The correct option is (c).
Explanation
Insectivorous plants (carnivorous plants) are specialized autotrophs adapted to grow in nutrient-poor environments, particularly soils deficient in nitrogen. They exhibit specific morphological adaptations to trap organisms for nutrient supplementation.
Statement-wise Analysis:
- Statement 1 is Incorrect: Insectivorous plants trap insects primarily to fulfill their nitrogen requirements, not for carbohydrates. The soil in which they grow is usually deficient in nitrogen, and insect digestion provides the necessary nitrates.
- Statement 2 is Correct: These plants possess chlorophyll and are capable of performing photosynthesis. They synthesize their own carbohydrates (food) using sunlight, carbon dioxide, and water, making them producers.
- Statement 3 is Correct: The pitcher-like structure in plants like Nepenthes is a modification of the leaf. Specifically, the leaf lamina modifies to form the pitcher, while the leaf apex forms a lid that can open and close the mouth of the pitcher.
Key Takeaway:
Insectivorous plants are partial heterotrophs; they are autotrophic regarding carbon (via photosynthesis) but rely on external sources (insects) for nitrogen.