Table of Contents
Viviparous Oviparous
Oviparous animals lay eggs, which are fertilized by the male and then hatch to release the young. Viviparous animals give birth to live young, which are nourished within the mother’s body.
There are two types of reproduction in animals: viviparous and oviparous. Viviparous animals give birth to live young, while oviparous animals lay eggs. Some animals can do both, depending on the environment and their stage in life.
The advantages of viviparity are that the young are born with all their limbs and their organs are functional. They are immediately ready to start feeding and fend for themselves. Viviparity is also thought to be an adaptation to a harsh environment, where the young need to be able to survive quickly. Oviparity is thought to be an adaptation to a less harsh environment, where the young can take their time developing in the safety of the egg.
There are some disadvantages to viviparity. It is more costly for the mother to produce live young than to produce eggs. The young are also more vulnerable to predators and environmental hazards. Oviparity is less costly for the mother and the young are less vulnerable to predators and environmental hazards.
In the end, it is up to the animal to decide which reproductive strategy is best for them.
Oviparous and Viviparous Animals
The two types of reproductive systems in animals are oviparous and viviparous. Oviparous animals lay eggs that are fertilized outside the body. Viviparous animals give birth to live young.
- The oviparous reproductive system found in animals such as fish, amphibians, and reptiles. The eggs are fertilized outside the body and then the female lays the eggs. The eggs hatch and the young animals emerge from the eggs.
- The viviparous reproductive system is found in animals such as mammals and some birds. The young animals are born alive and are fed milk by the mother.
Matrotrophy
In matrotrophy, the developing embryo derives all of its nutrients from the mother’s body. There are two types of matrotrophy: uterine and extrauterine. In uterine matrotrophy, the embryo attaches to the mother’s uterine wall, where it derives its nutrients. In extrauterine matrotrophy, the embryo attaches to a specialized organ outside the uterus, such as the placenta, where it derives its nutrients.
Metamorphosis in Oviparous and Viviparous Animals
There are two types of reproductive systems in animals: oviparous and viviparous. Oviparous animals lay eggs, while viviparous animals give birth to live young.
- In oviparous animals, the eggs fertilized outside of the body and then laid. The eggs may laid in a nest or buried in the ground. The eggs of some animals, such as fish and frogs, are fertilized as they are released from the body.
- In viviparous animals, the eggs fertilized inside the body. The embryos develop inside the mother’s body and are born live. The babies are born ready to survive on their own.
Metamorphosis of a Frog
A frog begins its life as an egg. The egg hatches into a larva, which is essentially a baby frog. The larva undergoes a series of molts, or skin changes, as it grows. It eventually becomes a froglet, and then a frog.
Metamorphosis in Butterfly
Butterflies undergo a process called metamorphosis. Metamorphosis is the process of a caterpillar turning into a butterfly. The caterpillar will go through a process of molting, in which it will shed its skin. The caterpillar will also eat a lot, so that it can grow larger. Once the caterpillar is big enough, it will spin a cocoon around itself and go into a state of hibernation. Inside the cocoon, the caterpillar will transform into a butterfly. When the butterfly is ready, it will emerge from the cocoon and start to fly.
Ovoviviparity
In ovoviviparity, fertilization and embryonic development take place within the female body, but the embryos hatch inside the mother’s oviduct and are born live. This is in contrast to viviparity, in which the embryos are born alive and develop within the uterus.
Ovoviviparous Animals
In ovoviviparous animals, eggs hatch and develop inside the mother’s body, and the embryos nourished by the mother’s tissues. The embryos receive oxygen and nutrients through the umbilical cord. Examples of ovoviviparous animals include sharks, rays, and skates.
Embryo Development
The embryo begins to develop after fertilization. The cells of the embryo divide and grow. The embryo forms into three layers. The first layer is the ectoderm. The ectoderm becomes the skin, hair, and nails. The second layer is the mesoderm. The mesoderm becomes the bones, muscles, and blood vessels. The third layer is the endoderm. The endoderm becomes the lungs, stomach, and intestines.
The embryo grows and becomes a fetus. The fetus develops organs and systems. It grows in the uterus. The fetus is born and becomes a baby.
Difference Between Oviparous, Viviparous, and Ovoviviparous Animals
There are three main types of reproductive strategies in animals: oviparous, viviparous, and ovoviviparous.
Oviparous animals lay eggs that fertilized externally. The eggs then hatch outside the mother’s body. Viviparous animals give birth to live young that nourished inside the mother’s body. Ovoviviparous animals give birth to live young that hatched inside the mother’s body and then nourished externally.
There are three types of reproduction in animals: oviparous, viviparous, and ovoviviparous. Oviparous animals lay eggs, viviparous animals give birth to live young, and ovoviviparous animals have eggs that hatch inside the mother’s body and the young are born alive.
Oviparous animals include most fish, amphibians, and reptiles. They lay eggs that have a hard shell and the embryo protected by the shell. The eggs hatch outside of the mother’s body. Viviparous animals include most mammals. They give birth to live young that are born with hair and are able to survive on their own. Ovoviviparous animals include some fish, amphibians, and reptiles. The eggs hatch inside the mother’s body and the young are born alive.
