9th Class Biology PBA PAPER
9th Class Biology PBA PAPER
9th Class Biology PBA PAPER
(Senior Section)
Practical Based Assessment Subject: Biology
Class/Sec: IX/___
1. a. A student was asked to identify an animal and plant cell via microscope, enlist at least
four peculiar features that are considered to be the most distinctive ones in both cells.
Animal cell Plant cell
b. Why there is need to use staining technique while performing a microscopic study?
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c. When animal blood cell is taken from an animal, anticoagulant must be added in it, do you
agree with this statement or not?
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d. Animal blood cell is composed of diverse variety of cells, e.g. RBCS and thrombocytes.
Elaborate one similarity and one difference between both of them.
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e. In which part of the plant body maximum water is found?
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2. a. During rainy season, children sprinkle salt solution on earthworm, so it dies. Salt is not
poisonous (we use it daily). Explain why it die?
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b. When a piece of onion epidermis is placed in a solution (5%) salt and another one is placed
in a solution containing (0.1%) salt, in which of the solution endo and exo osmosis will occur?
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c. What do you interpret from the given diagrams?
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3. a. A group of students were assigned an experiment to detect the presence of protein in a
given piece of beef. Which appropriate biochemical test should they apply to find the
presence or absence of protein.
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b. Every enzyme works efficiently, do you agree with it? Enlist the optimum conditions for
working of pepsin.
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Class: IX Page 1 of 9 Subject: Biology
c. Following procedure is used to evaluate the physiology of pepsin, what do you think which
test tube will give positive result and why?
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d. Is there any difference between pepsin and pepsinogen?
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e. HCl is considered to be a highly acidic one even it could burn our skin as well, but in case of
stomach why its walls remain intact in spite of continuous production while digestion of food?
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f. In the table two enzymes are mentioned both have similar physiology but have some
peculiar features, complete the following table with appropriate answer.
Features Pepsin Trypsin
Nature of enzyme
Origin
4. a. Which test tube will show blue colouration on addition of I2 solution? Give reason?
A B C
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b. Give the name of two vegetables which contain starch.
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c. Into what product starch is converted by diastase?
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d. Can you use germinating seeds of grams or peas for the study of action of diastase? If not then
give reason.
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b. Can we use non germinating seeds in flask in place of germinating seeds? Give reason.
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d. What is the purpose of KOH in this experiment?
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8. A student conducted an experiment to examine the release of heat during the process of
respiration in germinating seeds.
control group?
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c. In which of the given flask, there is rise in temperature. Give reason to your answer.
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9. A student carried out three tests on the given food material, one with iodine solution, one
with Benedict’s solution and one with ethanol and water to find out its nutrient contents.
a. Identify which test required the use of heat.
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b. Name the different sources of protein.
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c. A student was asked to indicate any sugar (i.e. sucrose, fructose and maltose) in a food
sample, so what would happen on adding benedicts reagent? Will all sugars give same color
as glucose did, when tested with benedict’s solution?
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d. Fill in the table:
Sr. Sample/soluti Reagent /Act Observation Food component
No. on
a) Suspension ____________ Blue color Starch are present
b) ____________ Benedict solution ____________ Glucose is present
+Heat
c) Liquid A drop on filter ___________ Fats/lipids are
paper present
d) Sample 5% NaOH +1% Violet/pink/red _______________
CuSO4 and colour
shake
10. A student carried out an experiment to investigate the process of transpiration in potted
plant under bell jar.
b. Enlist two salient features of the kingdom to which this specimen belong.
e. There are large number of cell can be seen in give diagram, what do you think is it a
multicellular organism?
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f. Identify the type of bacteria from given slide A and B.
A B
12. Answer the following questions by observing the given diagram.
d. Morphology of frog’s oral cavity is given elaborate the names of missing parts.
e. Trace the pathway of food component in the following the phases of nutrition from
ingestion to defecation, which organs play their role in the process of digestion of food.
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f. Why frogs got disappeared during winter season?
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14. Following is the cross sectional view of leaf
a. Identify A & B from given diagram and differentiate between both types of cells.
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b. How dicot stem C.S differs from a monocot stem C.S?
Class: IX Page 6 of 9 Subject: Biology
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c. How a wood and nut shells are so hard ?
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d. What is significant role of root-tip-cells?
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e. Mention the type of this animal tissue?
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Fig A Fig B
b. How can you differentiate between shoot and root of apical meristem?
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c. What are leaf primordia?
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d. Which plant tissue are equivalent to those of animals?
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e. Label different parts of structural and functional unit of nervous system.
* Its structure of __________________
1 2
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b. Which stage shows synapsis formation?
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d. A great deal of research on causes and cure of cancer focuses in the genes that control the cell
cycle. Why?
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17. a.Identify the figure A and label the microscopic anatomy of following structure:
Fig A
19. a.Identify the given diagram A and B Differentiate between pulse rate and heart rate.
A B
b. State any one difference between diagram A and B
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