stem
Through vascular tissue of phloem
From cell to cell
Plants need oxygen so they will not grow if there is no oxygen. So if we travel to Mars or the moon, we will have to have to bring oxygen for our greenhouses. Plants improve air quality so we need plants when we visit other worlds.
plants get their food from sunlight
I'm assuming that you are referring to non-vascular plants, to which the answer is, despite having no vascular tissue (xylem and phloem) there are still tissues within that specialise in transportation of nutrients.
Photosynthesis
Plants get there food from Photosynthesis which is nergy from the sun
Remains of vegetables are the best food for plants.
Herbivores depend on plants for food.
No. It is actually thermal energy from the sun that is transformed into food/chemical energy.
Plants get their food from the roots and not from the flowers
The animals prepare their food from the plants to eat them
Plants store food for energy.