Why are phytoplanktons more important in pond ecosystem than larger plants?

Explanation

### Step-by-Step Solution:

1. **Definition of Phytoplankton**:
- Phytoplanktons are microscopic organisms that live in aquatic environments. They are classified as producers or autotrophs because they can produce their own food through photosynthesis.

2. **Role in Photosynthesis**:
- As photosynthetic organisms, phytoplanktons utilize sunlight to convert solar energy into chemical energy. This process not only generates food for themselves but also produces oxygen as a byproduct.

...