Week 3

Question 1

what are the bases of the food web

Answer 1

photosynthetic algae and cyanobacteria

Question 2

photosynthetic algae and cyanobacteria are also commonly called ________

Answer 2

phytoplankton

Question 3

what resists phytoplankton from sinking

Answer 3

horms, spines and setae are used to increase surface area

Question 4

what are zooplankton

Answer 4

wide variety of planktonic organisms that live in lakes, ponds and rivers

Question 5

zooplankton are an important food for what organisms

Answer 5

young of year fish- larval stage

Question 6

T or F: planktonic animals can be found in almost all animal phyla

Answer 6

T

Question 7

what are the three major groups of zooplankton

Answer 7

rotifers, cladocera and copepoda

Question 8

what are some characteristics of rotifers

Answer 8

mostly sessile, omnivorous, filter feeding with corona

Question 9

what is a corona

Answer 9

rotifer feeder, looks like a crown

Question 10

what are some characteristics of cladocera

Answer 10

bivalve carapace (can split into two), swin using large second antennae, filter phytoplanktom, rostrum at front of the body

Question 11

T or F: cladocera reproduce in large number

Answer 11

T, hold eggs in their back pouch

Question 12

what are the two major groups of copepoda and how can you distinguish the two

Answer 12

Cyclopoids: first antenna much shorter than the body
Clanoids: first antenna about as long as body

Question 13

define invasive species

Answer 13

species introduced to regions outside their historic native range

Question 14

what are the filters in terms of invasive species

Answer 14

biogeographic, physiological (chemical and physical), and biotic (competitors and predator)

Question 15

Invasive species are a major threat in what area of the world

Answer 15

freshwater lakes

Question 16

what is the most common invasion vector

Answer 16

ships!!!!!!

Question 17

In the paper by Carpenter and Zanden, what was the goal of the paper

Answer 17

to highlight how invasive species and ecosystem services are often not appreciated

Question 18

In the paper by Carpenter and Zanden, where did it takeplace?

Answer 18

Lake mendota

Question 19

In the paper by Carpenter and Zanden, what was the invasice species

Answer 19

spiny water flea, bythotrephes

Question 20

In the paper by Carpenter and Zanden, how was water clarity measured

Answer 20

secchi depth

Question 21

In the paper by Carpenter and Zanden, what season was it most affected?

Answer 21

fall