CBSE 2022 · Region 3 · Set 1 · Q10 · 3 marks
(a)Write the inference drawn by Alexander von Humboldt after his extensive explorations of South American jungle.(b)Study the graph given below :
As per Alexander von Humboldt, what do the symbols S, A, Z and C in the graph stand for, in respect of a species and area relationship ?
(a)
Write the inference drawn by Alexander von Humboldt after his extensive explorations of South American jungle.
(b)
Study the graph given below :
As per Alexander von Humboldt, what do the symbols S, A, Z and C in the graph stand for, in respect of a species and area relationship ?
Marking-scheme solution
(a)
Species richness increased with increasing explored area up to a limit (b) S = Species richness Z = Slope of the line /regression coefficient A = Area C = Y-intercept
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CBSE Class 12 Biology past-paper question from the 2022board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.