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The tiger census in Indian reserves is often based on:

AHead count
BPug marks
CCamera traps
DSatellite
Answer & Solution
Correct answer: B. Pug marks
1. Tigers are hard to count directly. 2. Pug marks and faecal pellets are used. 3. This estimates density indirectly. _Source: syllabus Biology, Chapter 13, Organisms and Populations._
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