Aquatic reptiles area)Ammonotelicb)Uricotelicc)Ureotelicd)ammonotelic in water and uricotelic on landCorrect answer is option 'C'. Can you explain this answer?

Question

Answer

Yes its option is 'C' refer NCERT page no. 292 last second lines

Answer

The animals which excrete urea are called ureotelic animals. These include amphibians, mammals, many other categories of animals as aquatic or semiaquatic reptiles like turtles and alligators. So, option C is correct.

Answer

An ammonotelic organism excretes soluble ammonia as a result of deamination. Ammonia is highly toxic to tissues and extremely soluble in water. Ammonotelic animals include protozoans, crustaceans, platyhelminths, cnidarians, poriferans, echinoderms, and other aquatic invertebrates, among others. Ammonotelism is one of the three major forms of excretion of nitrogenous waste in organisms, the others being ureotelism and uricotelism.

Answer

Aquatic reptiles are Ureotelic.
Explanation:
Aquatic reptiles, such as turtles, crocodiles, and some snakes, have evolved certain physiological adaptations to live in water. One of these adaptations is their excretory system, which helps them efficiently eliminate waste products.
The excretory system of aquatic reptiles is ureotelic, meaning they excrete waste primarily in the form of urea. Urea is a less toxic and more water-soluble compound compared to ammonia, which is the primary waste product excreted by ammonotelic animals.
Reasons why aquatic reptiles are ureotelic:
1. Efficient water conservation: Aquatic reptiles live in water environments, where conserving water is crucial. Ureotelism allows them to excrete waste in a concentrated form, reducing water loss through urine.
2. Adaptation to aquatic life: Ureotelism is a characteristic feature of reptiles, and aquatic reptiles have retained this trait. Ureotelic excretion helps maintain osmotic balance in their bodies, allowing them to live in freshwater or marine environments.
3. Nitrogenous waste elimination: Ureotelism enables aquatic reptiles to convert ammonia, a toxic waste product, into urea, which is less harmful. This adaptation helps them eliminate waste efficiently without affecting their overall health.
In summary, aquatic reptiles are ureotelic, which allows them to efficiently eliminate waste products while adapting to their aquatic environment.

Answer

Aquatic reptiles are reptiles that primarily live in water or have adaptations for an aquatic lifestyle. These reptiles have specific mechanisms for excreting waste products, such as nitrogenous waste. There are three main types of nitrogenous waste excretion in animals: ammonotelism, uricotelism, and ureotelism.

Ammonotelism:
Ammonotelism is the excretion of nitrogenous waste primarily in the form of ammonia. Ammonia is highly toxic and requires a large amount of water for dilution and excretion. Aquatic animals, especially those living in freshwater environments, can easily excrete ammonia because water provides a suitable medium for dilution and removal. However, living in water does not necessarily mean that all aquatic reptiles excrete ammonia.

Uricotelism:
Uricotelism is the excretion of nitrogenous waste primarily in the form of uric acid. Uric acid is a relatively non-toxic, water-insoluble compound that requires little water for excretion. It allows animals to conserve water, making it an ideal form of excretion for animals living in dry environments, such as deserts. Uricotelism is commonly observed in birds and reptiles that have adaptations for conserving water, such as a specialized urinary system and the ability to convert ammonia to uric acid.

Ureotelism:
Ureotelism is the excretion of nitrogenous waste primarily in the form of urea. Urea is less toxic than ammonia but more toxic than uric acid. It requires a moderate amount of water for excretion. Ureotelism is commonly observed in mammals, including humans. It allows for the efficient excretion of nitrogenous waste while conserving water to some extent.

Aquatic reptiles are ureotelic on land:
The correct answer, option 'C', states that aquatic reptiles are ureotelic. This means that they primarily excrete nitrogenous waste in the form of urea. While some aquatic reptiles may also excrete ammonia in water, their main mode of excretion on land is urea. Ureotelism allows them to efficiently remove nitrogenous waste while conserving water, making it a suitable adaptation for their terrestrial lifestyle.

In conclusion, aquatic reptiles are ureotelic, meaning they primarily excrete nitrogenous waste in the form of urea. This adaptation allows them to efficiently remove waste while conserving water on land.

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