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INVESTIGATORY PROJECT

INDEX
Serial no: CONTENT
1 Aim
2 Theory
3 Materials Required
4 Procedure
5 Observation
6 Result
7 Conclusion
8 Bibliography

AIM
To determine if bean plants grew stronger and healthier by the
addition of the right amount of sugar to their watering.
It is believed that plants that receive 50 grams of sugar per liter
of water would help bean plants grow to be stronger, healthier,
and larger because they would get energy from the sugar.
The main objective of this study was to investigate the effect of
sugar on bean plant growth.

THEORY
Sucrose:-
Sucrose is a complex molecule consisting of two monosaccharides. In
common language it is called as table sugar or cane sugar. Sucrose is
the scientific name of sugar. The two monosaccharides are glucose
and fructose. Sucrose is a non-reducing sugar.
Plants use sucrose as a storage molecule. It is produced by plants
naturally and are used by the plants cells for storing energy. Sucrose
provides the energy required to perform physical and mental functions
in our body. The body breaks down foods such as sucrose and starch
into fructose and glucose during digestion. The fructose and glucose
are metabolized by the body to release energy to the cells.
Sugar in plants:-
Sugar water stress affects practically every aspect of plant growth and
metabolism. Plant responses to sugar water deficit depend upon
various factors such as duration and degree of stress, growth stage,
and time of stress exposure
Plants need sucrose to survive. If a plant is treated with a strong
solution of sugar water, a situation is created in which the water
outside its cells has a higher percentage of soluble materials than the
water inside. The increased sugar content in the soil serves as food for
many numbers of microorganisms. Beneficial effects include all the
activities that goes on in hot compost: nitrogen fixation, toxin
decomposition and nutrient production. These desired effects are the
reasons for adding sugar to the fertilizing agents.
Bean plant:-
A bean is the seed of one of several genera of the flowering plant
family Fabaceae, which are used as vegetables for human or animal
food.

MATERIALS REQUIRED:
▪ Three bean seeds
▪ Three pots of same size
▪ Water for the plants
▪ 75 grams of sugar
PROCEDURE:
1. Take three bean seeds and three pots of the same size
2. Take same amount of soil in each pot and do not add any extra
nutrients or fertilizers in the pots.
3. Grow the plants under 24 hours light for the same length of
time.
4. For the FIRST plant give only water without adding any sugar
into it.
5. For the SECOND plant give 25 grams of sugar per one litre of
water.
6. For the THIRD plant give 50 grams of sugar per one litre of
water.
7. Grow the plants for 30 days [1 month]
8. After 30 days, remove each plant gently, rinse them in water and
measure the lengths of their stems and roots separately.

OBSERTVATION
POT A B C
Amount of sugar No sugar in water 25g of sugar/litre 50g of sugar/litre
in water
Height of STEM _ cm [shortest] _ cm [taller] _ cm [tallest]

POT A B C

Amount of sugar No sugar in water 25g of sugar/litre 50g of sugar/litre


in water

Height of ROOT _ cm [shortest] _ cm [taller] _ cm [tallest]

RESULT
→ The plant watered with 50g of sugar per one litre of water was
the tallest, strongest and healthiest among the three.
→ The plant A which was given water without any sugar grew _
cm
→ The plant B which was given water with 25g of sugar per litre
grew _ cm
→ The plant C which was given water with 50g of sugar per litre
grew _ cm
→ This was determined by proper measurement and inspection.

CONCLUSION
 SUGAR IS VERY ESSENTIAL FOR BEAN PLANT
GROWTH

→ The moisture of the soil stays in the pots watered with sugar
water. Water moves across the membranes by a process called
osmosis.
→ When we add more amount of sugar to the water, we are
changing the osmotic potential of the pure water.
→ Less water will move into the root because of this change in the
osmotic potential. So, the soil will be moisturous.
→ One way that the sugar water may affect the plant growth is that
it may influence the growth of microorganisms in the area
surrounding the roots. This can be good or bad for the plants
→ The sugar concentration may also have an effect. Less sugar
[50g] is good for bean plants whereas more amount of sugar
affects the plant negatively.

BIBLIOGRAPHY
www.1000sciencefairprojects.com
https://biologydictionary.net/sucrose/

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