Aquatic and Marine Biology

This is the correct answer. House fly, butterfly, tsetse fly: All are Insects.

Since all of the above mentioned are the examples of zooplankton, so this is the correct option.

The breeding, rearing and transplantation of fish by artificial means is called pisciculture.

Exocoetus is also known as flying fish.

Pomfret is a marine water fish.

False fishes (which do not belong to pisces) Cray fish: Astacus - a crustacean from Arthropoda Star fish: Asterias - an asteroid from Echinodermata Jelly fish: Aurelia - a scyphozoan from Coelentrata

Foramen of panizza is present in crocodiles. It is the hole in the heart between the two ventricles, which allows blood to move from one side of the heart to another.

Pulmocutaneous circulation is a unique characteristic of amphibians, like frogs. 

It is the correct option. Shark is a fish and possesses gills for respiration. Tadpoles have gills for respiration in water which after metamorphosis, develop into lungs.

Tetrodotoxin is found in the skin of salamanders. It is a neurotoxin.

Necturus maculosus is known as the common mudpuppy.

African dwarf frog is a tongueless frog. It is also toothless and completely aquatic. It uses its webbed feet to shove food in its mouth and down its throat. It has a hyobranchial pump to draw or suck food into its mouth.

Axolotl or neonatal salamander is known as the walking fish. Axolotls are unusual among amphibians as they reach adulthood without undergoing metamorphosis.

Silkworms are reared by keeping the caterpillar in clean bamboo trays along with freshly chopped mulberry leaves.

Correct answer. All of these belong to order Cetacea. Cetacea and Sirenia are two orders of class mammalia.They are mosinus delphistly marine, large fish like mammals adapted to life in water. Cetaceans are predominantly carnivorous animals, e.g., Balaenoptera musculus(blue whale), Delphinus delphis(dolphin), Phocaena(porpoise). Sirenians on the other hand are herbivores, e.g., Manatee(Trichechus) and Dugong (Dugong dugon).