Largest flower belongs to
(a) An epiphyte Vanda
(b) A parasite Rafflesia
(c) A saprophyte Neottia
(d) Tree Alnus with symbiotic bacteria

Options

A. An epiphyte Vanda
B. A parasite Rafflesia
C. A saprophyte Neottia
D. Tree Alnus with symbiotic bacteria

Answer

To determine which option corresponds to the largest flower, we can analyze each of the given choices step by step.

### Step 1: Understand the Options
We have four options to consider:
- (a) An epiphyte Vanda
- (b) A parasite Rafflesia
- (c) A saprophyte Neottia
- (d) Tree Alnus with symbiotic bacteria

### Step 2: Identify Characteristics of Each Plant
- **Vanda (Option A)**: This is an epiphytic orchid known for its beautiful flowers but not the largest.
- **Rafflesia (Option B)**: This is a parasitic plant known for producing the largest flower in the world. It is a root parasite and can have a flower diameter of up to 1 meter and weigh around 10 kg.
- **Neottia (Option C)**: This is a saprophytic orchid, which means it derives nutrients from decaying organic matter. It does not produce large flowers.
- **Alnus (Option D)**: This is a tree that forms symbiotic relationships with bacteria, but it is not known for having large flowers.

### Step 3: Compare the Flower Sizes
Among the options, Rafflesia is specifically noted for its exceptionally large flower size, which is a key characteristic that distinguishes it from the others.

### Step 4: Conclusion
Based on the analysis, the largest flower belongs to:
**(b) A parasite Rafflesia.**