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Biology · 2025 · 3 marks
CBSE 2025 · Region 2 · Set 3 · Q28
Study the pie chart given below, representing the global biodiversity and proportionate number of species of major taxa. Answer the following…
Study the pie chart given below, representing the global biodiversity and proportionate number of species of major taxa.
Answer the following questions :
(a)
Identify 'X' and 'Y' in the given pie chart.
(b)
Which one of the two 'X' or 'Y', is the most species-rich taxonomic group and by what percentage ?
(c)
Name the level of Biodiversity represented by the following :
(i)
Estuaries and alpine meadows in India
(ii)
The medicinal plant Rauwolfia vomitoria.
Marking-scheme solution
(a)
-‘x’ is Insects
-‘y’ is Molluscs
(b)
-‘x’ is most species rich taxonomic group
-more than $\displaystyle 70$% of the total animals.
(c)(i)
Ecological diversity
(ii)
Genetic diversity
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CBSE Class 12 Biology past-paper question from the 2025 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.