The main source of energy for phytoplankton is sunlight. Through the process of photosynthesis, phytoplankton absorb sunlight and use it to convert carbon dioxide and water into glucose and oxygen, providing them with energy to grow and reproduce. In Antarctica, the cold, nutrient-rich waters enhance this process, making phytoplankton a vital component of the food chain and a significant contributor to carbon absorption. Sunlight is thus essential not only for sustaining phytoplankton but also for supporting the entire Antarctic ecosystem, which relies on these microscopic organisms as a primary food source.
This question related to Chapter 3 English Vistas Class 12th NCERT.
From the Chapter 3. Journey to the End of the Earth.
Give answer according to your understanding.
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Phytoplankton rely on sunlight for photosynthesis, which is essential to their role in the ecosystem. Therefore option C is correct answer.
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