A landform is a natural feature of the solid surface of the Earth or other planetary body. Landforms together make up a given terrain, and their arrangement in the landscape is known as topography.
The leaf because it is the major structure for photosynthesis in a plant.he leaf would have the most chloroplasts because it is the major  structure for photosynthesis in a plant.
Although all cells in the green parts of a plant have chloroplasts, most of the energy in higher plants is captured in the leaves-certain species adapted to conditions of strong sunlight and aridity, such as many Euphorbia and cactus species, have their main photosynthetic organs in their stems.