Ecosystem PYQ — Page 3
NEET UG Botany — Ecosystem previous year questions with solutions.
All Ecosystem Questions (84)
The upright pyramid of number is absent in
Which one of the following is not a functional unit of an ecosystem?
The second stage of hydrosere is occupied by plants like
Which one of the following is not a gaseous biogeochemical cycle in ecosystem?
Given below is an imaginary pyramid of numbers. What could be one of the possibilities about certain organisms at some of the different levels? 
The breakdown of detritus into smaller particles by earthworm is a process called
Which one of the following statements is correct for secondary succession?
Which one of the following statements for pyramid of energy is incorrect, whereas the remaining three are correct?
Of the total incident solar radiation the proportion of PAR is
What type of human population is represented by the following age pyramid? 
Mass of living matter at a trophic level in an area at any time is called
Eutrophication is often seen in
Which of the following representations shows the pyramid of numbers in a forest ecosystem?    
A renewable exhaustible natural resource is
The biomass available for consumption by the herbivores and the decomposers is called
Reduction in vascular tissue, mechanical tissue and cuticle is characteristic of :
Which one of the following types of organisms occupy more than one trophic level in a pond ecosystem ?
Which one of the following types organisms occupy more than one trophic level in a pond ecosystem ?
Reduction in vascular tíssue, mechanical tissue and cuticle is characteristic of
The correct sequence of plants in a hydrosere is
Consider the following statements concerning food chains A. removal of $80 \%$ tigers from an area resulted in greatly increased growth of vegetation B. removal of most of the carnivores resulted in an increased population of deers C. the length of food chains is generally limited to 3-4 trophic levels due to energy loss D. the length of food chains may vary from 2 to 8 trophic levels Which two of the above statements are correct?
The slow rate of decomposition of fallen logs in nature is due to their
About $70 \%$ of total global carbon is found in
Quercus species are the dominant component in