Resins are obtained from ________

Explanation

**Step-by-Step Solution:**

1. **Understanding Resins**: Resins are viscous fluids that can harden upon heating. They are important materials used in the polymer industry.

2. **Source of Resins**: Resins are primarily obtained from certain types of plants. Specifically, they are secreted by plants in response to injury.

3. **Identifying the Plant Group**: The plants that produce resins belong to a specific group known as gymnosperms.

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