1. The second dose of pituitary extract injected into the fish’s body for induced breeding iscalled a) Terminal dose b) Resolving dose c) Evening dose d) Stimulating dose 2. Which one of the following is correct for semi-intensive fish farming? a) Aeration needed, pellet feed, production: 3000-6000 kg/ha b) Aeration needed, high investment, Pound size: 1 hectare c) Natural & formulated feed, production: 3000 kg/ha, aeration not needed d) Natural feed, low investment, production: 6000 kg/ha. 3. Composite fish culture is based on the scientific principle of a) attainable size of fish species b) availability of natural food c) different types of fish species d) different trophic niches of fishes 4. Electric organs of neurogenic lineage are found in a) Electrophorusb) Astroscopusc) Sternarchus d) Malapterurus5. The principal components of compound light organ are: a) Photocytes, pigmented mantle, lens and reflector b) Gland cells, luciferin, muscles, pigmented mantle c) Photocytes, iris diaphragm, melanophores, reflector d) Gland cells, pigmented mantle, corium, luciferin