Which one of the following statements is not correct

Options

A. Water Hyacinth, growing in standing water,drains oxygen from water that leads to death of fishes
B. Offspring produced by asexual reproduction are called clone
C. Microscopic, motile asexual reproductive structures are called zoospores
D. In Potato, Banana, and Ginger, the plantlets arise from internodes present in the modified root.

Answer

To determine which statement is not correct, we will analyze each of the four statements provided in the question.

### Step-by-Step Solution:

1. **Evaluate the First Statement:**
- The statement claims that "water hyacinth growing in standing water drains oxygen from the water that leads to the death of the fishes."
- **Analysis:** Water hyacinth (Eichhornia) is known to proliferate in water bodies and can deplete oxygen levels, which can indeed lead to fish deaths. This statement is **true**.

2. **Evaluate the Second Statement:**
- The statement says, "offsprings produced by asexual reproduction are called as clones."
- **Analysis:** Asexual reproduction results in offspring that are genetically and morphologically identical to the parent organism, referred to as clones. This statement is also **true**.

3. **Evaluate the Third Statement:**
- The statement mentions, "microscopic motile asexual reproductive structures commonly found in fungi and algae are zoospores."
- **Analysis:** Zoospores are indeed motile asexual reproductive structures found in certain fungi and algae. Therefore, this statement is **true**.

4. **Evaluate the Fourth Statement:**
- The statement claims, "the platelets arise from the internodes present in the modified root."
- **Analysis:** This statement is incorrect. The platelets (or tubers) in potato arise from the nodes of the stem, not the roots. Additionally, banana and ginger have modified stems called rhizomes. Therefore, this statement is **false**.

### Conclusion:
The statement that is not correct is the fourth one: "the platelets arise from the internodes present in the modified root."

### Final Answer:
**Option 4 is the correct answer, as it is the false statement.**

---