

make flowers (sexual reproductive organs), seeds surrounded by fruit

Question 5

porifera

Answer 5

sponges. sessile (stuck in place), no mouths/digestive tracts, feed by pumping water thru tissues. no muscle, nerve tissue, distinct internal organs

Question 6

cnidaria

Answer 6

sea jellies, coral polyps, sea anemones, jellyfish. stinging cells called nematocysts. some sessile, some free swimming. use gastric pouch w/ one opening to digest food caught in tentacles

Question 7

platyhelminthes

Answer 7

flatworms. 1 body cavity (gut w one opening for food to enter and waste to exit). no heart no lungs. cells need to be close to surface to exchange gases by diffusion, so they’re flat. not segmented

Question 8

annelida

Answer 8

segmented worms (earthworm, leeches, polychaetes). bristles on bodies. gastric tract w/ mouth at one end and opening at other for waste

Question 9

mollusca

Answer 9

snails, clams, octopi. shell reinforced w/ calcium. one-way digestive system w mouth and anus. not segmented

Question 10

arthropoda

Answer 10

insects, spiders, crustaceans

Question 11

chordata

Answer 11

vertebrates (have a backbone). notochord at some point of development (line of cartilage going down the back to provide support)