What animal group has internal fertilisation but external development?

1. What animal does internal fertilization and external development?
2. Are reptiles external or internal fertilization?
3. Is Dog internal or external fertilization?
4. Which animal would have external fertilization?
5. Do crocodiles use internal or external fertilization?
6. Is fish internal or external fertilization?
7. Do frogs have internal or external fertilization?
8. Do amphibians have internal or external fertilization?
9. Do snakes have internal or external fertilization?
10. Do chickens have internal or external fertilization?
11. Do Sharks practice internal fertilization?
12. Why is fertilization in bryophytes and Pteridophytes considered as internal fertilization?
13. Are bird eggs fertilized externally?
14. Do bony fish have internal fertilization?

What animal does internal fertilization and external development?

Internal Fertilization

In oviparity, fertilized eggs are laid outside the female's body and develop there, receiving nourishment from the yolk that is a part of the egg. This occurs in most bony fish, many reptiles, some cartilaginous fish, most amphibians, two mammals, and all birds.

Are reptiles external or internal fertilization?

Most reptiles reproduce sexually and have internal fertilization. Males have one or two penises that pass sperm from their cloaca to the cloaca of a female. Fertilization occurs within the cloaca, and fertilized eggs leave the female's body through the opening in the cloaca.

Is Dog internal or external fertilization?

When we think about organisms mating, often we think of animals around us—humans, dogs, dragonflies, cats, lizards, or maybe birds. When these animals mate with each other, the egg and sperm meet inside the body, not outside in the air or water.

Which animal would have external fertilization?

Among vertebrates, external fertilization is most common in amphibians and fish. Invertebrates utilizing external fertilization are mostly benthic, sessile, or both, including animals such as coral, sea anemones, and tube-dwelling polychaetes.

Do crocodiles use internal or external fertilization?

Like all reptiles, saltwater crocodiles reproduce via internal fertilization, and females carefully look over their nests after laying a clutch of approximately 50 eggs.

Is fish internal or external fertilization?

Most fish species spawn eggs that are fertilized externally, typically with the male inseminating the eggs after the female lays them.

Do frogs have internal or external fertilization?

In most species of frogs, fertilization is external. The male frog grabs the female's back and fertilizes the eggs as the female frog releases them (Figure 2.2B). Rana pipiens usually lays around 2500 eggs, while the bullfrog, Rana catesbiana, can lay as many as 20,000.

Do amphibians have internal or external fertilization?

Amphibians reproduce sexually with either external or internal fertilization. They attract mates in a variety of ways. For example, the loud croaking of frogs is their mating call.

Do snakes have internal or external fertilization?

Snakes reproduce by internal fertilization and either give birth to live young or lay eggs, depending on the species. Female live-bearing snakes will find a sheltered location to give birth before abandoning the young to fend for themselves.

Do chickens have internal or external fertilization?

Chickens — like other birds — lay fertilized eggs via sexual reproduction.

Do Sharks practice internal fertilization?

Shark and batoid eggs are fertilized internally, as opposed to external fertilization in many bony fishes. Internal fertilization is a key adaptation for energy-intensive reproduction. When born or hatched, young sharks are fully formed and physically able to fend for themselves.

Why is fertilization in bryophytes and Pteridophytes considered as internal fertilization?

Fertilization in bryophytes or pteridophytes is considered as a internal fertilization because fusion of male and female gametes (syngamy) occurs inside the archegonium (female reproductive organ).

Are bird eggs fertilized externally?

Birds reproduce by internal fertilization, during which the egg is fertilized inside the female. Like reptiles, birds have cloaca, or a single exit and entrance for sperm, eggs, and waste. The male brings his sperm to the female cloaca. The sperm fertilizes the egg.

Do bony fish have internal fertilization?

The trigger to spawn varies with each specific species. The majority of bony fish reproduce via external fertilization of their eggs. During spawning season for the fish, the females and the males release hundreds and sometimes thousands of eggs and sperm into the water. The eggs are fertilized in the water.