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Excetroy toxic wastes formed in animals ...

Excetroy toxic wastes formed in animals by

A

Metabolic activites

B

excess ingestion

C

1 and 2

D

None

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The correct Answer is:
### Step-by-Step Solution: 1. **Understanding Excretory Toxic Wastes**: - Excretory toxic wastes are substances produced in the body that are harmful and do not serve any beneficial function. These wastes need to be eliminated from the body to maintain homeostasis. 2. **Types of Excretory Wastes**: - The primary forms of excretory toxic wastes in animals include: - **Ammonia**: Highly toxic and primarily found in aquatic animals like fish. - **Urea**: Less toxic than ammonia and is the main excretory product in humans and most mammals. - **Uric Acid**: Even less toxic and is primarily excreted by reptiles and some amphibians. 3. **Formation of Excretory Wastes**: - Excretory toxic wastes are formed as a result of metabolic activities in the body. When food is consumed, it undergoes various biochemical processes to provide energy. During these metabolic processes, by-products are generated, which can be toxic and need to be excreted. 4. **Role of Ingestion**: - The process of ingestion (intake of food) and subsequent digestion leads to the formation of these wastes. If there is an excess intake of certain substances, it can lead to an increase in the amount of toxic waste produced. 5. **Conclusion**: - Therefore, excretory toxic wastes are formed primarily due to: - **Metabolic activities** (which produce waste as a by-product of energy production). - **Excess ingestion** (which can lead to an increased production of waste). - Both of these factors contribute to the formation of excretory toxic wastes in animals. ### Final Answer: Excretory toxic wastes in animals are formed by metabolic activities and excess ingestion.
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