Kerala Class 9 Second Term Question Paper 2025 Biology

A SamagraShiksha Kerala E-906-BIO
Summative Assessment - II, 2025-26

Class : X Biology Time: 1½ Hours
Score: 40

Instructions

The first 15 minutes are cool-off time.
This time can be used for reading the questions and planning the answers
Write answers only according to the instructions and questions.
While writing the answers, consider the score and time.
Question numbers 6, 10, 13, 16 and 18 are given choices.

Answer all questions from lto 4. 1score each. (4 x1=4)
1 Analyse the statement and the reason, and ch0ose the correct änswer fromn the given options.
(1)
Statement: Osteoporosis is the condition in which parts of bones get damaged and the
density of bones deteriorates.
Reason: The stretching or breaking of ligaments.
a) Statement correct,Reason incorrect
b Statement incorrect ,Reason correct
c) Both the statement and reason are correct
d) Both the statement and reason are incorrect
2. Analyse the process illustrated below, which occurs when dough is leavened using yeast.
Select the products indicated by 'X from the options. (1)

Glucose

ATP

Pyruvic
acid

a) Lactic acid, Carbon dioxide
b) Lactic acid, Oxygen
c) Alcohol, Carbon dioxide
d) Alcohol, Oxygen

E-906-BIO 1/6

3. Analyse the pairs written in columns Aand B, andwrite the correct one from the options. (1)

Column A Column B
P. Salivary amylase i. digest the lipid into fatty acid and glycerol
Q. Proteases ii. partially digest the proteins
R. Trypsin 111. convert proteins into amino acids
|S. Lipase iv. begins the digestion of starch

a P-iv. Q-iii, R-ii, S-i b) P ii,Q iv, R i, S ii
c) P i , Qi, R-iv, Sii d P-i,Q-ii, R-iii, S-iv
4 Examine the statements and choose the correct one from the options given below. (1)
1
Water is lost as water vapour through the pore called hydathode.
ii. Oxygen and carbon dioxide are expelled through thepores called lenticels.
iii. Solid wastes are excreted in plants through the shedding of ripened leaves and fruits.
a) i correct: ii, iii incorrect b) i iicorrect; iii incorrect
c) i incorrect; ii, ii correct d) i, ii, iii correct
Answer questions from 5 to 11. Each carries 2 score. (7x2 = 14)
5 A stageof ventilation is illustrated. Analyse the illustration and answer the question given
below. (2)

Identify 'X and 'Y, and explain how their contraction helps in the movement of air into the
lungs.
6 A. The characteristic feature of the process of osmosis is given as indicator.
Based on it, explain the situations given below. (2)
Indicator:

Water molecules move from a region of its higher concentration to a region of
its lower concentration through a semi permeable membrane.

a) A mango shrinks when it is put in salt.
b) Seeds swellwhen placed in pure water.
OR

E-906-BIO 2/6

B Explain the reasons for the given statements based on the transport of substances.
a) The fragranceof flowers can be sensed from a distance. (1)
b Movement of glucose molecules into the cell. (1)
7 Apart of the grafliti from a primary health centre is given.
Drinking insufficient quantity of water and not urinating at
regular intervals affect the health of the kidneys.

Do youagree with this statement? Why? (2)
Observethe images and answer the following questions.

X

a) How does the structural framework differ in these organisms? (1)
b) Write the different functions performed by the structural framework in the
organism Y'. (1)

9. Both photosynthesis and respiration occurs simultaneously in the mesophyllcells of leaves
during daytime. How does this help in the process of gaseous exchange in plants? (2)

10. A Write the answers to the following questions based on the process of photosynthesis.
a) What is the necessity of splitting of water during photosynthesis? (1)
b) What are the materials required for the reaction that takes place in the stroma of the
chloroplast? (1)
OR
B. Answer the following questions based on the storage of nutrients in plants.
a) The product formed as aresult of photosynthesis cannot be stored in the same form.
Why? (1)
b) This product is stored in plants às different nutrients. What are they? (Write any two.)(1)
11. A part of the conversation of a doctor who led a class in a health seminar is given below.
Analyse it and answer the questions.
Growth during childhood and adolescence is related to the development of the
skeletal system. It is essential that calcium reaches the bones to ensure their
hardness and strength. In addition, children should engage in gamnes that expose
them to sunlight.

a) Which food items should be included in diet to ensure the availability of
calcium? (1)
b) Why is it necessary for children to engage in games that expose them to sunlight? (1)

E-906-BIO 3/6

Answer questions 12 to 17. 3 scores each
(6 x3=18)
12. The result of aperson's blood pressure test is shown in the picture.
Evaluate this person's blood pressure and answer the questions.

a.
What does each number shown on the screen indicate in
b. How is this person's blood pressure different from normal,relation to blood pressure? (1)
this condition? and what is the name of
(2)
13. A. Observe the illustration showing the structure of a
bone and answer the questions.

X

Blood vessels

a) Identify the part labelled as Xand write its characteristic feature.
b What are the components that provide hardness and strength to (1)
c) Write any two functions of osteoblast cells. bones? (1)
(1)
OR
B. Observe the given diagram and answer the questions.

X

a) Jdentifythe part labelled as 'X'and write its characteristic feature.
b) What is the function of 'X in the part shown in the picture. (1)
c) Xgrows comparatively slower than other tissues. Why? (1)
(1)
E-906-BIO
4/6