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SPICER HIGHER SECONDARY SCHOOL (ICSE/ISC)
FIRST TERM EXAMINATION 2020 - 21
SUBJECT: BIOLOGY
CLASS: X A-H
NAME: __________________ MARKS: 40
ID NO: _________ TIME: 1 Hr
SECTION-I (20 MARKS)
(Answer all questions from this section)
Question 1.
(a) Name the following: 5 Marks
i. The splitting of water molecule in to H+ and OH- in the presence of light
energy.
ii. Tiny pores through which guttation occurs.
iii. The phenomenon by which living or dead plant cells absorb water by surface
attraction.
iv. A heredity disease in which blood does not clot.
v. The scientific name of a pea plant.
(b) Mention whether the following statements are True or False. If false, rewrite the
correct statement by changing the last word. 5 Marks
i. Chromosomes are arranged at the equatorial plate in prophase.
ii. The oxygen released during photosynthesis is from the carbon dioxide.
iii. The upward movement of water and minerals from the roots to leaves
through xylem is called ascent of sap.
iv. Morphological expression of an individual for any character is called
genotype.
v. The waxy layer present on the upper surface of the leaf is called lenticel.
(c) Study the diagram given below and complete the questions: 5 Marks
i. What is the full form of DNA?
ii. List any four differences between mitosis and meiosis. (2)
iii. Draw the diagram of anaphase in animal cell with four chromosomes. (2)
(d) Define the following: 5 Marks
i. Root pressure
ii. Plasmolysis
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iii. Photophosphorylation
iv. Law of segregation
v. Submetacentric chromosome
SECTION-II (20 MARKS)
(Answer any four questions from this section)
Question 2. Study the diagram given below and complete the following questions:
5 Marks
i. What is the aim of the experiment given above?
ii. Define the process of Photosynthesis.
iii. Mention any two significances of photosynthesis to mankind.
iv. Give the full form of NADP.
v. Represent the physiological process mentioned in (ii) above in the form of a
balanced chemical equation.
Question 3. Study the diagram given below and complete the following questions:
5 Marks
i. Name the apparatus. What is the use of the apparatus?
ii. Define the process transpiration.
iii. List any two significance of transpiration.
iv. List any two limitations of this apparatus.
v. What is bleeding in plants?
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Question 4. Answer the following questions: 5 Marks
i. Why did Mendel select pea plant for his experiments? (two points)
ii. List any two differences of Mitosis in plant and animal cell.
iii. Define active transport
iv. List any two adaptations in plants to reduce transpiration.
v. What is the function of chlorophyll?
Question 5. Study the diagram given below and complete the following questions:
5 Marks
i. Name the process studied here.
ii. Define the above named process.
iii. What would you observe in the experimental set-up after an hour or so?
iv. Mention any two advantages of this process to the plant.
v. Name any other substance that can be used instead of parchment paper in
the above experiment.
Question 6. Draw and label the following diagrams: 5 Marks
i. Structure of the chloroplast. (3)
ii. Fully grown root hair cell. (2)
Question 7. Complete the following questions:
5 Marks
i. Define the term Genetics.
ii. What are antitranspirants? Give two examples.
iii. List any two significance of Meiosis.
iv. What is turgor pressure?
v. Differentiate between autosomes and sex chromosomes.
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Name: Mr. Gopi Marakani
WhatsApp No: 9284863522
E – Mail Id: gopimarakani@gmail.com
