PLK LAWS FOUNDATION COLLEGE Total Mark:
First Term Examination
(2021/2022)
Secondary: 3 Date: January 5, 2022
Subject: Biology Time: 10:05-11:05 (60 min)
Full Mark: 60 Class: 3
Paper: Question Paper Name: ( )
Instructions: 1. There are TWO sections in this examination paper: Multiple-choice questions (15 marks) and
Structured questions (35 marks).
2. When told to open this book, check that all the questions are there. Look for the words ‘END OF
PAPER’ after the last question.
3. Answer ALL the questions.
4. Write ALL answers in the spaces provided in the Answer Paper.
5. The diagrams in this paper are NOT necessarily drawn to scale.
6. All experimental data provided in this paper have not been proved scientifically.
1T/2021-2022/S3 Biology/Question Paper 1
Section A Multiple-choice questions (15 marks)
You should mark ONE answer only for each question. Two or more answers score NO MARKS. All questions carry
equal marks. No marks will be deducted for wrong answers. Put a “✓” in the corresponding boxes provided in the
Answer paper.
1. Which of the following cells possess chloroplasts? (2003/II/3)
(1) a guard cell
(2) a leaf mesophyll cell
(3) an onion epidermal cell
A. (1) and (2) only
B. (1) and (3) only
C. (2) and (3) only
D. (1), (2) and (3)
2. Which of the following descriptions of the different parts of a plant cell are correct? (1993/II/7)
(1) The nucleus contains genetic materials
(2) The vacuole contains water and dissolved mineral salts
(3) The cell wall is selectively permeable to dissolved mineral salts
A. (1) and (2) only
B. (1) and (3) only
C. (2) and (3) only
D. (1),(2) and (3)
3. Which of the following statements about cellulose in plant cells is correct? (2002/II/29)
A. It stores energy for the plant cells.
B. It can be stained blue-black with iodine solution.
C. It helps to maintain the shape of the plant cells.
D. It regulates the movement of water in and out of the plant cells.
4. Which of the following correctly compares an epidermal cell and a mesophyll cell of a leaf? (2003/II/3)
Epidermal cell Mesophyll cell
A. without nucleus with nucleus
B. without cell wall with cell wall
C. without chloroplasts with chloroplast
D. without large vacuole with large vacuole
1T/2021-2022/S3 Biology/Question Paper 2
5. Which of the following microphotography best represent an animal cell be immersed in hypotonic solution?
A.
B.
A.
C.
A.
A.
6.
Which
of
the
following cells possess chloroplasts? (1991/II/6)
(1) a guard cell
(2) a leaf mesophyll cell
(3) an onion epidermal cell
A. (1) and (2) only
B. (1) and (3) only
C. (2) and (3) only
D. (1), (2) and (3)
7. Which of the following are factors affecting the rate of diffusion across membranes?
(1) Temperature
(2) Concentration gradient
(3) Oxygen amount
(4) Surface area
A. (1) and (2) only
B. (2) and (3) only
C. (1) and (4) only
D. (1), (2) and (4) only
1T/2021-2022/S3 Biology/Question Paper 3
8. The diagrams below show three types of human cells: (1997/II/6)
All three types of cells
A. can move
B. have a nucleus
C. have a cell membrane
D. can undergo cell division
9. Which of the following statements about osmosis are correct?
(1) There is a net movement of water molecules.
(2) A fully permeable membrane must be involved.
(3) It is a passive process.
