Digestion in Ctenophora

Ctenophores, commonly known as comb jellies, belong to the phylum Ctenophora. They are marine animals that are characterized by their cilia, which they use for locomotion and feeding. Ctenophores have a simple digestive system that includes a mouth, pharynx, and gastrovascular cavity.

Complete or Incomplete Digestion?

Ctenophores have a complete digestive system, which means that they have a separate mouth and anus. This allows for the efficient breakdown and absorption of nutrients from their food.

Process of Digestion

The digestion process in ctenophores begins when they capture small planktonic organisms with their tentacles. The tentacles are covered with colloblasts, which are specialized cells that secrete a sticky substance to capture prey. Once the prey is captured, the ctenophore brings it to its mouth, which is located at the base of the tentacles.

From the mouth, the prey enters the pharynx, which is lined with cilia that help move food particles towards the gastrovascular cavity. The gastrovascular cavity is a sac-like structure that is lined with cells that secrete digestive enzymes. The enzymes break down the food into smaller particles that can be absorbed by the cells lining the cavity.

Once the nutrients are absorbed, the waste is eliminated through the anus, which is located on the opposite end of the body from the mouth.

Conclusion

In conclusion, ctenophores have a complete digestive system, which allows for the efficient breakdown and absorption of nutrients from their food. The process of digestion in ctenophores begins with the capture of prey with their tentacles and ends with the elimination of waste through the anus.

All gonna wrong.... Digestion is COMPLETE in ctenophora.... But digestive system is INCOMPLETE......that is digestive canal is INCOMPLETE(having only one opening)... Question is also little wrong