Body cavity: Cnidarians have a central cavity called coelenteron or gastrovascular cavity, which helps in digestion and circulation. They have blind-sac body plan i.e., single pore opening to the exterior in the digestive system.
(a) The human testes are located outside the abdominal cavity. A pair of testes i: situated outside the abdominal cavity in a sac of skin called the scrotum. Scrotum keeps...
Reproduction:
Cnidarians reproduce asexually and sexually. Asexual reproduction takes place by budding and regeneration. Sexual reproduction takes place gamete formation. They exhibit metagenesis i.e. alternation of polypoid generation with medusoid generation....
