Around 25% of all sharks lay eggs. Most sharks do not lay eggs and instead give birth to live young that have developed inside the mother’s body. The eggs of oviparous (egg-laying) sharks are encased in leathery pouches known as “mermaid’s purses”, which protect the embryo as it ...
In contrast to oviparous sharks, viviparous sharks give birth to live young. These sharks retain the eggs inside their bodies, where the embryos develop until they are born. The young are typically larger and more developed than those of oviparous sharks, increasing their chances of survival. ...
Names of Sharks that lay Eggs: California Hornshark, Port Jackson shark, Catsharks; Zebra shark, Necklace Carpet shark, Swellshark, Names of Sharks that give birth to live Pups: Whale sharks, Blue shark, Bull shark, Whitetip Reef sharks, Mako shark, Salmon shark, Lemon shark,Hammerheads Sha...
About 70 percent of sharks are viviparous, meaning they give birth to live young; the remaining 30 percent of shark species — plus near-relatives like skates, rays and chimaeras (an order that includes the spooky "ghost shark") — are oviparous, meaning they lay eggs externally. ... Do...
Do whale sharks have scales? Are humpback whales nekton? How do whale sharks breathe? Do killer whales attack sharks? Are whale sharks aggressive? Are there whale sharks in the Mediterranean? How do whales adapt to their habitat? Do whale sharks lay eggs?
Do sharks lay eggs? 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. Around 40 to 50 different shark species live permanently in or regularly visit the waters surrounding Britain...
(1)Hard.细节理解题.根据Sharks are facing hard living conditions these days.可知目前的鲨鱼的生活条件艰难.故答案为:Hard.(2)Over 500.细节理解题.根据There are over 500 kinds of sharks living in the oceans.可知有500多种鲨鱼.故答案为:Over 500.
Do marsupials lay eggs? Are all elephants endangered species? Do monkeys have umbilical cords? How do whale sharks give birth? What are the two species of elephants? What do elephants do? Do monotremes have genitals? Where are elephants native to?
Today ,more and more sharks(鲨鱼)die because of humans' activities.Sharks are facing hard living conditions these days. As we know ,sharks are among the oldest animals on earth. There are over 500 kinds of sharks living in the oceans. Most of them are quite larg...
Not all sharks are large. Some only grow up to 7 inches long. However,most kinds of sharks grow to about 5-7 feet long,which is about the same height as an average adult. Not all sharks are dangerous to humans,either. There are over 350 kinds ofsharks...