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Q.
Number of red list categories prepared by WCU (IUCN) is
Biodiversity and Conservation
Solution:
Number of red list categorised by WCU (World Conservation Union) old name IUCN into $ 8 $ categories
(i) Extinct,
(ii) Extinct in wild,
(iii) Critically endangered,
(iv) Endangered,
(v) Vulnerable,
(vi) Lower risk,
(vii) Data deficient,
(viii) Not evaluated.