AP BIOLOGY

Detailed explanation-1: -Food is stored in the crop which is the structure present just before the gizzard in the digestive system of insects. Also, the structure of chitinous plates varies in the gizzards of different insects.

Detailed explanation-2: -Crop: The crop is an out-pocket-ing of the esophagus and is located just outside the body cavity in the neck region (see Figure 3). Any swallowed feed and water is stored in the crop until it is time to pass it on to the rest of the digestive tract.

Detailed explanation-3: -Crop are distensible sacs which help in storage of food. Gizzard is made up of chitinous teeth and circular muscles and it helps in grinding the food. Birds have crops for storing food and gizzard as they lack teeth.

Detailed explanation-4: -…the stomach forms a thin-walled crop, which is the bird’s principal organ for the temporary storage of food. Some birds use the crop to carry food to their young.

Detailed explanation-5: -The crop stores food temporarily and starts the digestion process before it enters the stomach. It is a thin-walled pouch at the base of the esophagus where birds can store food before it is sent the rest of the way to the stomach.