Name the 4 types of animals on the basis of their excretory matter.

Explanation

To classify animals based on their excretory matter, we can categorize them into four main types based on the form in which they excrete nitrogenous waste. Here’s the step-by-step solution:

### Step 1: Understand Excretory Matter
Excretory matter primarily refers to nitrogenous waste produced by animals as a result of metabolism. The primary forms of nitrogenous waste are ammonia, urea, and uric acid.

### Step 2: Identify the Types of Excretory Animals
1. **Ammonotelic Animals**: These animals excrete nitrogenous waste in the form of ammonia. Ammonia is highly toxic and requires a lot of water to be safely excreted. Common examples include aquatic animals like fish and amphibian larvae.

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