internal and external fertilization both

External fertilization is a mode of reproduction in which a male organism's sperm fertilizes a female organism's egg outside of the female's body. It is contrasted with internal fertilization, in which sperm are introduced via insemination and then combine with an egg inside the body of a female organism.

1. What are the similarities between internal and external fertilization?
2. What animals use internal fertilization but external development?
3. What is the difference between external and internal fertilization quizlet?
4. Is Dog internal or external fertilization?
5. What is internal fertilization give example?
6. What is internal fertilization give two examples?
7. What is internal and external development?
8. What are the advantages and disadvantages of internal and external fertilization?
9. Do humans have internal or external fertilization?
10. Where does external fertilization occur?
11. What is the main problem associated with external fertilization?
12. What is not an advantage of internal fertilization?

What are the similarities between internal and external fertilization?

The similarity between internal fertilization and external fertilization is that the sperm fuses with the egg cell to form a zygote. The dissimilarity is that in internal fertilization, the fusion occurs inside the body of the organism while in external fertilization, the fusion occurs outside the body of the organism.

What animals use internal fertilization but external development?

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.

What is the difference between external and internal fertilization quizlet?

External fertilization is when eggs are released by a female into the environment and later fertilized with a male's sperm. Internal fertilization is when sperm are deposited in or near a female's reproductive tract and fertilization takes place within the reproductive tract.

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.

What is internal fertilization give example?

Internal fertilization is the process of fertilization that occurs inside the body of an individual. It occurs mostly in land animals. ... Different animals have different methods of transferring the sperms. For eg., in mammals, reptiles, and some fish, this is done by copulation.

What is internal fertilization give two examples?

Examples: Fish, Amphibians, and most of the Algae, etc. Examples: Reptiles, Birds, Mammals, Bryophytes, and Tracheophytes.

What is internal and external development?

The difference between internal and external development is the fact that internal development refers specifically to sexual organs, while external development refers to the many physical changes that occur in an organism before it reaches sexual maturity.

What are the advantages and disadvantages of internal and external fertilization?

Increase chance gametes meet and greater change of successful fertilisation. More protection against outside environments and predators, and therefore a higher chance of surviving until birth. More selective of their mates. Less chance of desiccation of gametes.

Do humans have internal or external fertilization?

Sexual reproduction starts with the combination of a sperm and an egg in a process called fertilization. This can occur either inside (internal fertilization) or outside ( external fertilization) the body of the female. Humans provide an example of the former whereas seahorse reproduction is an example of the latter.

Where does external fertilization occur?

External fertilization in animals usually occurs in water or in damp areas in a process called spawning. Moisture in the environment keeps the gametes from drying out. Moisture is also important so the eggs and sperm can move around freely, which lets them meet and fuse.

What is the main problem associated with external fertilization?

A water body is required to initiate external fertilization. The sperms would die on land. It is a reproductive disadvantage for most of the animals because most of the gametes die without being fertilized.

What is not an advantage of internal fertilization?

Disadvantages of internal fertilization are that there are lesser number of offspring produced at a given time because it is sometimes difficult for the male and female to come into intimate contact. Additionally, the risk of sexually transmitted diseases also increases.