Midterm I

Question 1

What are the 4 freshwater feeding groups?

Answer 1

Shredders, Collectors, Grazers, Predetors

Question 2

Describe the river continuum

Answer 2

look at river continuum diagram

Question 3

Describe the main characteristics of the phylum

arthropoda

Answer 3

3 pairs of legs, 3 body parts, open circulatory system, breath using spiracles, chitinous exoskeleton

Question 4

Difference between holo and hemi metabolism?

Answer 4

Holo- larve,pupae, metamorphosis. Hemi-nymphs, no pupal stage

Question 5

what are some ecological trends are insects?

Answer 5

species richness and latitude, altitude variation, emdimism

Question 6

what is diffusion breathing?

Answer 6

“circular respiration” common in those with thin body wall or larve

Question 7

What is scuba tanks in terms of breathing strategies?

Answer 7

an air bubble that is trapped against the the body and gas exchange proceeds via spiracles

Question 8

What is a breathing tube? Examples of organisms?

Answer 8

it’s a snorkel, sometimes taps into vacuoles of plants.

examples

Question 9

What is a plaston breathing system? Example of orgamisns

Answer 9

densely packed hydrophobic setae trap air bubble against body, consumption of the o2 creates a negative pressure w/ in the air space which drive o2 out of water into bubble
riffle beatle

Question 10

what is diapause?

Answer 10

state of low metabolic activity

Question 11

3 main players in aquatic microbes

Answer 11

bacteria, archea, protists

Question 12

3 main players in aquatic microbes

Answer 12

bacteria (Cynobacteria), archea, protists

Question 13

main characteristics of cyanobacteria

Answer 13

photosynthesis, called blue green algae, fix nitrogen

Question 14

Main characteristics is achea?

Answer 14

Extreme, halophile salt, thermophile heat, methanoges oxygen free

Question 15

4 main protist groups?

Answer 15

chromalveolata, rhizaria, archeaoplastida, unikonta

Question 16

4 main protist groups?

Answer 16

chromalveolata, rhizaria, archeaoplastida, unikonta

Question 17

Alveolates?

Answer 17

Dinoflagella, red blooms

Question 18

Rhizaria?

Answer 18

made of silica, major component of ooze on sea floor

Question 19

Stamenophiles?

Answer 19

most important primary producer in ocean unicellular photosynthetic

Question 20

Archaeoplatida?

Answer 20

red algae and green algae

Question 21

Archaeoplatida?

Answer 21

red algae and green algae

Question 22

Diel vertical migration?

Answer 22

moving up at night and down during the day

Question 23

3 symbiotic relationships with aquatic microbes

Answer 23

zooxanthellae and coral
giant tube worm and chemosynthetic bacteria
luminous bacteria and f deep sea fish