関連ワード:
what is the gastrovascular cavity in cnidarians what is the function of gastrovascular cavity in cnidarians what is the disadvantage of the gastrovascular cavity in cnidarians what is the purpose of the gastrovascular cavity in cnidarians what is the primary function of the gastrovascular cavity in cnidarians what are the functions of the gastrovascular cavity in cnidarians like hydra do cnidarians have a gastrovascular cavity do sponges have a gastrovascular cavity what is the gastrovascular cavity in hydra
