Concerning quot Phytoplankton quot in the ecosystems consider the following statements 1 a...........

Environment and Ecology Concept of Ecosystems

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Concerning "Phytoplankton " in the ecosystems, consider the following statements: 1&2

1. They are agents for primary production.

2. Phytoplankton are crucially dependent on minerals.

3. It release carbon dioxide (CO2) into the water.

Which of the statements given above is/are correct?

1 an 2 only

1 and 3 only

2 and 3 only

All of the above

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Explanation:

Phytoplankton absorb energy from the Sun and nutrients from the water to produce their own food. In the process of photosynthesis, phytoplankton release molecular oxygen (O₂) into the water. It is estimated that between 50% and 85% of the world's oxygen is produced via phytoplankton photosynthesis. Phytoplankton are crucially dependent on minerals. These are primarily macronutrients such as nitrate, phosphate or silicic acid, whose availability is governed by the balance between the so-called biological pump and upwelling of deep, nutrient-rich waters.