Kanyakumari District Schools
Education Department
Type of Announcement : Model Question Paper for X - Science
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Question Paper X - Science
Subject Name : Science Time : 2.30 Hrs Marks : 75
Section – A
Note :
i) Choose the right Answer
ii) Answer all questions

1. A fruit develops from a single flower with multicarpellary, apocarpous,superior ovary is (Aggregate fruit, composite fruit, simple fruit, multiple fruit)
2. Which of the following constitute a food chain { (Grass, Wheat and Mango), (Grass, goat and Human),(Goat, cow and elephant),(Grass, fish and goat)}
3. Somatic genetheraphy does ( affect the sperm, affect the egg, affect the progency, affect body cell)
4. Pick out the bacterial disease( Meningities, Rabies, Tetanus, Small pox)
5. Mammal’s main excretory product is (Ammonia, Uric acid, Urea, Sodium)
6. When sunlight passes through the window of your house, the dust particles scatter the light making the path of the light visible. This phenomenon is called as (Brownian motion , tyndall effect, Raman Effect , uniform motion)
7. Number of groups in modern periodic table is --------------- (7,17,18,8)
8. An amalgam is an alloy of metal with ( carbon, mercury, hydrogen, gold)
9. An object is placed at 25 c.m. from a convex lens whose focal length is 10c.m. The image distance is ……… (50 c.m, 16.66 c.m, 6.6 c.m., 10 c.m.)
10. Four cells each of emf “E” are joined in parallel to form a battery. The equivalent emf of the battery will be ………………………(4E, E, E/4, E=0)
11. Electric power can be transmitted over long distance without much loss of energy is an important advantage of ……………..(AC, DC, Both AC & DC, None)

Section B
Note:
i) Short Answers
ii) Answer any twenty questions

12. Do you agree with the statement given below. If not, give the correct statements.
a. Variation may be defined as the affinities in the characteristics among the individual the species
b. Evolution is a sudden development from the complex species to simple form Do you agree with the above statements?
13. Assertion (A): The secretions of pituitary gland controls all other endocrineglands.
Reason (R) : It is known as the conductor of endocrine orchestra
a) A is correct and R is not giving correct reasoning.
b) A is correct and R is wrong
c) A is wrong and R is correct
d) A is relevant and R is giving correct reasoning.
14. You suspect that your friend is suffering from common cold. What are the questions you will ask your friend to confirm the disease.
15. The polar bears have thick skin coat and wooly fur, the ballen whales have ballen plates. Give reasons
16. The tearing teeth of carnivorous animals ……………. The tusks of an elephant are modified teeth of …………….
17. What will happen if all the grass is removed from the grass land eco system?

Section – C
Note:
i) Answer any four questions by choosing one question from each group
ii) Each question carries five marks
iii) Draw diagram wherever necessary
Group-A
18. a. State any two applications of Bio-sensor in medicines. Somatic genetherapy does not effect the sperm or egg. Give reason.
b. What are the types of gene therapy?
19. a. The transfer of disease causing germ from an infected person to a normal healthy person through air by sneezing, coughing and talking is possible. Is there any other agent that transmits the infectious germs. List the agents or carriers, and the various diseases caused by them.
b. Administering vaccine is to prevent the spread of diseases. Brief the role of MMR and DT vaccine.
Group-B
20. Calyx, Corolla are the parts of a flower.
a. Give the reproductive parts of a flower
b. State the process involved in sexual reproduction.
c. Fruit is a ripened ovary classify the following fruits.
1. Cotton / Lady’s finger 2. Paddy 3. Castor

Note :
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