Fate of Glucose inside plants
Stored
as starch: Glucose is
converted into starch and is transported away to be stored in roots,
stem and leaves. This is then ready made food to be used when
photosynthesis is not taking place i.e., during winter. Glucose is
soluble and quite reactive substance. It is not, therefore, a
handy storage molecule. Unlike glucose, starch is insoluble, uncreative
and convenient to store because it doesn't swell the storage cells by
osmosis. Hence preventing damage to the cells. Stored
in seeds: Fats and oils, commonly
known as lipids, found in seeds are made from glucose. For
example, Sunflower seeds consist of a lot of oil - used to make
margarine and cooking oil. Required for transport: Glucose is used to
make energy, which is required to transport substances around the plant,
especially for ACTIVE UPTAKE of minerals in the roots. Used to
make fruit: Glucose may be used to make
other sugars, such as sucrose for storing in fruits. Most fruits
taste nice and are eaten by animals. This is one of the ways plants are
adapted to spread their seeds around. Used to make cell walls: Glucose is used to make other
organic substances, such as cellulose for making cell walls, particularly
in fast growing plants. Used to
make proteins: Nitrates from the soil
combine with glucose to make amino acids which are then put together to
make proteins. Required for respiration: Plants make glucose in the
leaves. Some of that is used straight away for respiration to get
energy, which is then used to convert rest of the glucose together with
minerals from the soil into many other useful substances. These are
then used for new cells and growth.
Tags:Plants, Glucose, Starch, Fate of glucose