9th Class Biology Past Paper 2017
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) Describe the vegetative organs of plants with two examples.
(ii) Write the definition of biochemistry.
(iii) What is meant by bioinformatics?
(iv) Differentiate between deduction and theory.
(v) Define species with an example.
(vi) What is meant by endangered species? Write an example.
(vii) What is the difference between primary and secondary walls of the plant cell wall?
(viii) Draw a labelled diagram of mitochondrion.
Q3. Write short answers to any FIVE (5) questions: (5×2=10)
(i) Explain GO Phase.
(ii) Define mitosis.
(iii) What is crossing over?
(iv) Give uses of enzymes in the paper industry.
(v) Describe the induced fit model.
(vi) What is the Krebs cycle?
(vii) Explain alcoholic fermentation.
(viii) Define bioenergetics.
Q4. Write short answers to any FIVE (5) questions: (5×2=10)
(i) Differentiate between fat-soluble and water-soluble vitamins.
(ii) Write the name of two diseases caused by mineral deficiency.
(iii) What is peristalsis?
(iv) What is protein energy malnutrition?
(v) Write preventive measures for dengue fever.
(vi) What is transpirational pull?
(vii) Write the name of any two plasma proteins.
(viii) What is meant by blood group systems?
PART-II
Note: Attempt any TWO (2) questions.
Q.5
(a) Write down details of two professions related to biology.
(b) Write five differences between prokaryotes and eukaryotes.
Q.6
(a) Write a note on the specificity of enzymes.
(b) Describe the mechanism of respiration.
Q.7
(a) Describe the role of the liver in the human body. (9 Marks)
(b) Define the term transpiration and describe the factors affecting the rate of transpiration.