Midterm 1-3

Question 1

Ph

Answer 1

6.5-7.5
baking soda raise
Aquarium ph down lower

Question 2

Ammonium NH4

Answer 2

0

Water change lower

Question 3

Nitrate NO3

Answer 3

50-100

Water change

Question 4

Nitrite NO2

Answer 4

0

Chloride lowers

Question 5

Annelids

Answer 5

Earthworm leech
Hydrostatic body setae
Detritavores and live in many environments and are parasites which impact ecosystems

Question 6

Molluscs

Answer 6

Oyster snail octopus cuttlefish squid
Mantle radula
Eaten and sold by humans clean out algae and plankton through feeding on them

Question 7

Crustaceans

Answer 7

Barnacle lobster krill
Exoskeleton made of chitin segmented body
Feed on other organisms and fed on by other organisms

Question 8

Cnidaria

Answer 8

Sea anemone coral jellyfish
Nemocytes medusa vs polyp present
Tourist attraction (coral) decompose within benthic layer when dead

Question 9

Echinoderms

Answer 9

Sea cucumber sea urchin starfish sand dollar
Water filter no excretory organs
Will feed on other organisms and are filter feeders

Question 10

Porifera

Answer 10

Sponge
Choanocytes no organs
Filter feeders and house other organisms

Question 11

Mutualism

Answer 11

Both organisms benefit from relationship

Sea anemone and clownfish

Question 12

Commensalism

Answer 12

One organism benefits the other does not benefit or get harmed
Fish taking shelter in sponge

Question 13

Parasitism

Answer 13

One benefits while harming the other

Worms live inside organism/fish and eat their intake and feed on them