Which of the following is not a natural fiber?

Cotton fiber is obtained from cotton plants. Jute fibre is obtained from stem of jute plant. And flax fiber is also obtained from flax plant. So cotton, jute and flax are natural fibres. But Nylon fibre is obtained from chemicals. So nylon is a synthetic fibre.

**Imporant Information**- The fibres which are not obtained from plants and animals are called synthetic fibres.