Anjali kashyap
Class X A Roll Number 03
MATERIAL REQUIRED :
1)Tyre tube
2)Some wet soil
PROCEDURE :
Step 1: First take the Tyre tube and cut it from a point to make it a circular pipe
Step 2 : Put the soil into the pipe from end of the Tyre
Step 3 : Then try to move the soil downward by the method of cokntraction and expansion
Step 4 : Do the same method, to move the soil downwards
OBSERVATION - We have observed that mud came out from the pipe by the method of contraction and expansion is the same process by which the food that we take reaches to our stomach from the Buccal cavity and this process of contraction and expansion called peristaltic movement .
ACTIVITY - LABELING OUR DIGESTIVE SYSTEM
Class X A Roll Number 03
Q1. Difference byetween starch and
sugar.
Ans- Starch-
They are hundreds of sugar molecule linked together i.e it is a complex
carbohydrate.
Sugar- It
is a simple molecule and a fast acting carbohydrate.
1) Difference between holozoic,
saprotrophic,parasitic nutrition.
Holozoic nutrition : It
is the mode of nutrition or feeding of complex organic matter by ingestion,
digestion and absorption.
Ex-human being, Amoeba
Parasitic nutrition: the
mode of obtaining food synthesised by other
Ex- round worm
Saprotrophic nutrition:
it is the type of nutrition in which organisms obtain nutrition from the dead
decaying organic matter
Ex- fungi and bacteria
2) Where does light reaction takes
place in plants?
A) Light reaction takes place in grana
of the chloroplasts which is present in the leaves of the plants.
3) Where does dark reaction takes place
in plants?
A) Dark Reaction takes place in the
stroma of the plants.
4) What is Grana?
A) Grana is the place where light
reaction takes place and it is present in the chloroplasts in the leaves.
5) Write the equation for the dark
reaction which is also known as calvin cycle?
A)
3 CO2 + 6 NADPH + 5 H2O + 9 ATP →
glyceraldehyde-3-phosphate (G3P) + 2 H+ + 6 NADP+ + 9 ADP + 8 Pi
(Pi = inorganic phosphate)
LIFE
PROCESSES
Q2. What is the function of
salivary amylase?
Ans- It is
a enzyme responsible for breakdown of starch into carbohydrates.
1.
Q3. What is
the pH of mouth?
2.
Ans- The pH
of mouth is 6.8.
Q4. What is
the function of Hcl , mucus and secreted in the stomach?
Ans-
The function of Hcl is -
1.
It kills
ingested bacteria.
2.
It provides
acidic medium for protein digestion.
3.
It splits
nucleoproteins into nucleic acids and proteins.
Functions
of mucus-
Its purpose
is to coat the passageways of the nose, throat , sinuses and keeping them from
becoming dry and protects the inner linning of the stomach from the action of
acid released by HCL.
OBJECTIVE : Peristaltic Movement in food pipe .
MATERIAL REQUIRED :
1)Tyre tube
2)Some wet soil
PROCEDURE :
Step 1: First take the Tyre tube and cut it from a point to make it a circular pipe
Step 2 : Put the soil into the pipe from end of the Tyre
Step 3 : Then try to move the soil downward by the method of cokntraction and expansion
Step 4 : Do the same method, to move the soil downwards
OBSERVATION - We have observed that mud came out from the pipe by the method of contraction and expansion is the same process by which the food that we take reaches to our stomach from the Buccal cavity and this process of contraction and expansion called peristaltic movement .
ACTIVITY - LABELING OUR DIGESTIVE SYSTEM
Procedure : Label all the
organs at their correct place and observe the direction of
the arrows
Conclusion : We
conclude that our digestive system consist different organs :
1) Buccal cavity
2) Oesophages
3) Liver
4) Stomach
5) Gall blader
6) Pancreas
7) Large intestine
8) Small intestine
9) Appendix
10) Rectum
11) Anus
1) Buccal cavity
2) Oesophages
3) Liver
4) Stomach
5) Gall blader
6) Pancreas
7) Large intestine
8) Small intestine
9) Appendix
10) Rectum
11) Anus
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