Choose the odd one out from this group of farm crops: Gram, Lentil, Barley, Pea.

Gram, lentil and pea are pulses: each grows inside a pod and is valued for the protein packed in its seed. Barley is a cereal, a grass whose grain is ground into flour or malted. All four are sown in the cooler months and stored in the same kind of sack, which is why barley reads as one of the group, but the tie is being a pulse.