Which of the following statements is incorrect?
The flora of a place is heavily defined by availability and quality of water.
The availability of light on land is closely linked with that of temperature since Sun is the source for both.
Topography does not affect biodiversity.
Soil composition also affects the seepage of water into ground.
As we have already discussed in Major Abiotic Factors: Light & Soil -
Since plants produce food through photosynthesis, a process which is only possible when sunlight is available as a source of energy, we can quickly understand the importance of light for living organisms, particularly autotrophs.
Hence, the correct option is (c).