Also found in: Dictionary, Thesaurus, Medical. hydra, in zoology hydra (hīˈdrə), common name for freshwater organisms in the phylum Cnidaria, which includes jellyfish, sea anemones, and corals. Hydras are widely distributed in lakes, ponds, and sluggish streams. They are small, ...
- The Lernaean Hydra or Hydra of Lerna (Ancient Gr***: Λερναῖα ὕδρα, romanized: Lernaîa Húdrā), more often known simply as the Hydra, is a serpentine lake...- Hydra (/ˈhaɪdrə/ HY-drə) is a genus of small freshwater hydrozoans of the phylum Cnidaria...
Hydras are simple aquatic organisms, members of the phylum Cnidaria. Green hydra (Hydra viridissima Pallas) is endosymbiotic and brown hydra {Hydra oligact... Kovačević,Goran; Želježić,Davor; Horvatin,... - 《Symbiosis》 被引量: 33发表: 2007年 加载更多来源...
Hydras are microscopic organisms with a tubelike central body. One end of this tube has an opening, which is the hydra's mouth, and the only opening in its body. The mouth is surrounded by tentacles that are armed with the hydra's hunting and defensive mechanism, the nematocysts. All cn...
To solve the question regarding what Hydra possesses, we can break down the information step by step.1. Understanding Hydra's Reproductive System: - Hydra is known to be a hermaphrodite, meaning it has both male and female
Why are animals like a snail, a clam, and a squid, which all look very different, considered to be in the same phylum? How is nematode sperm different from all other animal sperm? Hydras, earthworms, grasshoppers, and humans are classified in the same ___. (a) genus (b) species ...
Phylum Cnidaria Fatma El-Bawab, in Invertebrate Embryology and Reproduction, 2020 Hydra vulgaris The simplest members of the whole class (with the exception of one or two imperfectly known forms, which will be referred to below) are the freshwater polyps of the genus Hydra (found all over the...
Which phylum is most closely related to the arthropods? a. Mollusks. b. Annelids. c. Echinoderms. d. Roundworms. Which of the following animals displays radial symmetry? a.) A worm b.) A sea anemone c.) A fish d.) A lobster Which ...
The evolution of opsin genes is of great interest because it can provide insight into the evolution of light detection and vision. An interesting group in which to study opsins is Cnidaria because it is a basal phylum sister to Bilateria with much visual diversity within the phylum.Hydra vulgar...
Piezo MS channels are widely represented in Metazoa, acting in several physiological systems.Hydra sp. is a freshwater member of the phylum Cnidaria which is assumed as the sister group of Bilateria. Despite the existence of Piezo channels in Hydra is known, their physiological roles remain ...