A conveyance unit includes a cassette removably attached to an apparatus body and a conveyance interlocked part provided in the apparatus body. The cassette includes a sheet storage part for storing a sheet, a lift plate liftably provided between a lowered position and a raised position and a biasing member for biasing the sheet to contact with a pickup roller. The conveyance interlocked part includes a lever for engaging with the lift plate when the cassette is attached to the apparatus body and being liftable together with the lift plate, a pressing mechanism for pressing the lever downward, and a support member provided between the apparatus body and the lever so as to suppress a drop of the lever disengaged from the lift plate when the cassette is detached from the apparatus body.