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 from the given options, we will analyze each statement one by one.

### Step-by-Step Solution:

1. **Read the Statements**: We have four statements to evaluate. The first step is to carefully read each statement to understand what they claim.

2. **Analyze Statement 1**:
- The statement claims that in organisms exhibiting internal fertilization, the male gamete is non-motile, but in seed plants, the male gamete is motile.
- **Evaluation**: This statement is incorrect. In organisms with internal fertilization (like humans), the male gamete (sperm) is motile. The claim that the male gamete is non-motile is false. In seed plants, the male gamete (pollen) is also motile in the sense that it can move to the ovule for fertilization.

3. **Analyze Statement 2**:
- This statement discusses organisms exhibiting external fertilization, stating that they show great synchrony between the sexes and release a large number of gametes into the water to enhance chances of syngamy.
- **Evaluation**: This statement is correct. External fertilization often involves the release of many gametes to increase the likelihood of fertilization.

4. **Analyze Statement 3**:
- The statement mentions that frogs and bony fishes produce a large number of offspring because they are extremely vulnerable to predators.
- **Evaluation**: This statement is also correct. The high number of offspring is a survival strategy against predation.

5. **Analyze Statement 4**:
- This statement claims that in organisms exhibiting internal fertilization, although a large number of sperms are produced, there is a significant reduction in the number of eggs produced.
- **Evaluation**: This statement is correct. Internal fertilization typically involves fewer eggs being produced compared to the number of sperm.

6. **Conclusion**: After analyzing all four statements, we conclude that Statement 1 is the incorrect one.

### Final Answer:
The incorrect statement is **Statement 1**: "In organisms exhibiting internal fertilization, the male gamete is non-motile, but in seed plants, the male gamete is motile."

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