Identify a rootless plant (smallest plant) and entire plant represent in the form of roots.

Options

A. Hydrilla and Vanda respectively
B. Wolffia and Taeniophyllum respectively
C. Utricularia and Cuscuta respectively
D. Hydrilla and Pistia respectively

Answer

To solve the question, we need to identify a rootless plant that is also the smallest plant, as well as a plant that is represented entirely in the form of roots. Here’s a step-by-step breakdown of the solution:

### Step 1: Identify the Smallest Plant
- The smallest vascular flowering plant is **Wolffia eryza**, commonly known as **Water Meal**.
- It is recognized as the smallest plant in the world, measuring approximately **0.6 mm** in length.
- Wolffia eryza is a type of duckweed that floats on water bodies like streams and ponds.

### Step 2: Identify the Rootless Plant
- Wolffia eryza is also classified as a **rootless plant**.
- It does not have traditional roots; instead, it has a simple structure with 1 or 2 leaves that allow it to float and absorb nutrients directly from the water.

### Step 3: Identify the Plant Represented in the Form of Roots
- The plant known for being represented entirely in the form of roots is called **Tenuophyllum**.
- This plant is an example of a leafless orchid that forms small clumps and has a very small stem, making it distinct in its representation.

### Conclusion
- Therefore, the correct answers to the question are:
- The smallest and rootless plant is **Wolffia eryza**.
- The entire plant represented in the form of roots is **Tenuophyllum**.