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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
SELENIUM
B
COBALT
C
PHOSPHORUS
D
POTASSIUM
2) Which of the following component is used to make shells, bones, and teeth by animals?
A
SODIUM
B
ARGON
C
PHOSPHORUS
D
GALLIUM
3) Who is the natural reservoir of phosphorous?
A
WATER
B
ROCKS
C
ATMOSPHERIC GASES
D
DEAD ORGANISMS
4) Which element is not released during respiration in the atmosphere?
A
PHOSPHORUS
B
CARBON
C
COBALT
D
NITROGEN
5) How is the gaseous exchange of phosphorus between organisms and the environment?
A
NO EXCHANGE
B
MAXIMUM
C
MODERATE
D
NEGLIBIBLE
6) Which one of the following is the simplified sequence of phosphorus cycling in a terrestrial ecosystem?
A
Soil → Producers → Rock minerals → Consumers → Decomposers
B
Rock minerals → Soil → Producers → Consumers → Decomposers
C
Decomposers → Rock minerals → Consumers → Producers
D
Rock minerals → Decomposers → Producers → Consumers
7) How do herbivores and other animals obtain phosphorous?
A
WATER
B
PLANTS
C
SOIL
D
ROCKS
8) Which of the biochemical cycle is without an atmospheric component?
A
PHOSPHORUS CYCLE
B
CARBON CYCLE
C
OXYGEN CYCLE
D
NITROGEN CYCLE
9) Which of the following is a major constituent of DNA and RNA?
A
PHOSPHORUS
B
CALCIUM
C
SELENIUM
D
COBALT
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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