Which one of the following statements is not correct?

Options

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

Answer

To determine which statement is not correct, we will analyze each statement one by one.

1. **Statement 1:** "Offspring produced by asexual reproduction are called clones."
- Asexual reproduction involves the production of offspring without the fusion of gametes, resulting in genetically identical copies of the parent. Therefore, this statement is **correct**.

2. **Statement 2:** "Microscopic motile asexual reproductive structures are called zoospores."
- Zoospores are indeed motile asexual spores that have flagella, allowing them to move. This statement is also **correct**.

3. **Statement 3:** "In potato, onion, ginger, the plantlet arises from the internodes present in the modified stem."
- In potatoes, the plantlets arise from the eyes (nodes) of the tuber. In onions and ginger, new plantlets also arise from the nodes, not the internodes. Therefore, this statement is **not correct**.

4. **Statement 4:** "Water hyacinth growing in standing water drains oxygen from water that leads to the death of fishes."
- Water hyacinth is known to rapidly grow in water and can deplete oxygen levels, leading to the death of fish and other aquatic organisms. This statement is **correct**.

Based on the analysis, the statement that is not correct is:

**Answer:** Statement 3: "In potato, onion, ginger, the plantlet arises from the internodes present in the modified stem."