SCIENCE
ZOOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Cod
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Shark
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Mackerel
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Flying fish
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Detailed explanation-1: -Fish Scoliodon is commonly known as Shark. Sharks are aquatic mammals, that reproduce through vivipary.
Detailed explanation-2: -Many sharks are viviparous, meaning they give birth to live young. Like all sharks, species such as blue, bull, and hammerhead sharks rely at first on a yolk sac for nutrition. But they also develop a placental connection similar to a mammal’s umbilical cord.
Detailed explanation-3: -There are over 500 species of shark living in waters around the world and the majority give birth to live young. The remainder are oviparous, meaning they lay eggs.
Detailed explanation-4: -Option B is correct. Throughout the entire gestation cycle, viviparous sharks bear the embryos and give birth to live shark pups, close to how humans give birth.
Detailed explanation-5: -Among the 25.000 species of teleost fishes, approximately 500 fish species are viviparous.