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The Agulhas current acts as an oceanic convergence zone. This zone has higher primary productivity than surrounding waters. This is because
1. The zone is a meeting point of all major ocean currents of the Indian Ocean.
2. There is an upwelling of cold ocean water from the lower layers of the ocean.
Which of the above is/are correct?
  • a)
    1 only
  • b)
    2 only
  • c)
    Both 1 and 2
  • d)
    None of the above
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
The Agulhas current acts as an oceanic convergence zone. This zone ha...
Explanation:

The Agulhas current flows down the east coast of Africa and around the tip of South Africa before continuing into the southern Atlantic Ocean. It is a powerful flow of warm water that acts as an oceanic convergence zone where many different ocean currents meet and mix. This convergence zone has higher primary productivity than surrounding waters, which means that there is a greater abundance of plant and animal life in this area.

The reasons for this higher primary productivity are as follows:

Upwelling of cold ocean water: The Agulhas current is a warm ocean current that flows southwards along the east coast of Africa. However, there is also an upwelling of cold ocean water from the deeper layers of the ocean that occurs in this area. This cold water is rich in nutrients that support the growth of phytoplankton, which in turn supports the entire food chain.

Incorrect option: 1 only
The statement that the zone is a meeting point of all major ocean currents of the Indian Ocean is incorrect. The Agulhas current is not a meeting point of all major ocean currents of the Indian Ocean, but rather a flow of warm water that originates in the Indian Ocean and flows into the Atlantic Ocean.

Therefore, option B - 2 only is the correct answer.
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Community Answer
The Agulhas current acts as an oceanic convergence zone. This zone ha...
Agulhas current is a major Indian Ocean current.
  • A convergence zone is a region in the atmosphere where two prevailing flows meet. It is not a meeting of all major ocean currents.
  • There is an upwelling of cold, nutrient-rich water south of the current. Additionally, the convergence tends to increase the concentration of plankton in and around the Agulhas.
Both Of These factors result in the area being one of enhanced primary productivity as compared to the surrounding waters.
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The Agulhas current acts as an oceanic convergence zone. This zone has higher primary productivity than surrounding waters. This is because 1. The zone is a meeting point of all major ocean currents of the Indian Ocean.2. There is an upwelling of cold ocean water from the lower layers of the ocean.Which of the above is/are correct? a) 1 onlyb) 2 onlyc) Both 1 and 2d) None of the aboveCorrect answer is option 'B'. Can you explain this answer?
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