Elastic cartilage: It is similar in structure to hyaline cartilage. It is also quite strong but has elasticity due to a network of elastic fibres in addition to collagen fibres. It is found in epiglottis, pinna etc. Fibrous cartilage: It is very tough and less flexible due to large number of thick collagen fibres present in knitted form. It is found in invertebral discs. Correct Answer Elastic cartilage: It is similar in structure to hyaline cartilage. It is also quite strong but has elasticity due to a network of elastic fibres in addition to collagen fibres. It is found in epiglottis, pinna etc. Fibrous cartilage: It is very tough and less flexible due to large number of thick collagen fibres present in knitted form. It is found in invertebral discs.