Insectivorous plant, engulf insect to overcome the deficiency of element.

Options

A. Sulphur
B. Carbon
C. Nitrogen
D. Potassium

Explanation

### Step-by-Step Solution:

1. **Understanding Insectivorous Plants**: Insectivorous plants are specialized plants that have adapted to capture and digest insects. They usually grow in nutrient-poor soils where essential nutrients, particularly nitrogen, are scarce.

2. **Identifying Nutrient Deficiencies**: Plants typically absorb nutrients such as sulfur, carbon, and potassium from the soil and water. However, nitrogen is often not readily available in a form that plants can easily absorb.

3. **Role of Nitrogen**: Nitrogen is a crucial element for plant growth as it is a key component of amino acids, proteins, and nucleic acids. A deficiency in nitrogen can lead to stunted growth and poor health in plants.

4. **Insect Capture Mechanism**: To overcome the deficiency of nitrogen, insectivorous plants have developed mechanisms to capture insects. They use various trapping methods such as sticky leaves, snap traps, or pitfall traps to ensnare their prey.

5. **Digestion and Nutrient Absorption**: Once the insects are captured, the plants secrete digestive enzymes to break down the insect's body. This process allows the plant to absorb the nitrogen and other nutrients from the insect's remains.

6. **Conclusion**: Therefore, insectivorous plants consume insects primarily to fulfill their nitrogen deficiency, which is not adequately met through soil or water.

### Final Answer:
Insectivorous plants engulf insects to overcome the deficiency of nitrogen.

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