Lipids are found in cell membranes in double layer which is called "Lipid-bilayer".
So, option A is your answer.
Hope this helps!
Because plants go through a cycle(the cycle is seed, seedling, plant, flower and tree.) and it takes time for the plant food, water, and nutrients to go though the plant.
The amount of time that the 2 species have been evolving apart??
They contain high protein, starch and oil reserves that help in the early stages of growth and development in a plant.
These plants colonize habitats, and exclude the native plants and animals. Since they decrease native biodiversity, they arebad for the environment.
