1,015 Questions
Biology
Practice Biology MCQs from the Science syllabus.
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ScienceHard
Biology
Ecology
'Eutrophication' leads to the depletion of which substance in water?
ScienceHard
Biology
Ecology
In a food web, if the primary productivity is 1000 units, how much energy reaches the secondary consumers?
ScienceHard
Biology
Ecology
Which zone of a lake is characterized by the absence of light and producers?
ScienceHard
Biology
Ecology
Which term refers to the maximum reproductive capacity of an organism under optimal conditions?
ScienceHard
Biology
Ecology
What is the term for a group of different populations living together and interacting in an area?
ScienceHard
Biology
Ecology
What is the name of the process where nitrates are reduced to nitrogen gas by bacteria?
ScienceHard
Biology
Ecology
Which of the following is a 'Top-down' control in an ecosystem?