Why you never see cattle or goasts browsing on weed Calotropis ?

Options

A. The plant produces highly poisonous tannins.
B. The plant produces quinine which is bitter in taste.
C. The plant produces poisonous cardiac glycosides.
D. The plantbears prickles.

Explanation

### Step-by-Step Solution:

1. **Identify the Plant**: The question refers to Calotropis, which is a genus of flowering plants commonly known as milkweed.

2. **Understand the Characteristics of Calotropis**: Calotropis is known for its unique features, including its ability to produce toxic compounds.

3. **Toxic Compounds**: Calotropis produces highly poisonous cardiac glycosides. These compounds are toxic to many herbivores, including cattle and goats.

4. **Defense Mechanism**: The production of these toxic compounds serves as a defense mechanism against herbivores. This means that the plant has evolved to deter animals from feeding on it.

5. **Impact on Herbivores**: Due to the presence of cardiac glycosides, cattle and goats avoid browsing on Calotropis. The toxicity acts as a deterrent, preventing these animals from consuming the plant.

6. **Conclusion**: Therefore, the reason you never see cattle or goats browsing on Calotropis is that it produces highly poisonous cardiac glycosides, which are harmful to them.

### Final Answer:
Cattle and goats do not browse on Calotropis because it produces highly poisonous cardiac glycosides that act as a defense mechanism against herbivores.

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