True or False Questions

1.      Crayfish give birth to live young.

2.      Scuds are more closely related to the dragonfly than any other aquatic organism.

3.      Annelids have an exoskeleton.

4.      Leeches are considered to be detritivores.

5.      There are no parasitic aquatic life forms.

6.      Gilled snails are found in highly polluted waters.

7.      Platyhelminthes are members of the Phylum  Mollusca.

8.      The Asian clam is considered to be an invasive species in Arkansas.

9.      Maryland has more acres of estuaries than Arkansas does.

10.  Aquatic earthworms are burrowers for the most part.

11.  Climbing benthic organisms are adapted to climbing on submerged aquatic plants.

12.  There are no invasive mussel species in the United States.

13.  Snails and mussels are related species.

14.  A buffalo gnat is a livestock pest as an adult.

15.  EPT refers to three import orders of aquatic insects.

16.  Clay particles in a suspension are larger in size than silt particles.

17.  Some insect larvae live on the bottom of water lily leaves.

18.  A river can go from a first order stream to a second order stream to at least a third order stream as it grow in size.

19.  Several larvae of caddisflies build a house called a case to live in from debris or gravel.

20.   Current can be measured in cubic feet per second.

 

                                      Multiple Choice Questions

21.  Caddisfly larvae are found in ______ water.

A. oxygenated     B. polluted     C. dry     D. still     E. none of the above

22.  Streams have _____ in their organization.

A. gradients     B. flow regime    C. orders    D. overfalls    E. alluvium

23.  The hydrologic cycle involves _____ as one of the processes.

A. snowfall    B. nitrification    C. alluviation    D. precipitation    E. elluviation

24.  Organic matter can be classified by the abbreviations ________.

A. FWOD    B. FPOM    C. LWOD    D. K2O5    E. NST

25.  A region of shallow fast water in a stream is referred to as a _____.

A. pool    B. bankfull    C. bedrock    D. overfall    E. riffle

26.  Lotic and lentic refers to ________ of water.

A. quality    B. salinity    C. bodies    D. pollution     E. gradients

27.  Another word for Platyhelminthes is ______.

A. roundworm     B. crayfish    C. earthworm    D. scuds    E. flatworm

28.  Invertebrates have a/an ________.

A. carpels     B. caudates   C. exoskeleton    D. tarsals     E. phalanges

29.  A perch is an example of a ______ fish.

A. bony    B. cartiliginous    C. slimy     D. anadromous     E. catadromous

30.  The demand for oxygen by animals in a stream is referred to as ______.

A. EOD     B. MOD     C. COD     D. BOD     FOD

31.  An Arabic word for a stream course is _______.

A. arroyo    B. fen     C. argillic    D. tsunami     E. wadi

32.  A shallow sound or pond connected to the sea is a/an ______ .

A. lagoon     B. estuary     C. slough     D. tidal flat     E. fen

33.  An aquatic plant such as a water fern can also be called a/an ______.

A. obligate    B. micro    C. salvinia     D. macrophyte     E. detritius

34.  Bogs have a preponderance of _____ growing in them.

A.  trees    B. mosses    C. grasses     D. sedges     E. no plants

35.  Aquatic plants take in ____ and give off oxygen.

A. K205     B. HPO4     C. NO4     D. CO2     E. O2

36.  Crawling aquatic insects require a _____ substrate.

A. firm      B. fine sediment     C. coarse    D. steep     E. grassy

37.  Mollusks move by mean of a ______.

A. wing     B. stem     C. gill flow     D. foot     E. fin

38.  There are _____  major divisions of  aquatic snails.

A. six     B. five    C. four     D. three    E. two

39.  The most effective tool to collect macroinverterates is the _______.

A. net     B. secchi disk     C. hand     D. surber    E. gill net

40. Adult crane flies resemble large ______.

      A. flies     B. damselfly     C. ant lions     D. mosquitoes     E. dobsonflies