9th Class Biology Past Paper 2018
Note: Biology 1st Time Paper of 9th Class.
Group-I (Subjective) 48 Marks
Part– I
Q.2 Write short answers to any FIVE (5) questions: (10)
(i) Differentiate between micromolecules and macromolecules with examples.
(ii) Define biotechnology.
(iii) Differentiate between theory and law.
(iv) Describe deduction.
(v) Write a simple classification of humans.
(vi) Write the importance of biodiversity.
(vii) What is endocytosis? Describe its types.
(viii) Differentiate between magnification and resolution.
Q.3 Write short answers to any FIVE (5) questions: (10 Marks)
(i) What is alternation of generations?
(ii) Differentiate between chromatin and chromosomes.
(iii) Define cytokinesis.
(iv) Write down the names of two enzymes.
(v) What is activation energy?
(vi) Define cellular respiration.
(vii) When and what did Karl Lohmann discover?
(viii) Write down the names of two compounds produced during the respiration process.
Q.4 Write short answers to any FIVE (5) questions: (10 Marks)
(i) Write the function of HCl and pepsin in digestion.
(ii) What are the effects of deficiency of iodine on the thyroid gland?
(iii) What is night blindness?
(iv) Differentiate between assimilation and absorption.
(v) How can transpiration be a harmful process?
(vi) How is plasma separated from blood?
(vii) Briefly describe the function of pericardial fluid.
(viii) How does the Aedes mosquito spread dengue fever?
PART-II
Note: Attempt any TWO (2) questions.
Q.5
(a) Which professions can be adopted in biological studies? Explain any five. (5 Marks)
(b) Explain three types of plastids. (4 Marks)
Q.6
(a) Describe the characteristics of enzymes (any five). (5 Marks)
(b) Describe different steps of light reactions. Also, draw the Z-scheme. (4 Marks)
Q.7
(a) Explain the importance of water and dietary fibers in food. (5 Marks)
(b) Compare the structure and function of arteries and veins. (4 Marks)