What is true of Hydra

Options

A. Marine
B. Bilateral Symmetry
C. Carnivorous
D. All the above.

Answer

To determine what is true of Hydra, let's analyze the options provided step by step.

### Step 1: Identify the classification of Hydra
- Hydra belongs to the phylum Coelenterata (also known as Cnidaria) and specifically to the class Hydrozoa.

**Hint:** Remember that classification helps in understanding the characteristics of an organism.

### Step 2: Evaluate the first option - "Marine"
- Hydra is primarily a freshwater organism, not a marine one. Therefore, this option is incorrect.

**Hint:** Consider the habitat of the organism when evaluating options.

### Step 3: Evaluate the second option - "Bilateral symmetry"
- Hydra exhibits radial symmetry, which is characteristic of coelenterates, rather than bilateral symmetry. Thus, this option is also incorrect.

**Hint:** Recall the symmetry types associated with different animal groups.

### Step 4: Evaluate the third option - "Carnivorous"
- Hydra is indeed carnivorous. It captures its prey using specialized cells called nematocysts found in its tentacles and mouth.

**Hint:** Think about the feeding mechanisms of the organism to assess its dietary habits.

### Step 5: Evaluate the fourth option - "All of the above"
- Since the first two options are incorrect, this option cannot be true.

**Hint:** If any individual option is false, "all of the above" cannot be true.

### Conclusion
Based on the evaluations:
- The correct statement about Hydra is that it is **carnivorous**.

**Final Answer:** Hydra is carnivorous.