Green phytoplankton are kept in which kingdom of five kingdom classification system

Options

A. Kingdom monera
B. Kingdom Protista
C. Kingdom plantae
D. Kingdom fungi.

Answer

**Step-by-Step Solution:**

1. **Understanding the Five Kingdom Classification System**: The five kingdom classification system proposed by Whittaker includes the kingdoms: Monera, Protista, Fungi, Plantae, and Animalia. Each kingdom has specific characteristics that define the organisms within it.

2. **Identifying the Characteristics of Each Kingdom**:
- **Monera**: This kingdom consists of prokaryotic organisms, which are unicellular and lack a defined nucleus.
- **Protista**: This kingdom includes eukaryotic organisms, which can be unicellular or multicellular. It encompasses a diverse group of organisms, including those that are photosynthetic.
- **Fungi**: This kingdom consists of multicellular eukaryotes that are heterotrophic and have cell walls made of chitin.
- **Plantae**: This kingdom includes multicellular eukaryotic organisms that are autotrophic, meaning they can produce their own food through photosynthesis.
- **Animalia**: This kingdom consists of multicellular eukaryotes that are heterotrophic and do not have cell walls.

3. **Identifying Green Phytoplankton**: Green phytoplankton are primarily photosynthetic organisms that live in aquatic environments. They are essential for the ecosystem as they produce oxygen and serve as a food source for various aquatic organisms.

4. **Determining the Correct Kingdom**: Given that green phytoplankton are photosynthetic and eukaryotic, they fit the criteria for the kingdom Protista. This kingdom includes photosynthetic protists, which are a major component of phytoplankton.

5. **Conclusion**: Therefore, green phytoplankton are classified under the kingdom **Protista**.

**Final Answer**: Green phytoplankton are kept in the kingdom **Protista**.

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