Name the basic nitrogenous catabolite of proteins produced in a whale. In what form is it eliminated from the body ? What are the conditions necessary for this kind of excretion ?

Explanation

### Step-by-Step Solution

1. **Identify the Basic Nitrogenous Catabolite of Proteins in Whales**:
- The primary nitrogenous waste product resulting from protein metabolism in whales is **urea**. Whales, like many mammals, convert ammonia (a toxic byproduct of protein metabolism) into urea, which is less toxic and can be excreted safely.

2. **Form of Elimination from the Body**:
- Urea is eliminated from the body primarily through **urine**. Whales, being ureotelic animals, excrete urea along with water, which helps in diluting the urea to prevent toxicity.

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