Tag: oviparous and viviparous

• Animals that lay eggs to produce their offspring are known as oviparous animals
• Birds, reptiles and amphibians are examples of oviparous animals.
• Mammals (including human beings) are an example of viviparous animals as they produce offspring by the development of embryo inside their body, eventually leading to live birth.

Animals giving birth to young ones are called viviparous animals. The egg of these animals typically contains less of yolk insufficient to support the development of the zygote into an embryo. Hence, development proceeds inside the body of the female animal and the fully developed embryo is delivered. Oviparous animals lay an egg. Their egg typically has more amount of yolk and can support the development of the zygote into an embryo. Ovovivipary is an in-between scenario in which eggs are retained till embryo is developed and is then delivered.

Tortoise lays eggs so it is Oviparous and not Viviparous.

There are two types of reproduction: Sexual and Asexual.

Ovipary is the phenomenon in which an adult organisms reproduces and lays eggs which later hatch and give rise to young ones.

Animals which give birth to young ones are known as mammals which are vertebrates.

Cow is a placental mammal. Once it gives birth to a calf it grows outside the cow's body.

In viviparous animals, females give birth to young ones. The development of zygote takes place inside the female's body. Females deliver young ones and the chances of survival of offsprings are more. Mammals (except egg-laying mammals), like whale, shark, mouse, humans are examples of viviparous animals.

So, the correct answer is 'Sharks'.

Vivipary is the condition, where the embryo grows first to break through the seed coat and then out of the fruit wall while still attached to the parent plant. This condition is found in Bruguiera, Ceriops, Kandelia and Rhizophora species.