In corals, the gonads are

Options

A. Endodermal
B. Ectodermal
C. Mesodermal.
D. Mesogleal.

Answer

### Step-by-Step Solution:

1. **Understanding the Structure of Corals**:
- Corals belong to the phylum Cnidaria and have a unique body structure. They are composed of two main layers of cells: the ectoderm (outer layer) and the endoderm (inner layer), with a jelly-like substance in between.

2. **Identifying the Location of Gonads**:
- The question asks where the gonads (reproductive organs) are located in corals. In corals, the gonads are not located in the ectoderm or endoderm, but rather in the mesoglea.

3. **Defining Mesoglea**:
- Mesoglea is the jelly-like substance that exists between the ectoderm and endoderm layers in cnidarians. It provides structural support and is crucial for the overall function of the organism.

4. **Gonads in Corals**:
- In corals, the gonads are specifically found in the mesoglea of the mesenteries. Mesenteries are thin tissue layers that help support the internal structure of the coral.

5. **Arrangement of Gonads**:
- The gonads in corals are arranged in a radial symmetry pattern, particularly at the base of the pharynx. This arrangement is typical for organisms exhibiting radial symmetry.

6. **Conclusion**:
- Based on the above information, the correct answer to the question "In corals, the gonads are situated in which of the following?" is **mesoglea**.

### Final Answer:
- The gonads in corals are situated in the **mesoglea**.

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