CBSE 2025 · Region 1 · Set 2 · Q23 · 3 marks
The great German naturalist and geographer Alexander Von Humboldt observed that within a region species richness increased with increasing explored area, but only upto a limit.(a)For the above situation, construct a graph and write an equation.(b)Also write various values of Z (regression coefficient).
The great German naturalist and geographer Alexander Von Humboldt observed that within a region species richness increased with increasing explored area, but only upto a limit.
(a)
For the above situation, construct a graph and write an equation.
(b)
Also write various values of Z (regression coefficient).
Marking-scheme solution
(a)
-Equation
\[\log \mathrm{S}=\log \mathrm{C}+\mathrm{Z} \log \mathrm{~A} / \mathrm{S}=\mathrm{CA}^{\mathrm{Z}}
\]
(b)
$\displaystyle \mathrm{Z}=$ in range of $\displaystyle 0.1$ to $\displaystyle 0.2$ regardless of taxonomic group or the region /
$\displaystyle \mathrm{Z}=0.6$ to $\displaystyle 1.2$ for the entire continent / $\displaystyle \mathrm{Z}=1.15$ frugivorous birds and mammals in the tropical forests.
Biodiversity and ConservationBiodiversityApplyshort_answermedium
More from Biodiversity and Conservation
- Enlist two criteria that are used to identify a region for maximum protection as 'Biodiversity hotspots'.…2022 · asked 3×
- Given below is a pie chart representing global diversity of vertebrates. Redraw the pie chart identifying the…2024 · asked 3×
- According to a recent wildlife report, the biggest threat to the tiger's survival in Mudumalai Tiger Reserve…2025 · asked 3×
- India has only 2.4% of the world's land area but its share of the global species diversity is:2025 · asked 3×
- Tropical regions harbour more species than the temperate regions. How have biologists tried to explain this…2024 · asked 3×
- Which of the following sacred groves is found in Meghalaya?2026 · asked 3×
- There are many animals, which have become extinct in the wild, but continue to be maintained in zoological…2026 · asked 3×
- Given below is a picture of a natural large habitat that is being continuously broken into smaller patches.…2022 · asked 3×
CBSE Class 12 Biology past-paper question from the 2025board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.