Identify true statements: (A) Cnidarians have blind-sac body plan. (B) Digestion in Ctenophora is both intra as well as extracellular (C) Agnathans are endoparasites on fishes. (D) Ichthyophis belongs to Tetrapoda group

Step-by-step solution

Cnidarians have blind-sac body plan (in this plan, the body is sac-like with a digestive cavity which opens to outside by only one aperture, which functions as mouth and anus). In Ctenophora, digestion is both extracellular and intracellular and wastes are voided (removed) via both the mouth and the anus. Ichthyophis is a genus of caecilians, belongs to Tetrapoda group (limbless amphibians, sometimes called the Asian caecilians) found in Southeast Asia, the southern Philippines, and the western Indo-Australian Arch