Ecology and Environment
Government Legislature
MCQ (Single Correct Answer)
Government Initiatives
MCQ (Single Correct Answer)
International Convention
MCQ (Single Correct Answer)
1
UPSC Civil Service Prelims Paper I 2021 (General Studies)
MCQ (Single Correct Answer)
+2
-0.66
In case of which one of the following biogeochemical cycles, the weathering of rocks is the main source of release of nutrient to enter the cycle?
A
Carbon cycle
B
Nitrogen cycle
C
Phosphorus cycle
D
Sulphur cycle
2
UPSC Civil Service Prelims Paper I 2021 (General Studies)
MCQ (Single Correct Answer)
+2
-0.66

Which one of the following is a filter feeder?

A
Catfish
B
Octopus
C
Oyster
D
Pelican
3
UPSC Civil Service Prelims Paper I 2021 (General Studies)
MCQ (Single Correct Answer)
+2
-0.66

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?

A
1 and 2
B
2 and 3
C
3 and 4
D
1 and 4
UPSC Civil Service Subjects
History of India
Science and Technology
Geography
Ecology and Environment
Indian Polity and Governance
Economy
Current Affairs
Comprehension
Basic Numeracy
Logical Reasoning and General Mental Ability
Data Interpretation and Sufficiency