How many plant and animal species have been described so far according to IUCN (2004)?

How many plant and animal species have been described so far according to IUCN (2004)?
  1. 20 to 50 million
  2. 7 million
  3. 1.5 million
  4. 10 million

Solution

According to the International Union for Conservation of Nature and Natural Resources (IUCN) (2004), the total number of plant and animal species described so far is slightly more than 1.5 million.

Asked in: NCERT

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