Getting to Know How Animals Reproduce: Generative and Vegetative

Types/How Animals Reproduce – Basically, reproduction is one of the basic characteristics of animals as living things. This reproduction must be done by animals to avoid extinction.

In general, animals reproduce sexually or sexually, however, there are also types/methods of animals that reproduce vegetatively or without sexual or asexual activity.

List of contents

Types/How Animals Reproduce Generatively

Sexual reproduction, also known as sexual reproduction, occurs when male gametes (sperm) meet female gametes (eggs). Sexual reproduction can be divided into three types namely oviparous, viviparous, and ovoviviparous.

Grameds can also read the book Various Ways of Animals Breeding to find out in full the types/how animals reproduce. You can get this book at Gramedia.com

Types/How Animals Reproduce

1. Ovipar

Oviparity is the type / way animals reproduce by laying eggs. This reproduction is usually carried out by birds and reptiles. After fertilization, the resulting embryo grows and develops in the egg shell. The embryo receives nutrition and food reserves from the eggs that are released from the mother’s body.

[algolia_carousel]

Therefore, the oviparous embryo develops in the egg outside the mother’s body. Some characteristics of oviparous animals are the absence of mammary glands and ears. An example of an animal laying eggs is as follows.

a. Chicken

Types/How Animals Reproduce

Unsplash.com

Chickens are animals that reproduce by laying eggs. After the chicken lays the eggs, the eggs go through an incubation process that lasts about 20-21 days to keep the eggs warm.

From the outside, you can see that the chicken has no earlobe. Similarly, not having nipples indicates that the hen does not have mammary glands and cannot breastfeed.

b. Swan

Goose reproduce in an oviparous way, just like chickens, reproduce by releasing eggs. Goose eggs are larger than other birds and the incubation process lasts up to 20 days.

c. Dove

In addition to chickens and geese which are often kept as pets, pigeons are one example of oviparous animals that are also commonly kept by humans. Much smaller than the two eggs above, pigeon eggs only need to be incubated for 17-19 days.

d. Lizard

Yes, small lizards that are often found on roofs and walls of houses are also included as examples of oviparous animals. Lizards usually hide their eggs in hidden places such as the back of a cupboard or bark to prevent them from being attacked by predators.

e. Siamese fighting fish

Betta fish are in great demand, because of their beautiful colors, highly sought after for collection and use as house pets and aquariums. This betta fish is also classified as laying or laying eggs.

The shape of this betta egg resembles a bubble on the side of a pool of water and aquarium. Solid fish eggs only take 3 days to hatch.

f. Frog

Frogs are amphibians that reproduce by laying eggs. However, unlike normal egg-laying animals, male frogs fertilize the eggs released by the female into the water. Eggs fertilized by male frogs grow and hatch into tadpoles or tadpoles in the water. The tadpole undergoes metamorphosis, exposing the lungs and legs, and then grows into an adult frog.

g. Butterfly

The caterpillars that we usually find in trees are actually in the form of butterfly larvae. This butterfly is a type of arthropod or insect that reproduces by laying eggs or is oviparous. Adult butterflies lay their eggs on the leaf surface, which grow into the larvae and caterpillars we know. The caterpillar then sleeps in a cocoon and turns into a small butterfly and grows into an adult butterfly.

Video Player is loading.

h. Platypus

Most mammals reproduce by giving birth, but there are also some mammals that reproduce by oviparity or laying eggs. An example is the platypus. This animal is classified as monotreme. Monotremes reproduce by laying eggs, but still have mammary glands and raise offspring through the folds of the mother’s mammary glands.

i. Crocodile

Another example of an oviparous or egg-laying animal is a crocodile. Crocodiles are called oviparous animals because they are amphibians that reproduce by laying eggs. Crocodiles dig holes in mounds of earth and lay eggs. Usually, the female alligator protects the nest and its youth.

However, depending on the type of crocodile, crocodiles can lay 7-95 eggs at the same time during one spawning period. Crocodile eggs take about 80 days to hatch.

j. Ant

These animals are usually found in the garden to the room in the house. Ants are also included in the example of animals that lay eggs or oviparous, the Queen of ants can lay about 100,000 to 300,000 eggs in a few days.

This egg reproduction is carried out by the queen with the male being obliged to mate with the queen. The hatched eggs then grow into new worker, soldier, male, or queen ants.

Characteristics of Oviparous or Egg-laying Animals

As already mentioned, different reproductive patterns also produce different characteristics of the animal itself. Like an egg-laying animal, it has different characteristics from other animals. Here are some things that can distinguish egg-laying animals from other animal species.

a. No earlobe

People who have difficulty distinguishing animals with an oviparous reproductive process can see it in their earlobes. The first characteristic of oviparous or egg-laying animals is the absence of earlobe. Therefore, it is very easy to distinguish oviparous animals when looking at them in person.

b. Does not have mammary glands and does not suck milk

we can recognize the species that reproduce during the lactation process. The characteristics of oviparous animals are not breastfeeding their children because they do not have mammary glands.

c. The mother incubates the eggs until they hatch

When you see the mother laying eggs in the nest or cage, you can see the mother is sitting down to incubate the eggs. This is done to keep the eggs warm and alive.

d. Eggs are outside the mother’s body

As previously explained, the characteristics of oviparous animals are eggs are released outside the mother’s stomach, develop and hatch.

About admin

Check Also

12 List of Most Dangerous Animals in the World

Almost all animals that live in this world have natural powers that can protect themselves …

Leave a Reply

Your email address will not be published.