Which of the following is a group of sense organs 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 anal cerci

Answer

To determine which of the following is a group of sense organs in a cockroach, we will analyze the options provided and identify the sensory organs present in the cockroach.

### Step-by-Step Solution:

1. **Identify the Sense Organs in Cockroach**:
- The cockroach has several sense organs located in different parts of its body. Key sensory organs include:
- **Antennae**: These are long, segmented structures that serve as the primary sensory organs for touch and smell.
- **Eyes**: Cockroaches have compound eyes, which are made up of many small units called ommatidia, as well as simple eyes known as ocelli.
- **Maxillary Palps**: These are sensory structures associated with the mouthparts, aiding in taste and touch.
- **Tarsus of Walking Legs**: The tarsus is sensitive to touch and vibrations.
- **Anal Saccae**: These are sensory organs that help detect sound and vibrations.

2. **Analyze Each Option**:
- **Option 1**: Antenna, eyes, maxillary palps, and anal saccae.
- This option includes several sensory organs but does not mention the tarsus.
- **Option 2**: Antenna, compound eye, maxillary palps.
- This option is missing other sensory organs like ocelli and tarsus.
- **Option 3**: Antenna, ommatidia, maxillary palps.
- While ommatidia are part of the compound eyes, this option does not mention other sensory organs like tarsus or anal saccae.
- **Option 4**: Antenna, eyes, maxillary palps, tarsus of walking legs, and anal saccae.
- This option includes all major sensory organs found in a cockroach.

3. **Conclusion**:
- The correct answer is **Option 4**: Antenna, eyes, maxillary palps, tarsus of walking legs, and anal saccae, as it encompasses all the sensory organs present in a cockroach.

### Final Answer:
**Option 4: Antenna, eyes, maxillary palps, tarsus of walking legs, and anal saccae.**