Nitrogen Cycle Flashcards
1
Q
How do plants take in nitrates?
A
Active transport- roots
2
Q
How do animals get nitrates?
A
They eat the plant
3
Q
What converts dead animal/plant matter to ammonia?
A
Decomposers
4
Q
What does the nitrifying bacteria do?
A
Ammonia—> Nitrites—> Nitrates (in soil)
5
Q
What do denitrifying bacteria do?
A
Nitrates—> Nitrogen (in air)
6
Q
Where are nitrogen fixing bacteria found?
A
Legumes
7
Q
Examples of legumes?
A
Peas
Beans
8
Q
What do nitrogen fixing bacteria do?
A
Convert nitrogen to nitrates.
9
Q
Why do farmers plant legumes?
A
They have nitrogen fixing bacteria.
These leave an excess of nitrates in the soil.
Plants that grow after will grow better.
CROP ROTATION
10
Q
What does lightning add to the soil?
A
Nitrates
11
Q
Stages of nitrogen cycle:
A
Nitrogen in air Nitrogen fixing bacteria Nitrates in soil Nitrates in plant Nitrates in animal Plant/animal dies Decomposers Nitrates in soil Denitrifying bacteria Nitrates in air