A. (1) and (3) only
B. (1) and (2) only
C. (2) and (3) only
D. (1), (2) and (3)
10. Sir Robert Hooke is the first scientist who used the light microscope to observe cells. His study
led to
A. the discovery of virus
B. the formulation of the cell theory
C. the discovery of bacteria as a disease-causing agent
D. the discovery of the fine structure of cell organelles
1T/2021-2022/S3 Biology/Question Paper 4
11. A student first focused on the section under the microscope and saw the section as shown in I.
In order to see the section in II, the following steps are required. Arrange them in the correct
sequence. (2004/II/13)
(1) Turn the nosepiece for an objective of higher magnification
(2) Turn the coarse adjustment knob / fine adjustment knob
(3) Adjust the position of the section on the stage
A. (2), (1), (3)
B. (2), (3), (1)
C. (3), (1), (2)
D. (3), (2), (1)
12. A student examines the epidermis of a leaf under the microscope. In order to observe more cells
within the field of view, he should (2001/II/2)
A. increase the illumination of the slide.
B. stain the epidermis with iodine solution.
C. use an objective with a lower magnification.
D. reduce the distance between the slide and the objective.
1T/2021-2022/S3 Biology/Question Paper 5
13. Which of the following description regarding demonstration using dialysis tubing are correct?
(1) Dialysis tubing is differentially permeable
(2) There must be a net movement of water molecules
(3) The water level in the capillary tube must raise.
A. (1) only
B. (1) and (3) only
C. (2) and (3) only
D. (1) and (2) only
14. When the word 'box' is viewed under the microscope, which of the following can be seen?
(1995/II/6)
A. box
B. pox
C. xop
D. xoq
15. A student examines the epidermis of a leaf under the microscope. In order to observe more cells
within the field of view, he should (2001/II/2)
A. increase the illumination of the slide.
B. stain the epidermis with iodine solution.
C. use an objective with a lower magnification.
D. reduce the distance between the slide and the objective.
1T/2021-2022/S3 Biology/Question Paper 6
Section B Structured questions (45 marks)
1. The diagram above shows four types of cells:
(a) Which of the above are plant cells? State TWO plant cell features that are common to the
cells you have listed. (3 marks)
(b) For each of the cell A and B
(i) suggest ONE function, and
(ii) state ONE structural feature, as shown in the diagram, which is essential for this
function. (4 marks)
(c) Describe the changes in cells C and D after they have been placed in distilled water for
thirty minutes. Explain your answer. (6 marks)
Total: 13 marks
2. Photomicrograph 1 show some cells of a human blood smear.
Photomicrograph 2 shows some cells of an onion epidermis. (1991/I/1a)
1T/2021-2022/S3 Biology/Question Paper 7
(a) With reference to the photomicrographs only, state TWO structural differences
between cell A and cell C. (2 marks)
(b) (1) The central part of cell B looks lighter in color. Explain this with reference to
its shape. (2 marks)
(2) How is the shape related to its function? (2 marks)
(c) Cell A is found in large numbers in wounds. What is the function of cell A there?
(1 mark)
(d) Describe and explain what would happen if cell B were put into a concentrated
sugar solution for 20 minutes. (2 marks)
(e) Make a labelled drawing of cell C if the onion epidermis were put into a
hypertonic solution for 20 minutes. (3 marks)
Total: 11 marks
3. In order to study the conditions for osmosis, a student prepared two set-ups as shown in
the diagrams below. The skin of each potato was removed and a cavity was made for
holding the sucrose solution. (1996/I/4a)
1T/2021-2022/S3 Biology/Question Paper 8
(a) Explain why the level of sucrose solution of set-up A rose after 12 hours. (3 marks)
(b) What can you conclude from the results of the two set-ups? (2 marks)
(c) Referring to set-up A, draw a labelled diagram to show the possible appearance of a
complete potato cell which is in contact with
(i) the sucrose solution,
(ii) the distilled water. (4 marks)
(d) At the end of the experiment, sucrose was found in the distilled water in set-up B.
Explain why this occurred. (2 marks)
Total:11 marks
4. Two similar pieces of dialysis tubing were set up as shown in the following diagrams.
The concentrations of the sucrose solution and the glucose solution were the same.
(1998/I/1b)
1T/2021-2022/S3 Biology/Question Paper 9
Sucrose solution Glucose solution
The height of the solution column in each capillary tube was measured and recorded in the
table below:
(a) Present the results in the form of a graph. (4 marks)
(b) Explain the change in the solution level in the capillary tube of set-up A during 0-20
minutes. (3 marks)
(c) Explain the difference in the rate of change of solution levels between set-ups A and B
during 0-20 minutes. (3 marks)
Total: 10 marks
END OF PAPER
1T/2021-2022/S3 Biology/Question Paper 10
