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PHOSPHORUS CYCLE
Test Description: PHOSPHORUS CYCLE TEST
Instructions: Answer all questions to get your test result.
1) . Which one of the following is a major constituent of biological membranes, nucleic acids, and cellular energy transfer systems?
A
POTASSIUM
B
PHOSPHORUS
C
COBALT
D
SELENIUM
2) Which of the following component is used to make shells, bones, and teeth by animals?
A
GALLIUM
B
ARGON
C
SODIUM
D
PHOSPHORUS
3) Who is the natural reservoir of phosphorous?
A
ROCKS
B
DEAD ORGANISMS
C
ATMOSPHERIC GASES
D
WATER
4) Which element is not released during respiration in the atmosphere?
A
NITROGEN
B
COBALT
C
PHOSPHORUS
D
CARBON
5) How is the gaseous exchange of phosphorus between organisms and the environment?
A
NEGLIBIBLE
B
MODERATE
C
MAXIMUM
D
NO EXCHANGE
6) Which one of the following is the simplified sequence of phosphorus cycling in a terrestrial ecosystem?
A
Decomposers → Rock minerals → Consumers → Producers
B
Soil → Producers → Rock minerals → Consumers → Decomposers
C
Rock minerals → Decomposers → Producers → Consumers
D
Rock minerals → Soil → Producers → Consumers → Decomposers
7) How do herbivores and other animals obtain phosphorous?
A
SOIL
B
PLANTS
C
WATER
D
ROCKS
8) Which of the biochemical cycle is without an atmospheric component?
A
PHOSPHORUS CYCLE
B
NITROGEN CYCLE
C
OXYGEN CYCLE
D
CARBON CYCLE
9) Which of the following is a major constituent of DNA and RNA?
A
CALCIUM
B
COBALT
C
SELENIUM
D
PHOSPHORUS
10) Which biogenetic element is obtained from crystalline rocks?
A
ARGON
B
MAGNESIUM
C
PHOSPHORUS
D
HELIUM
*select an answer for all questions
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