Question

which nitrogen containing substances is found in animal fibre that is lacking in plant fibre​

Answer 1

Explanation:

urea is a substance is found in animal fibre that is lacking in plant fibre

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Answer 2

Answer:

The nitrogen-containing substance found in animal fibre and lacking in plant fibre is protein.

Explanation:

• 'Animal fibers' are mainly constituted by fibrous protein molecules. Plant fibres are composed mainly of carbohydrates in the form of cellulose.
• Animal fibres are present in various parts like skin, hair, muscle, etc.
• Proteins are composed of amino acids which are composed of nitrogen, "carbon, hydrogen, and oxygen".
• Animal fibres are rich in nitrogenous proteins some of them are elastin, resilin, etc.
• Nitrogenous substances in animal fibres give the animal fibres the strength, elasticity, texture etc.