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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
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Which one of the following element never goes to the atmosphere?
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Match the following
| List - I | List - II | ||
| (a) | Chlorine | (i) | Helps to maintain an anion - cation balance and is involved in protein synthesis |
| (b) | Sulphur | (ii) | Helps in determining the solute concentration. |
| (c) | Potassium | (iii) | It is the main constituent of several coenzymes and vitamins |
| (d) | Nickel | (iv) | Found to induce disease resistance in some plants. |
| (v) | Structural component of Cytochrome oxidase |
The correct answer is
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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.
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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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Fill in the blank with the correct option from the bracket.
The major reservoir of carbon on Earth is _____. (soil, ocean, atmosphere)
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Given mineral ions essential for the physiological activities of plant
Nitrogen metabolism
Synthesis of Auxins
Activation of IAA oxidase enzyme
Formation of Mitotic spindle
Answers respectively
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