Articles > Still Water Community Plants – Quiz Still Water Community Plants – Quiz Quiz Choose the best answer. 1. The part of the plant that takes up water from the ground Leaves Stems Roots Flowers None 2. Much of the water absorbed is lost to the external environment, meaning there is a rapid water _____________ . gain loss absorption none of the above None 3. Source of oxygen photosynthesis cellular respiration aerobic respiration none of the above None 4. Required by plants Magnesium Nitrogen Phosphorus All of the above None 5. Required for photosynthesis Carbon dioxide Water Sunlight All of the above None Send Your Results (Optional) Your Name To Email Time's up