Read the following statements and find out the incorrect statement.

Options

A. In organisms, exhibiting internal fertilisation the male gamete is non-motile but in seed plants the male gamete is motile
B. Organisms exhibiting external fertilisation show great synchrony between the sexes and release a large number of gametes into the water in order to enhance the chances of syngamy
C. In frogs and bony fishes, large number of offsprings are produced as they are extremely vulnerable to predators threatening their survival upto adulthood
D. In organism exhibiting internal fertilisation, even though the number of sperms produced is very large, there is a significant reduction in the number of eggs produced

Answer

To solve the question of identifying the incorrect statement regarding reproduction in organisms, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: We need to read the provided statements and determine which one is incorrect.

2. **Analyze Each Statement**:
- **Statement 1**: "In organisms exhibiting internal fertilization, the male gamete is non-motile whereas, in case of seed plants, the male gamete is motile."
- This statement is incorrect because, in internal fertilization, the male gamete is typically motile (e.g., sperm). In seed plants, the male gamete (pollen) is also motile.

- **Statement 2**: "Organisms exhibiting external fertilization show great synchronicity between the sexes and release a large number of gametes into the water to enhance the chances of syngamy."
- This statement is correct as external fertilization involves the release of numerous gametes to increase the likelihood of fertilization.

- **Statement 3**: "In frogs and bony fishes, a large number of offspring are produced as they are extremely vulnerable to predators threatening their survival up to adulthood."
- This statement is also correct. Frogs and bony fishes produce many offspring to counteract high predation rates.

- **Statement 4**: "In organisms exhibiting internal fertilization, even though the number of sperm produced is very large, there is a significant reduction in the number of eggs produced."
- This statement is correct. In many species, including humans, a large number of sperm are produced compared to the fewer eggs.

3. **Identify the Incorrect Statement**: Based on the analysis, the first statement is incorrect.

4. **Conclusion**: The incorrect statement is the first one: "In organisms exhibiting internal fertilization, the male gamete is non-motile whereas, in case of seed plants, the male gamete is motile."

### Final Answer:
The incorrect statement is: **"In organisms exhibiting internal fertilization, the male gamete is non-motile whereas, in case of seed plants, the male gamete is motile."**

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