miocrbes and palnts

Question 1

why are viruses important in population dynamics of aquatic ecosystems

Answer 1

because they can easily move through water (suspended in water) = easily access fish and plants and shit

Question 1

why aren’t viruses technically organisms themselves

Answer 1

they require a host to survive

Question 2

T/F; viruses are host sensitive

Answer 2

false: viruses can be host sensitiv or widely infective

Question 3

when are virus infection rates high

Answer 3

high density of hosts to infect and the virus

remains viable outside host for a long time

Question 4

viruses get deactivted how? x3

Answer 4

uv light
goes into improper host
predation by microflagellates

Question 5

archaea live in ____ enviornment

Answer 5

extreme

Question 6

____ is the group that is most abundant (by biomass)

Answer 6

bacteria

Question 7

cyanobacteria:
get energy/food via =
use _____ light
habitat =
bloom conditions =

Answer 7

photosynthess
green
most aquatic habitats (even extreme)
lots of nutrients + warm + calm conditions

Question 8

how does cyanobacteria affect water quality

Answer 8

kills fish
closese beaches
contaminates drinking water

Question 9

cyanobacteria fix _____ and produce ____ byproducts

Answer 9

nitrogen
toxic

Question 10

algal bloom associated with ______ of lakes

Answer 10

eutrophication (too mch nutrients)

Question 11

Protoctista are very important base of food web becauses…

Answer 11

they create the majority of primary production and do majority of nutrient recycling

Question 12

autotrophic protoctista example

Answer 12

algae

Question 13

red algae:
freshwater habitat =
why is it red? =
how does the red colour affect where it can live? =

Answer 13

small streams with low light

eat blue/green light and reflects red light

they can live in shaded eenviornments because they’re taking the leftover light that the taller trees aren’t using

Question 14

golden algae:
habitat =
physical characteristic =
____-trophic

Answer 14

attached to phytoplankton in low nutrient lake

two flagella

mixo-trophic

Question 15

diatoms:
habitat =
primary producer or heterotroph? =
physical charageristic =
can it move? =

Answer 15

benthic zone

primary producer

frustule; silica-based cell wall

no

Question 16

dinoflagellates
habitat =
example =
physical charageristic =
____-trophic

Answer 16

lentic habitat (wetland, stream)

phytoplankton

cellulose plate “armor”

hetero-trophic

Question 17

eugenophyceae:
live in ______ conditions
habitat =
can it move? =

Answer 17

eutrophic (high nutrient)

sediments

yes

Question 18

green algae:
live in ____ conditions
unicellular forms =
multicellular forms attached to =
most ___ group of algae

Answer 18

oligotrophic (low nutrient) or eutrophic (high nutrient)

plankton community

benthic substrates

diverse

Question 19

charophytes
habitat =
live in _____ conditions

Answer 19

wetlands and benthic zones

nutrient poor

Question 20

protozoa
____-trophs
reproduce =
can do ___ cycling
likes _____ enviornment conditions

Answer 20

auto or hetero-trophs
sexually or asexually
carbon
stable

Question 21

fungi
main job =
^ this is important because
habitat =
unicellular forms are ______

Answer 21

decomposers
breaking down detritus feeds low light organisms in water

terrestrial enviornemtns

parasites

Question 22

macrophytes refer to what group

Answer 22

plants

Question 23

plants
are abundant in ______ waters
rooted in ___ substrates
important ____ for fish
how do they get nutrients

Answer 23

shallow, slow-moving

fine

shelter

from the ground

Question 24

non-vascular plants
examples =
streams are _____ and _____
provide _____ for fish

Answer 24

moss and liverworts
small and low nutrient
shelter

Question 25

vascular plants
_____ plants
provide ___ to animales
create ___

Answer 25

flowering

shelter

oxygen