Uricotelic mode of passing out nitrogenous wastes in found ina)Insects and Amphibiansb)Reptiles and Birdsc)Birds and Annelidsd)Amphibians and ReptilesCorrect answer is option 'B'. Can you explain this answer?

Question

Answer

Bcz, Reptiles, birds, snails and insects excrete most of their waste nitrogen as uric acid in the form of pellet of paste with a minimum loss of water.

Answer

Becaz  reptiles and aves rarely drinks water hence they can not afford much water loss from the body (as in amonotelic and ureotelic mode of excretion) while in uricotelic excretion it insurers min water loss (50ml) so reptiles and birds shows uricotelic mode of excretion....

Answer

Uricotelic mode of passing out nitrogenous wastes is found in Reptiles and Birds.

Uricotelism is a type of excretion where the primary nitrogenous waste product is uric acid. Uric acid is a relatively insoluble compound that requires minimal water for its excretion. This mode of excretion is advantageous for organisms living in arid or terrestrial environments where water conservation is crucial.

Reptiles and Birds have evolved to excrete nitrogenous wastes in the form of uric acid as a way to conserve water. They have specialized organs called the kidneys that play a crucial role in this process.

The process of uricotelism in Reptiles and Birds can be explained as follows:

Kidney Function:
- Reptiles and Birds have highly efficient kidneys that filter the blood and selectively reabsorb water and essential nutrients.
- These kidneys have a unique structure that allows for the production of concentrated urine.
- The urine produced in reptiles and birds is hyperosmotic, meaning it has a higher concentration of solutes compared to the surrounding fluids.

Uric Acid Production:
- Reptiles and Birds metabolize proteins and nucleic acids, resulting in the production of ammonia as a byproduct.
- Unlike mammals, reptiles and birds convert ammonia into uric acid in the liver.
- Uric acid is a relatively non-toxic compound and requires less water for its excretion compared to other nitrogenous wastes like urea or ammonia.

Uric Acid Excretion:
- The concentrated uric acid is transported from the liver to the kidneys for excretion.
- In the kidneys, uric acid is combined with other waste products and excess ions to form a semi-solid paste-like substance called urate.
- Urate is then excreted from the kidneys into the cloaca, a common opening for excretion and reproduction in reptiles and birds.
- From the cloaca, urate is eliminated from the body along with feces.

Advantages of Uricotelism:
- Uric acid is highly insoluble, allowing for efficient water conservation.
- Uric acid can be excreted as a paste, minimizing water loss during excretion.
- Uric acid is less toxic than other nitrogenous wastes, reducing the energy requirements for detoxification.

In conclusion, the uricotelic mode of passing out nitrogenous wastes is found in Reptiles and Birds. This adaptation allows them to conserve water in arid or terrestrial environments, making them well-suited for their habitats.

Answer

Reptiles and birds are uricotelic

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