The reason for this because no plant grows in no light area.
Explanation:
In the second answer, we can see that the pond is covered with water lilies which have larger leaves covering the large surface area of water, not allowing sunlight to pass through it. Sunlight is necessary to carryout photosynthesis, which means plant don't grow in no light condition. Hence, no plant grows in no light area.
False the earth doesn't travel through space as a spaceship would the earth orbits around the sun. While a spaceship could just orbit the sun it usually has a destination in where the earth does not.