Step of fisheries

  QUIZ 117 - 26/4 (solution) Basic units of universe consisting of stars are called:  Galaxies   Auroras   Globe  Ionosphere  source - space The basic units of the universe consisting of stars are called galaxies. Galaxies are large systems of stars, gas, dust, and other matter bound together by gravity. They come in a variety of shapes and sizes, ranging from small dwarf galaxies with just a few million stars to massive elliptical galaxies with trillions of stars. The study of galaxies is an important field of astronomy, as they offer clues to the evolution of the universe and the formation of stars and planets. Observations of galaxies have helped astronomers to understand the structure and composition of the universe, and have led to the discovery of many important astrophysical phenomena, such as black holes and dark matter. There are many different types of galaxies, including spiral galaxies, elliptical galaxies, and irregular galaxies. Our ...

 About "long-spine porcupinefish" 📍Kingdom:- Animalia 📍Phylum:- Chordata 📍Class:- Actinopterygii 📍Order:- Tetraodontiformes 📍Family:- Diodontidae 📍Genus:- Diodon 📍Species:- D. holocanthus 📍Binomial name:- Diodon holocanthus 👉The long-spine porcupinefish (Diodon holocanthus), also known as the freckled porcupinefish among other vernacular names, is a species of marine fish in the family Diodontidae. 👉The species' diet includes sea urchins and hard-shelled mollusks. 👉The Longspined porcupinefish has a circumtropical in distribution, being found in the tropical zones of major seas and oceans. 👉The long-spine porcupinefish is pale in colour with large black blotches and smaller black spots; these spots becoming fewer in number with age.  👉It has many long, two-rooted depressible spines particularly on its head. 👉The teeth of the two jaws are fused into a parrot-like "beak". 👉Adults may reach 50 cm (20 in) in length. 👉The only other fish with which it...