Different species are classified into different threat categories in the_____

A. Blue Data Book

B. Yellow Data Book

C. Black Data Book

D. Red Data Book

The correct answer is: D. Red Data Book

The Red Data Book is a record maintained at international and national levels to keep information about species of plants and animals that are at risk of extinction.

Complete step-by-step solution –

• The Red Data Book is published by the International Union for Conservation of Nature (IUCN).
• It provides detailed information on the conservation status of species of animals, birds, fishes, plants, and fungi.
• Different species are classified into categories such as:
  1. Extinct (EX): Species that no longer exist.
  2. Critically Endangered (CR): Species facing an extremely high risk of extinction in the wild.
  3. Endangered (EN): Species that are likely to become extinct soon if no protective measures are taken.
  4. Vulnerable (VU): Species that are at risk of becoming endangered.
  5. Near Threatened (NT): Species that may soon move into the threatened category.
  6. Least Concern (LC): Species that are widespread and abundant.
• The purpose of this book is to make governments and people aware of the need to protect these species. It acts like a guide for planning conservation programs.

Additional Information:

• Blue Data Book: Sometimes refers to publications listing rare plant species, but not used widely.
• Black Data Book: Refers to records of species or information that are considered very rare or controversial.
• Yellow Data Book: Not used in the context of threatened species.

Note: The Red Data Book is an important tool to study biodiversity conservation and to monitor the health of ecosystems across the world.