Pros And Cons Of External Versus External Fertilization

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1. Compare and contrast the advantages and disadvantages to the female of external versus internal fertilization.
In comparing, external fertilization occurs when the release of both sperms and eggs into an external environment, the sperm will then fertilize the egg outside of the organism for example in spawning. Internal fertilization, on the other hand, occurs when the egg is within the female, and a male mounts the female and releases sperms into her. The advantages of internal fertilization are that it protects the fertilized egg or the embryo from predators or the harsh environment. The disadvantages of internal reproduction include harder to bring both the male and the female into intimate contact.
The advantages of external fertilization
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The catfish, on the other hand, has taste buds all over its body to help it sense food and scan large areas of food.

3. Explain how a freshwater fish maintains osmotic balance.
In a freshwater fish, the inside of the fish’s body has a higher concentration of salt than the external environment. To prevent loss of water, fish have very efficient kidneys that excrete water quickly. The kidneys also reabsorb salt from their urine before it is ejaculated to minimize losses and actively take the salt from their environment by the use of special cells in the gills.
4. Describe how a phystoclistus swim bladder works. Explain how it is different from physostome.
The swim bladder helps the fish to gain buoyancy. The bladder helps them to swim and also to maintain a certain depth in water without much effort. It is different from physostome because the physostomeis fish that has a duct between their air bladder and the alimentary canal broadly.
5. Discuss the advantages and disadvantages of direct development in

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