10th Science (Biology) Revision Test 3 Model Question Paper

Fine-tune your final exam preparation with our comprehensive 10th Science Biology Revision Test 3 Model Question Paper. The third revision block typically focuses on advanced, high-yield topics such as heredity, evolution, environment, and cellular reproduction. This model paper is specifically designed to test your mastery of complex biological processes, technical terminology, and essential diagram-labeling. Use this resource to test your recall under timed conditions and ensure your answers are sharp enough to claim every single mark.

SCIENCE (Bio-L:12-16)

Revision Test: 3 • Std: 10

Nov: 2019 Time: 1.30 Hrs. Marks: 50

I. Choose the correct answer. 6 × 1 = 6

1. Oxygen is produced at what point during photosynthesis ?
a) when ATP is converted to ADP b) when CO2 is fixed c) when H2O is splitted d) All of these

2. The animals which give birth to young ones are
a) Oviparous b) Viviparous c) Ovoviviparous d) All the above

3. Which is the sequence of correct blood flow
a) ventricle - atrium - vein - arteries b) atrium - ventricle - veins - arteries c) atrium - ventricle - arteries - vein d) ventricles - vein - atrium - arteries

4. Vomiting centre is located in
(a) medulla oblongata (b) stomach (c) cerebrum (d) hypothalamus

5. The hormone which has positive effect on apical dominance is:
a) Cytokinin b) Auxin c) Gibberellin d) Ethylene

6. Avena coleoptile test was conducted by
a) Darwin b) N. Smit c) Paal d) F.W. Went

II. Answer any 5 questions (Q No: 14 is Compulsory) 5 × 2 = 10

7.
i) _______ is a gaseous hormone involved in abscission and acceleration of fruit ripening.
ii) Decreased secretion of thyroid hormones in the children leads to _______.

8. True or false, If false write the correct statement
i). Gibberellins cause parthenocarpy in tomato.
ii) Pituitary gland is divided into four lobes.

9. Match the following

a) Symplastic pathway	Leaf
b). Transpiration	Plasmodesmata
c). Osmosis	Pressure in xylem
d) Root Pressure	Pressure gradient

10. What will you do to prevent leaf fall and fruit drop in plants? Support your answer with reason.

11. Name the parts of the hind brain.

12. When any dry plant material is kept in water, they swell up. Name and define the phenomenon involved in this change.

13. Why are the rings of cartilages found in trachea of rabbit?

14. Draw and label the structure of Mitochondria

III. Answer any 5 questions (Q No 16 is compulsory) 5 × 4 = 20

15. Differentiate the following:
a) Monocot root and Dicot root
b) Aerobic and Anaerobic respiration

16. Doctors use stethoscope to hear the sound of the heart. Why?

17. How does locomotion take place in leech?

18. Classify neurons based on its structure.

19. Enumerate the functions of blood.

20. What is transpiration? Give the importance of transpiration.

21. Illustrate the structure and functions of brain.

22.
(a) Name the gaseous plant hormone. Describe its three different actions in plants.
(b) Which hormone is known as stress hormone in plants? Why?

IV. Answer any two 2 × 7 = 14

23. With a neat labelled diagram explain the structure of a neuron.

(OR)

24. Describe the structure and working of the human heart.

25.
a). Our body contains a large number of cells 'L' which are the longest cells in the body. L has long and short branch called as 'M' and 'N' respectively. There is a gap 'O' between two 'L' cells, through which nerve impulse transfer by release of chemical substance 'P'.
(i) Name the cells L
(ii) What are M and N?
(iii) What is the gap O?
(iv) Name the chemical substance P
b). Minerals in the plants are not lost when the leaf falls.
c). What is cohesion?

(OR)

26.
a). List out the parasitic adaptations in leech.
b). Write the reaction for photosynthesis?