Consider the following kinds of organisms: 1. Copepods 2. Cyanobacteria 3. Diatoms 4. Foraminifera Which of the above are primary producers in the food chains of oceans?

উত্তর দেখান ও ব্যাখ্যা

উত্তর: (B) 2 and 3

ব্যাখ্যা

Cyanobacteria and diatoms photosynthesise. Copepods are zooplankton, and foraminifera are mostly heterotrophic protists.