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Class XII Biology Organisms and Populations 4
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Question 1
The most ecologically relevant environmental factor is-
Question 2
Salt concentration (measured as salinity in parts per thousand) in the sea is
Question 3
Which part of lake receives maximum light above light compensation point?
Question 4
Which of the following pair of characters contribute an increase in population density?
Question 5
In logistic growth model, a population shows asymptote at
Question 6
The subsoil remains frozen except upper few inches in the summers. This characteristic belongs to the biome-
Question 7
The figure below demonstrates the growth curves of two organisms A and B growing in the same area. What kind of relation exists between A and B?
Question 8
Find the odd one out (w.r.t. population interactions)
Question 9
The phenomenon of inhibition of growth of one species-by other species through secretion of certain chemicals or poison is termed as
Question 10
Small fish get stuck near the bottom of a shark and derives its nutrition from it. This kind of association is called as
Question 11
Lichens are
Question 12
The biomass available for consumption by the herbivores and the decomposers is called
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Apr 8NEET & AIIMS