Statocysts are the

Options

A. lateral locomotory appendages in annelids
B. Suckers present in parasitic platyhelminthes
C. Balance organs in arthopods
D. Stinging capsules in cnidarians

Explanation

**Step-by-Step Solution:**

1. **Understanding the term "Statocysts":**
- Statocysts are specialized sensory organs that help in maintaining balance and orientation in certain animals.

2. **Identifying the options given:**
- The options provided are:
a) Lateral locomotory appendages in annelids
b) Suckers present in parasitic platyhelminths
c) Balance organs in arthropods
d) Stinging capsules in cnidarians

3. **Analyzing each option:**
- **Option a:** Lateral locomotory appendages in annelids are known as parapodia, not statocysts. Thus, this option is incorrect.
- **Option b:** Suckers in parasitic platyhelminths (flatworms) are not statocysts. This option is also incorrect.
- **Option c:** Statocysts are indeed balance organs found in arthropods, such as cockroaches. This option is correct.
- **Option d:** Stinging capsules in cnidarians are called nematocysts, not statocysts. Therefore, this option is incorrect.

4. **Conclusion:**
- After analyzing all the options, the correct answer is that statocysts are balance organs in arthropods.

**Final Answer:** Statocysts are the balance organs in arthropods.

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