Growth zone of Hydra is

Options

A. Diffused
B. Near the foot
C. Below hypostome
D. In the middle.

Answer

To answer the question "Growth zone of Hydra is," we need to identify the specific part of the Hydra where growth occurs. Here’s the step-by-step solution:

### Step 1: Understand Hydra's Structure
Hydra is a simple, freshwater cnidarian that has a tubular body structure. It consists of a body column, a foot, and a tentacle region.

**Hint:** Familiarize yourself with the basic anatomy of Hydra, including its body parts.

### Step 2: Identify the Growth Zone
The growth zone in Hydra is primarily located at the base of the body column. This area is known as the "basal disc" or "foot," where new cells are produced, allowing for growth and regeneration.

**Hint:** Think about where new cells are formed in organisms and how regeneration occurs in Hydra.

### Step 3: Define the Growth Zone
The specific term for the growth zone in Hydra is the "interstitial cells" found in the basal region. These cells are responsible for the growth and regeneration of the Hydra.

**Hint:** Consider what types of cells are involved in growth and regeneration in organisms.

### Step 4: Conclusion
Thus, the growth zone of Hydra can be identified as the basal disc or the region containing interstitial cells, which facilitates growth and regeneration.

**Final Answer:** The growth zone of Hydra is the basal disc or the region with interstitial cells.

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