Q: 69 (CDS-I/2002)

Consider the following statements regarding different types of animals:
1. Cnidarians are acoelomate
2. All sponges (Porifera) are marineare marine
3. Flatworms (Platyhelminthes) can produce asexually
4. In arthropods, fertilisation is always internal.
Which of these statements is/are correct?
question_subject: 
Science
question_year: 
2002
question_exam: 
CDS-I
stats: 
0,512,544,136,320,512,88