Red Data Book deals with

(a) plants on the verge of extinction

(b) endemic Plant

(c) plants showing photoperiodism

(d) plants that are extinct

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1 Answers

Correct option (a) plants on the verge of extinction

Explanation :

Red Data book is a catalogue of taxa facing risk of extinction. Therefore, plants on the verge of extinction are contained in this book. It is maintained by IUCN.

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