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Sharpen your pencils and print out this page. Answer the questions to "Test Your Pond IQ" then compare them with our answers.
Multiple Choice Questions
Circle only one answer per question.
1. The bacterium responsible for converting ammonia to nitrites is
A. Nitrosomonas
B. Nitrobacter
C. PseudomonasD. Aeromonas
2. Curling of the pads on a waterlily indicates the presence of
A. disease
B. too much shade
C. insects
D. could be any of the above
3. A check valve
A. regulates the amount of water that is allowed to flow through the plumbing.
B. prevents water from flowing backwards
C. Both A & B
D. Neither A or B
4. Mechanical filtration refers to
A. a filter placed at the point of water intake to protect the pump.
B. a filter system that runs without electricity.
C. a filter that takes solids out of the water.
D. a filter that houses nitrifying bacteria.
5. A fish brushing himself along the sides or bottom of the pond indicates
A. parasites.
B. irritation to salt.
C. spawning behavior.
D. could be A, B or C.
6. Alkalinity measures
A. the amount of salt in the water.
B. how acidic the water is.
C. how stable the pH is.
D. softness of the water.
7. The dosage of salt used to kill 7 of 10 common parasites is
A. 1 lb. per 100 gallons.
B. 3 lbs. per 100 gallons.
C. 5 lbs. per 100 gallons.
D. 6 lbs. per 100 gallons.
8. Most hardy water lilies prefer which depth?
A. 2 feet
B. 3 feet
C. 4 feet
D. 5 feet
9. Which bacterium does NOT cause ulcer disease?
A. Pseudomonas
B. Nitrobacter
C. Columnaris
D. Aeromonas
10. The biological process of converting unhealthy water to healthy water is called
A. the Ecological Cycle.
B. the Nitrifying Cycle.
C. Photosynthesis.
D. Biosynthesis.
11. Which of the following is NOT a sign of spawning?
A. foaming of water
B. several fish picking on one fish
C. fish wallowing in plants
D. fish hanging around waterfall
12. A white koi with black spots that do not appear on the head is called a
A. Shiro Utsuri.
B. Kohaku
C. Shiro Bekko
D. Sanke
13. Which of the following is NOT a type of parasite?
A. fluke
B. dropsy
C. chilodinella
D. argulus
14. Which country was responsible for “doitzu” koi?
A. Germany
B. Japan
C. America
D. Isreal
15. Which predator poses the least threat to a pond fish?
A. opossum
B. hawk
C. blue heron
D. raccoon
16. Which of the following is NOT a disadvantage of using a side-skimmer system?
A. Fish get caught in the skimmer.
B. It’s hard to hide the skimmer.
C. There is poor water circulation.
D. Debris accumulates on the bottom.
17. Algae bloom is fueled by
A. the amount of sunshine on the pond.
B. dead leaves on the bottom of the pond.
C. fish waste.
D. all of the above.
18. Your pond should be located
A. where it can receive the most sunshine.
B. in a shady, wooded area.
C. away from the house.
D. wherever you can enjoy it most.
19. Which of the following is NOT necessarily an indication that something is wrong with the fish?
A. fish hanging out by the water return
B. one fish isolating itself
C. several fish chasing another
D. red blood streaks in the fins
20. Which water plant is not hardy to Zone 7?
A. parrot’s feather
B. anacharis
C. water lettuce
D. umbrella palm
21. When cleaning the pond you should not
A. clean the muck from the biological filter.
B. scrub the sides of the pond.
C. clean the muck from the bottom.
D. drain most the water out first.
22. Fish that are suddenly afraid to come out of hiding may indicate a problem with
A. predators.
B. water quality.
C. disease.
D. any of the above.
23. Which one of these statements is false?
A. A healthy environment for fish is created by lining the bottom of the pond with rock.
B. Anaerobic bacteria breed in the muck that collects between rocks on the bottom of the pond.
C. It’s tougher to find a leak in the pond if the bottom is lined with rock.
D. Rocks lining the bottom of the pond help keep the pond clear because fish cannot get to the muck on the bottom to stir it up.
24. Which is NOT a factor when trying to establish growth of good bacteria?
A. amount of dissolved oxygen
B. temperature of the water
C. amount of sunlight
D. chlorine in water
25. A bulk head fitting
A. prevents water from flowing in the opposite direction.
B. allows water to be transported through the wall of the pond.
C. regulates the amount of water that can flow through the system.
D. is used to connect the hose to the pump.
True or False?
26. T F A butterfly koi is a cross between a koi and a goldfish.
27. T F External pumps generally use more electricity than gph-comparable submersible pumps.
28. T F Ultraviolet lights are used most commonly to clear up green water.
29. T F Ultraviolet lights may be used to reduce the amount of free-flowing bacteria in the water.
30. T F We stop feeding the fish when water temperatures are 50° or below.
31. T F A pond with fish never needs to be cleaned if it is equipped with proper filtration.
32. T F A liner pond that contains fish only needs filtration that Mother Nature supplies.
33. T F Koi and goldfish can live together peacefully in the same pond.
34. T F A Showa is a Kohaku with black markings on the body but not the head.
35. T F A fancy goldfish has a double tail fin and swims slower than a comet.
36. T F A UV will get rid of string algae and blanket weed.
37. T F You cannot install a bottom drain after the pond has already been built.
38. T F Flex hose is cheaper to use than PVC.
39. T F Pond fish can be trained to eat out of your hand.
40. T F A bead filter is an effective method of both mechanical and biological filtration.
Fill In the Blanks
Use the space below each statement to record your answer.
41. To help protect pond fish from blue herons a pond depth of no less than ____ feet is recommended.
42. The type of food we should feed our fish during the transitional times of fall and spring should contain high contents of _____.
43. Argulus is commonly called _______.
44. ______ is the bacterium responsible for converting nitrites to nitrates.
45. At night plants consume ______ from the water.
46. A low pH reading indicates the water is very ______,
47. If using city water you must remove the _____ from the water before adding fish.
48. A shot of _____ can help to literally bring a stressed fish back to life.
49. You must be careful when handling the tuber of the _____. It’s very delicate.
50. You should always _____ your fish before introducing them into your pond.
Opposites
Choose which word or phrase within the parenthesis that makes the statement true. Underline or circle the correct word or phrase.
51. It’s ( legal / illegal ) to kill a blue heron.
52. The net or pinecone pattern on a koi is called ( ginrin / matsuba ).
53. Clear water ( indicates / does not necessarily mean ) the pond is healthy.
54. Pond plants ( must have / do not need ) soil to survive.
55. Carp pox ( is / is not ) life-threatening to a fish.
56. It’s more likely that a leak will occur in the ( waterfall / bottom drain ).
57. Koi and goldfish ( do / do not ) eat their young.
58. ( All / Not all ) species of frogs eat baby fish.
59. A Ki Ogon is a solid ( red / yellow ) koi.
60. Dragonflies have 3 pairs of ( wings / legs ).
Congratulations! You’ve completed our test. Now click here to check your answers against ours and find out your score.
From the Winter 2001 Edition of What's Up, Doc?, August / Sept / Oct 2001 / © 2001, The Pond Doc's Water Garden Center. All rights Reserved. Reproduction of this article prohibited without prior consent of The Pond Doc.
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