Give scientific reasons: Chrysophytes are considered as the chief producers in the ocean.

(N/A) $\rightarrow$ Chrysophytes include diatoms and golden algae (desmids). They are microscopic and float passively in water currents as phytoplanktons. Because they are photosynthetic and present in massive numbers in both marine and freshwater environments,they serve as the primary source of energy for aquatic food chains,making them the chief producers in the oceans.