Q: (IAS/2021)
question_subject:
Ecology
question_exam:
IAS
stats:
0,214,65,18,214,32,15
keywords:
{'primary producers': [0, 0, 0, 1], 'organisms': [4, 1, 3, 2], 'cyanobacteria': [1, 0, 1, 2], 'oceans': [8, 1, 8, 19], 'food chains': [0, 0, 0, 1], 'copepods': [0, 0, 0, 1], 'foraminifera': [1, 0, 0, 1], 'diatoms': [0, 1, 0, 0], 'kinds': [1, 0, 3, 7]}
Among the given kinds of organisms, only Cyanobacteria (2) are primary producers in the food chains of oceans. Therefore, the correct option is 2 and 3.
Copepods: They are tiny crustaceans that feed on phytoplankton and are themselves eaten by larger animals. They are not primary producers.
Cyanobacteria: They are photosynthetic bacteria and are one of the primary producers in the ocean.
Diatoms: They are a type of algae that are also primary producers in the ocean.
Foraminifera: They are single-celled organisms that are not primary producers as they do not produce their food.