Lahore Board 9th Class (Biology) Subjective 2017 Past Paper English Medium [Group 2nd]
2. Write short answers to any FIVE (5) questions. (10)
(i) Write down the definition of Biology.
(ii) Differentiate between botany and zoology.
(iii) Write down the definition of biological method.
(iv) Differentiate between quantitative observations and
qualitative observations giving one example.
(v) What is meant by biodiversity?
(vi) Write down the importance of biodiversity.
(vii) Differentiate between magnification and resolution.
(viii) What is meant by micrograph?
3. Write short answers to any FIVE (5) questions. (10)
(i) How cytokinesis occur in a plant cell?
(ii) What changes occur in a cell during S-phase?
(iii) What is metastasis?
(iv) Differentiate between extra cellular and intra cellular enzymes.
(v) Describe the use pf enzyme in food industry.
(vi) How much energy is released from one mole of ATP?
(vii) What is lactic acid fermentation?
(viii) What is photolysis of water?
4. Write short answers to any FIVE (5) questions. (10)
(i) Define malnutrition.
(ii) What is meant by bolus?
(iii) Define organic fertilizer with an example.
(iv) Write two functions of large intestine.
(v) Write the function of neutrophils and basophils.
(vi) How pus is formed?
(vii) Why AB blood group individuals are called universal recipients?
(viii) Write the symptoms of dengue fever.
PART – II
Note: Attempt any TWO questions.
5. (a). Explain the population level and community level. (4) (b). Describe in detail the difference between prokaryotic and eukaryotic cells. (5)
6. (a). Describe models regarding mechanism of enzyme action. (4) (b). Give events of light reactions in photosynthesis. (5)
7. (a). Write the role of pharynx and oesophagus in digestion of human food. (4) (b). What is meant by transpiration? Explain factors affecting the rate of transpiration. (5)