Question

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:

• A. About 20 million
• B. More than 1.5 million
• C. Less than 1 million
• D. Only 0.5 million

Answer 1

The correct option is B More than 1.5 million

Total number of known and described species is more than 1.5 million according to IUCN (2004).