NEET UG Botany — Ecosystem previous year questions with solutions.
Presence of plants arranged into well-defined vertical layers depending on their height can be seen best in:
Which of the following ecosystem has the maximum amount of biomass production?
Which of the following is correctly matched?
The term ecosystem was coined by:
Select the pairs of sedimentary biogeochemical cycles. I. Hydrogen cycle and water cycle II. Phosphorus Cycle and sulphur cycle III. Calcium cycle and magnesium cycle IV. Carbon cycle and nitrogen cycle
Which one of the following is a characteristic feature of cropland ecosystem?
Most animals that live in deep oceanic waters are:
An association of individuals of different species living in the same habitat and having functional interactions is:
The mass of living material at a trophic level at a particular time is called:
In which of the following both pairs have correct combination?
In an ecosystem the rate of production of organic matter during photosynthesis is termed as:
Vertical distribution of different species occupying different levels in a biotic community is known as:
If 20J of energy is trapped at producer level, then how much energy will be available to peacock as food in the following chain? plant $\rightarrow$ mice $\rightarrow$ snake $\rightarrow$ peacock
Given below is a simplified model of phosphorus cycling in a terrestrial ecosystem with four blanks (A-D). Identify the blanks. 
Natural reservoir of phosphorus is
Benthic organisms are affected the most by:
Secondary productivity is rate of formation of new organic matter by
Which of the following is a primary consumer in maize field ecosytem?
When man eats fish which feeds on zooplanktons which have eaten small plants, the producer in this chain is:
The age pyramid with broad base indicates:
Which one of the following processes during decomposition is correctly described?
Which one of the following is not a gaseous biogeochemical cycle in ecosystem?
Which one of the following is not a functional unit of an ecosystem?
The second stage of hydrosere is occupied by plants like