Which ones posses larval stages ?

Options

A. Cockroach and Housefly
B. Housefly and Butterfly
C. Cockroach and Honey Bee
D. Grasshopper and Dragonfly.

Answer

To determine which organisms possess larval stages, we need to analyze the life cycles of the given options: cockroach and housefly, housefly and butterfly, cockroach and honey bee, and grasshopper and dragonfly.

### Step-by-Step Solution:

1. **Understand the Concept of Metamorphosis**:
- Metamorphosis is the process by which certain animals undergo significant changes in their form and structure during their life cycle. There are two types: complete metamorphosis and incomplete metamorphosis.

2. **Identify the Stages of Complete Metamorphosis**:
- Complete metamorphosis involves four distinct stages: egg, larva, pupa, and adult. Organisms that undergo this type of metamorphosis will have a larval stage.

3. **Analyze the Options**:
- **Cockroach and Housefly**:
- Cockroaches undergo incomplete metamorphosis (egg, nymph, adult) and do not have a larval stage.
- Houseflies undergo complete metamorphosis (egg, larva, pupa, adult) and do have a larval stage.
- **Housefly and Butterfly**:
- Both houseflies and butterflies undergo complete metamorphosis and possess larval stages.
- **Cockroach and Honey Bee**:
- Cockroaches, as mentioned, undergo incomplete metamorphosis. Honey bees also undergo complete metamorphosis (egg, larva, pupa, adult) and possess a larval stage.
- **Grasshopper and Dragonfly**:
- Grasshoppers undergo incomplete metamorphosis (egg, nymph, adult) and do not have a larval stage. Dragonflies also undergo incomplete metamorphosis.

4. **Conclusion**:
- The only option where both organisms possess larval stages is **Housefly and Butterfly**, as both undergo complete metamorphosis.

### Final Answer:
The correct option is **Housefly and Butterfly**.