Description : One of the special characters of coelenterata only is the occurrence of (a) polymorphism (b) flame cells (c) hermaphroditism (d) nematocysts.
Last Answer : (d) nematocysts.
Description : From the following statements select the wrong one. (a) Prawn has two pairs of antennae. (b) Nematocysts are characteristics of the Phylum Cnidaria. (c) Millepedes have two pairs of appendages in each segment of the body. (d) Animals belonging to Phylum Porifera are marine and fresh water
Last Answer : (a) Prawn has two pairs of antennae.
Description : Cnidarian toxins are secreted by the________ cell. a. Pseudocysts b. Nematocysts c. Hydrocysts d. Gonadocytes
Last Answer : b. Nematocysts
Description : Nematocysts are present in (1) Starfish (2) Ascaris (3) Centipede (4) Sea anemone
Last Answer : Sea anemone