Which of the following is a group of senseorgans in Cockroach ?

Options

A. Antennae, eyes, maxillary palps, anal cerci
B. Antennae, compound eye, maxillary palps
C. Antennae ommatidia, maxillary palps, sternum
D. Antennae, eyes, maxillary palps, tarsus of walking legs and cerci

Answer

To determine which option represents a group of sense organs in a cockroach, we can analyze the options provided:

1. **Identify the Sense Organs in Cockroaches**:
- Cockroaches possess several sense organs, primarily located in the head and legs. The main sense organs include:
- **Antennae**: These are long, hair-like structures that are sensitive to touch and smell.
- **Compound Eyes**: These consist of numerous small units called ommatidia, which allow the cockroach to see in multiple directions.
- **Maxillary Palps**: These are sensory appendages associated with the mouthparts that help in tasting and feeling.
- **Tarsus of the Legs**: The last segment of the legs, which is sensitive to touch and vibrations.
- **Anal Sarcai**: These are sensitive to sound and vibrations.

2. **Evaluate Each Option**:
- **Option 1**: Antenna, Eyes, Maxillary Palps, and Endosar.
- Incorrect, as "Endosar" is not a recognized sense organ in cockroaches.
- **Option 2**: Antenna, Compound Eyes, Maxillary Palps.
- Incorrect, as it excludes other sensory structures like the tarsus and anal sarcai.
- **Option 3**: Antenae, Ommatidia, Maxillary Palps, and Sternum.
- Incorrect, as "Sternum" is not a sensory organ.
- **Option 4**: Eyes, Maxillary Palps, Tarsus of Walking Legs, and Sarcai.
- Correct, as it includes a comprehensive group of sensory organs found in cockroaches.

3. **Conclusion**:
- The correct answer is **Option 4**: Eyes, Maxillary Palps, Tarsus of Walking Legs, and Sarcai, as this option accurately lists a group of sense organs present in cockroaches.