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NTA Abhyas NEET2020BotanyEcosystemPractice

Read the following statements: i. 51% of carbon is found dissolved in oceans. ii. The oceanic reservoir regulates the amount of carbon dioxide in the atmosphere. iii. Some amount of the fixed carbon is lost to sediments and removed from circulation. iv. Carbon constitutes 49% of the dry weight of an organism and it is next only to water.

Options

  1. Ai and ii are true but iii and iv are false
  2. Bi and iii are true but ii and iv are false
  3. Cii and iii are true but i and iv are false
  4. Di and iv are correct but ii and iii are false

Correct answer

C. ii and iii are true but i and iv are false

Step-by-step solution

The carbon cycle is a type of nutrient cycle where the carbon travels from the atmosphere to organism and Earth and back to the atmosphere in various forms like carbon dioxide. From the total carbon content in the biosphere, 71% of it is found dissolved in oceans as oceans absorb a lot of carbon dioxide for photosynthesis by phytoplankton. The oceanic reservoir regulates the carbon dioxide content in the atmosphere via absorption and utilization. From the total carbon available to the organisms, some amount of the

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