According to International Union for Conservation of Nature IUCN rsquo s Red Data Book which of the ...........

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According to International Union for Conservation of Nature (IUCN)’s Red Data Book, which of the following statement (s) is/are incorrect?

1. When a taxon does not qualify for critically endangered, Endangered, Vulnerable, near threatened, then it is categorized under Extinct.

2. A taxon is ‘critically endangered’ if its population is reducing over 90% for the last 10 years or the current number of matures is less than 50.

Select the correct answer using the codes given below

1 only

2 only

Both 1 and 2

Neither 1 nor 2

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Explanation:

1st statement is incorrect because if a taxon is Least Concern when it has been evaluated against the criteria and does not qualify for Critically Endangered, Endangered, Vulnerable or Near Threatened.
EXTINCT (EX)
A taxon is Extinct when there is no reasonable doubt that the last individual has died. A taxon is presumed Extinct when exhaustive surveys in known and/or expected habitat, at appropriate times (diurnal, seasonal, annual), throughout its historic range have failed to record an individual. Surveys should be over a time frame appropriate to the taxon's life cycle and life form.