Download 11.02.22 nitrogen cycle film quiz

The Nitrogen Cycle
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1. Which are the two main parts of the natural nitrogen
cycle?
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o
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2. Which of the following need nitrogen to survive?
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A) soil
B) plants they eat
C) air they breathe
D) water they drink
Explanation: Wrong
4. Most plants CANNOT use nitrogen _____.
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A) fish
B) plants
C) humans
D) all of the above
Explanation: Wrong
3. Some animals get the nitrogen they need from the
_____.
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A) synthesis and decay
B) legumes and bacteria
C) manure and rotting tissue
D) combining and converting
Explanation: Wrong
A) fixed by bacteria
B) in the pure gas form
C) in the soil where they grow
D) dissolved in the water where they grow
Explanation: Wrong
5. Which thing, in addition to nitrogen-fixing bacteria,
changes nitrogen into a form that is easier for plants to
absorb?
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A) corn
B) animals
C) lightning
D) plant stems
Explanation: Wrong
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6. Where do the nitrogen-fixing bacteria that have a
symbiotic relationship with legumes live?
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7. What happens when there is excess nitrogen in lakes?
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A) They live freely in the soil.
B) They live in the legumes’ leaves.
C) They live in nodules on the legumes’ roots.
D) They live in the carbohydrates produced by the legumes.
Explanation: Wrong
A) Fish grow fast and eat up all the available food.
B) Water plants grow fast and rob the water of its dissolved oxygen.
C) Other bacteria kill off the nitrogen-fixing bacteria present in the
water.
D) Water plants die because they can’t use the form of nitrogen found
in the water.
Explanation: Wrong
8. When nitrogen pollution in the air combines with water
in the atmosphere, it often returns to the earth as _____.
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A) fertilizer
B) acid precipitation
C) excess nitrogen gas
D) denitrifying bacteria