4
Question
Animals devoid of mouth and anus among the following is:
Animals devoid of mouth and anus among the following is:
Open in App
Solution
The correct option is A Porifera
- Members of Porifera do not have a digestive system. Hence they don't have a mouth and anus. The functions of the digestive system are performed by the canal system.
- Coelenterates have a mouth and anus as they have a gastrovascular cavity.
- Platyhelminthes have an incomplete digestive tract but mouth and anus are present.
- Nematodes are pseudocoelomates and show the presence of a complete digestive system with a distinct mouth and anus.
So, the correct answer is option A.
- Members of Porifera do not have a digestive system. Hence they don't have a mouth and anus. The functions of the digestive system are performed by the canal system.
- Coelenterates have a mouth and anus as they have a gastrovascular cavity.
- Platyhelminthes have an incomplete digestive tract but mouth and anus are present.
- Nematodes are pseudocoelomates and show the presence of a complete digestive system with a distinct mouth and anus.
So, the correct answer is option A.
Suggest Corrections
0
Similar questions
View More
Join BYJU'S Learning Program
Explore more
Join BYJU'S Learning Program
