The lamina of the leaf of a plant P is modified into hollow tube . The leaf apex forms kind of lid which can open or close the mouth of hollow tube. When an organisms Q falls in the hollow tube, the lid closes automatically killing the organisms. The walls of hollow tube secrete digestive juices which digest the complex substances R present in the body of the organisms to form simpler substances S. these simpler Substances are then absorbed by the walls of the hollow tube and used by the plant P
What could the plant P be ?

Answer

**Step-by-Step Solution:**

1. **Understanding the Structure of Plant P:**
- The question describes a plant whose leaf (lamina) is modified into a hollow tube. This indicates that the plant has specialized adaptations for capturing and digesting organisms.

2. **Function of the Leaf Apex:**
- The apex of the leaf forms a lid that can open and close the mouth of the hollow tube. This suggests that the plant can trap prey, which is a characteristic of certain carnivorous plants.

3. **Behavior Upon Prey Capture:**
- When an organism (Q) falls into the hollow tube, the lid closes automatically, indicating a mechanism for trapping prey. This is a typical feature of insectivorous plants that rely on capturing insects for nutrients.

4. **Digestive Process:**
- The walls of the hollow tube secrete digestive juices that break down complex substances (R) found in the organism. This shows that the plant has the ability to digest organic matter, which is essential for nutrient absorption.

5. **Formation of Simpler Substances:**
- The complex substances are digested into simpler substances (S), which are then absorbed by the plant. This indicates that the plant can utilize the nutrients obtained from its prey for growth and development.

6. **Identifying the Plant:**
- Given the description of the plant having a hollow tube, a lid, and the ability to digest prey, it is likely that the plant in question is a type of insectivorous plant. The specific characteristics point towards the **pitcher plant**, scientifically known as **Nepenthes**.

7. **Conclusion:**
- Therefore, the plant P is identified as the **pitcher plant (Nepenthes)**, which has adaptations for trapping and digesting insects.

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