1. Sugar beets plants start from tiny seeds and grow to be large plants. Where does the bulk of their mass come from? A. nutrien
ts absorbed from the soil B. carbon dioxide taken in from the surrounding air C. sugars absorbed from the soil D. oxygen taken in from the surrounding air 2. In what part of the beet pant is the excess sucrose stored? A. root B. leaves C. stem
1. B. carbon dioxide taken in from the surrounding air
2. A. Root
Explanation:
Sugar beet plant carries out photosynthesis and stores the excess of the sucrose in its taproots. During the process of photosynthesis, the plant absorbs CO2 from the air, water from the soil and synthesizes organic sugars in the presence of sunlight.
Atmospheric CO2 contributes carbon and oxygen atoms to the formed sugars which in turn are stored in plant parts. Therefore, atmospheric CO2 makes most of the mass of the photosynthesizing plants such as sugar beets. The taproots of beet plants are modified into storage roots to store the excess of the organic sugars.
Blood is carried away from the heart by arteries. Blood that is rich in oxygen. Blood that is low in oxygen is returned to the heart by veins. there is more pressure in arteries than in veins.
