EASY
Earn 100

Select the pairs of sedimentary biogeochemical cycles.
I. Hydrogen cycle and water cycle
II. Phosphorus Cycle and sulphur cycle
III. Calcium cycle and magnesium cycle
IV. Carbon cycle and nitrogen cycle

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Important Questions on Ecosystem

EASY
Biology>Ecology>Ecosystem>Nutrient Cycles
In which of the following both pairs have correct combination?
EASY
Biology>Ecology>Ecosystem>Nutrient Cycles
Differentiate between the carbon cycle and phosphorus cycle that operate in nature by giving two points.
HARD
Biology>Ecology>Ecosystem>Nutrient Cycles
Give an account of the phosphorus cycle of an ecosystem.
EASY
Biology>Ecology>Ecosystem>Nutrient Cycles
Which one of the following will accelerate phosphorus cycle?
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Biology>Ecology>Ecosystem>Nutrient Cycles
The oceanic carbon reservoir constitutes
HARD
Biology>Ecology>Ecosystem>Nutrient Cycles
Represent the phosphorus cycle with a word diagram. 
EASY
Biology>Ecology>Ecosystem>Nutrient Cycles
Write Carbon cycle.
EASY
Biology>Ecology>Ecosystem>Nutrient Cycles
Which is essential for the growth of the root tip?
MEDIUM
Biology>Ecology>Ecosystem>Nutrient Cycles
Describe the model of the phosphorous cycle in the terrestrial ecosystem.
EASY
Biology>Ecology>Ecosystem>Nutrient Cycles

Fill in the blank with the correct option from the bracket.

The major reservoir of carbon on Earth is _____. (soil, ocean, atmosphere)

EASY
Biology>Ecology>Ecosystem>Nutrient Cycles
Biogeochemical cycle having a small gaseous component is found in ___.
MEDIUM
Biology>Ecology>Ecosystem>Nutrient Cycles
Which of the following statements is incorrect regarding the phosphorus cycle?
MEDIUM
Biology>Ecology>Ecosystem>Nutrient Cycles
Which process is unidirectional in nitrogen cycle?
MEDIUM
Biology>Ecology>Ecosystem>Nutrient Cycles
In a recent forest fire at the silent valley, phosphorous from the dead organisms was released into the soil due to a specific organism. Name the organism.
EASY
Biology>Ecology>Ecosystem>Nutrient Cycles
Name any one symbiotic nitrogen fixing bacteria. How does it help in nitrogen fixation?
MEDIUM
Biology>Ecology>Ecosystem>Nutrient Cycles

Match the following concerning essential elements and their functions in plants

(a) Iron (i) Photolysis of water
(b) Zinc (ii) Pollen germination
(c) Boron (iii) Required for chlorophyll biosynthesis
(d) Manganese (iv) IAA biosynthesis

Select the correct option.

EASY
Biology>Ecology>Ecosystem>Nutrient Cycles
Deficiency symptoms of nitrogen and potassium are visible first in:
EASY
Biology>Ecology>Ecosystem>Nutrient Cycles
Schematically represent phosphorous cycle.
EASY
Biology>Ecology>Ecosystem>Nutrient Cycles

Which one of the following element never goes to the atmosphere?

EASY
Biology>Ecology>Ecosystem>Nutrient Cycles

Given below is a simplified model of phosphorus cycling in a terrestrial ecosystem with four blanks (A-D). Identify the blanks.

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