Which of the following pairs is wrong ?

Options

A. Uricotelic ……. Birds
B. Ureotelic …….. Insects
C. Ammonotelic ……. Tadpole
D. Ureotelic ……… Elephant

Explanation

To determine which of the following pairs is wrong, we need to analyze each option regarding the type of nitrogenous waste they excrete.

1. **Uricotelic Birds**: Birds are known to excrete nitrogenous waste primarily in the form of uric acid. This is true, as birds are classified as uricotelic organisms.

2. **Insects**: Insects also excrete nitrogenous waste in the form of uric acid, making them uricotelic as well. This statement is correct.

3. **Ammonotelic Tadpole**: Tadpoles, which are the larval stage of frogs, excrete ammonia as their nitrogenous waste. Since they are aquatic, they can afford to excrete ammonia directly into the water. This statement is also correct.

4. **Elephant is Ureotelic**: Elephants, being mammals, excrete their nitrogenous waste in the form of urea. This means they are ureotelic, which is accurate.

Now, let's summarize the findings:

- **Uricotelic Birds**: Correct
- **Insects**: Correct
- **Ammonotelic Tadpole**: Correct
- **Elephant is Ureotelic**: Correct

However, the question asks for the wrong pair. The only pair that is incorrectly stated is the second one regarding insects, as it implies that they are not ureotelic, which is misleading.

Thus, the answer to the question is that the wrong pair is the one that states insects are uricotelic, which is true, but the context implies a misunderstanding.

**Final Answer**: The wrong pair is the one regarding insects, as it is misleading in the context of the question.