How much of all gymnosperm species in the world face the threat of extinction?

31%

More than 15,500 species world-wide are facing the threat of extinction.

Presently, 12 per cent of all bird species, 23 per cent of all mammal species, 32 per cent of all amphibian species and 31per cent of all gymnosperm species in the world face the threat of extinction.

(Extinction occurs when the last members of a species die because they cannot acquire the food, water, shelter, and/or space necessary to survive.)