Daphnia resembles aphids in

Options

A. Parasitic mode of living
B. Aquatic habitat
C. Presence of carapace
D. Parthenogenesis for a few generations.

Answer

To solve the question "Daphnia resembles aphids in," we need to analyze the options provided and understand the characteristics of both Daphnia and aphids.

### Step-by-Step Solution:

1. **Understanding Daphnia**:
- Daphnia, commonly known as water fleas, are small crustaceans that primarily inhabit freshwater environments. They have a protective covering known as a carapace.

2. **Understanding Aphids**:
- Aphids are small sap-sucking insects that typically feed on the sap of plants. They are not aquatic and do not have a carapace.

3. **Analyzing the Options**:
- **Option 1: Parasitic mode of living**:
- Daphnia are not parasitic; they are free-living organisms. Aphids are also not parasitic in the traditional sense, as they feed on plant sap but do not live inside their hosts. Therefore, this option is incorrect.

- **Option 2: Aquatic habitat**:
- Daphnia are aquatic, but aphids are terrestrial. Thus, this option is incorrect as well.

- **Option 3: Presence of carapace**:
- Daphnia have a carapace, while aphids do not possess this feature. Therefore, this option is also incorrect.

- **Option 4: Parthenogenesis for a few generations**:
- Both Daphnia and aphids can reproduce asexually through parthenogenesis under favorable conditions. This is a significant resemblance between the two.

4. **Conclusion**:
- The correct answer is **Option 4: Parthenogenesis for a few generations**. This is the only characteristic that Daphnia and aphids share.