<prompt> Which amino acid is deficient in pulses:LysineThreonineMethionineCysteine  <response>: Ans. c MethionineRef K. Park 23rded. i628 Pulses protein are poor in methionine and to a lesser extent in cysteine. Since option C and D both are correct, we have to choose single best answer and that will be Methionine. Literatures clearly states that cysteine is deficient only up to a lesser extent. 