The part of the digestive tract of birds which secrets gastric juice is the? by Sunday | Jun 12 | Agricultural Science WAEC | 0 comments A. oesophagus B. proventriculus C. gizzard D. crop Correct Answer: Option B – proventriculus Users Also Read These:In the diagram of the digestive tract of a farm…The part of the mammalian digestive system where…A gas was evolved when a sample of gastric juice…The diagram below illustrates the digestive tract of…In the diagram below which shows the digestive tract…