Nitrogenous excretory product of frog tadpole is:

Options

A. Ammonia
B. Urea
C. Guanine
D. Uric acid

Answer

**Step-by-Step Solution:**

1. **Understanding the Organism**: Recognize that the question pertains to the nitrogenous excretory products of a frog tadpole. Frog tadpoles are aquatic and have physiological characteristics similar to fish.

2. **Identifying Nitrogenous Wastes**: Familiarize yourself with the common types of nitrogenous wastes produced by animals, which include ammonia, urea, uric acid, and guanine.

3. **Comparing to Fish**: Since frog tadpoles resemble fish in their habitat and physiology, we can infer that their excretory products might be similar to those found in fish.

4. **Determining the Excretory Product**: In fish, the primary nitrogenous waste is ammonia, which is highly toxic and requires a large amount of water for its excretion. Given that tadpoles live in water, they also excrete ammonia.

5. **Evaluating Other Options**:
- Urea is less toxic and is primarily found in adult frogs, not in tadpoles.
- Guanine is a nucleobase and not an excretory product.
- Uric acid is found in insects and is less soluble in water, making it unsuitable for aquatic animals like tadpoles.

6. **Conclusion**: Based on the above reasoning, the nitrogenous excretory product of frog tadpoles is ammonia.

**Final Answer**: The nitrogenous excretory product of frog tadpole is **ammonia**.

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