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Title
Biology O-Level Paper-1 Topical Unsolved (Article#201)
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Read & Write Publications
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Read & Write Publications
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Sharjeel Khan, Salman Buksh, Hayat, Shahab, Waqas, M. Awais, M. Ibrahim, Mehmood A.Siddiqui, Zulfiqar Ali
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Rashid Mehmood, Raja Naveed Mumtaz, Khalid Khurshid
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2018 Edition
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CONTENTS UNIT 1 1.1 1.2 1.3
----------------------------------------------------------------------------Plant and animal cells ------------------------------------------------------------------------------------------Specialised cells, tissues and organs ----------------------------------------------------------------------Multiple Topics --------------------------------------------------------------------------------------------------Answers Section ----------------------------------------------------------------------------------------
4 4 8 10 11
UNIT 2 2.1 2.2 2.3 2.4
-------------------------------------------------------Diffusion ----------------------------------------------------------------------------------------------------------Osmosis ----------------------------------------------------------------------------------------------------------Active transport --------------------------------------------------------------------------------------------------Multiple Topics ---------------------------------------------------------------------------------------------------Answers Section ----------------------------------------------------------------------------------------
12 12 13 17 20 28
UNIT 3 3.1 3.2 3.3
----------------------------------Enzyme action --------------------------------------------------------------------------------------------------Effects of temperature and pH ------------------------------------------------------------------------------Multiple Topics --------------------------------------------------------------------------------------------------Answers Section ----------------------------------------------------------------------------------------
29 29 34 37 39
UNIT 4 4.1 4.2 4.3 4.4
-----------------------------------------------------------------------------------------------Photosynthesis --------------------------------------------------------------------------------------------------Leaf structure ----------------------------------------------------------------------------------------------------Mineral nutrition -------------------------------------------------------------------------------------------------Multiple Topics --------------------------------------------------------------------------------------------------Answers Section ----------------------------------------------------------------------------------------
40 40 56 65 68 70
UNIT 5 5.1 5.2 5.3 5.4 5.5 5.6 5.7
----------------------------------------------------------------------------Nutrients ----------------------------------------------------------------------------------------------------------Diet -----------------------------------------------------------------------------------------------------------------World food supplies -------------------------------------------------------------------------------------------Human alimentary canal -------------------------------------------------------------------------------------Chemical digestion ---------------------------------------------------------------------------------------------Absorption and assimilation ---------------------------------------------------------------------------------Multiple Topics --------------------------------------------------------------------------------------------------Answers Section ----------------------------------------------------------------------------------------
71 71 79 80 81 88 92 96 101
UNIT 6 6.1 6.2 6.3
----------------------------------------------------------------------------Water and ion uptake -----------------------------------------------------------------------------------------Transpiration and translocation ----------------------------------------------------------------------------Multiple topics --------------------------------------------------------------------------------------------------Answers Section ----------------------------------------------------------------------------------------
102 102 110 122 128
UNIT 7 7.1 7.2
--------------------------------------------Circulatory system --------------------------------------------------------------------------------------------Multiple Topics --------------------------------------------------------------------------------------------------Answers Section ----------------------------------------------------------------------------------------
129 129 150 158
-----------------------------------------------------------------------------
159
UNIT 8
8.1 8.2 8.3 8.4
Aerobic respiration ---------------------------------------------------------------------------------------------Anaerobic respiration ------------------------------------------------------------------------------------------Human gas exchange -----------------------------------------------------------------------------------------Multiple Topics --------------------------------------------------------------------------------------------------Answers Section ----------------------------------------------------------------------------------------
159 160 164 178 184
UNIT 9 9.1 9.2 9.3
-------------------------------------------------------------------------------------------------- Structure and function of kidneys --------------------------------------------------------------------------Kidney dialysis --------------------------------------------------------------------------------------------------Multiple Topics --------------------------------------------------------------------------------------------------Answers Section ----------------------------------------------------------------------------------------
185 185 190 195 196
UNIT 10 10.1 10.2
-----------------------------------------------------------------Structure and function of the skin --------------------------------------------------------------------------Multiple Topics --------------------------------------------------------------------------------------------------Answers Section ----------------------------------------------------------------------------------------
197 197 201 207
UNIT 11 11.1 11.2 11.3 11.4 11.5
----------------------------------------------------------------------------Nervous system -------------------------------------------------------------------------------------------------Receptors --------------------------------------------------------------------------------------------------------Reflex action -----------------------------------------------------------------------------------------------------Hormones --------------------------------------------------------------------------------------------------------Multiple Topics --------------------------------------------------------------------------------------------------Answers Section ----------------------------------------------------------------------------------------
208 208 217 228 233 238 239
UNIT 12 12.1 12.2 12.3 12.4
----------------------------------------------------------------------------Bones -------------------------------------------------------------------------------------------------------------Joints ---------------------------------------------------------------------------------------------------------------Antagonistic muscles -------------------------------------------------------------------------------------------Multiple Topics --------------------------------------------------------------------------------------------------Answers Section ----------------------------------------------------------------------------------------
240 240 244 246 251 255
UNIT 13 13.1 13.2 13.3 13.4 13.5
----------------------------------------------------------------------------Antibiotics ---------------------------------------------------------------------------------------------------------Effects of heroin -------------------------------------------------------------------------------------------------Effects of alcohol ------------------------------------------------------------------------------------------------Effects of tobacco smoke -------------------------------------------------------------------------------------Multiple Topics --------------------------------------------------------------------------------------------------Answers Section ----------------------------------------------------------------------------------------
256 256 258 259 261 266 268
UNIT 14 14.1 14.2 14.3 14.4
----------------------------------------------------------------------------Microorganisms --------------------------------------------------------------------------------------------------Food biotechnology ---------------------------------------------------------------------------------------------Industrial biotechnology ---------------------------------------------------------------------------------------Multiple Topics ---------------------------------------------------------------------------------------------------Answers Section ----------------------------------------------------------------------------------------
269 269 274 278 283 284
UNIT 15 15.1 15.2 15.3 15.4
----------------------------------------------------------------------------Energy flow -------------------------------------------------------------------------------------------------------Food chains and food webs ----------------------------------------------------------------------------------Carbon cycle -----------------------------------------------------------------------------------------------------Nitrogen cycle ----------------------------------------------------------------------------------------------------
285 285 289 301 306
15.5 15.6 15.7 15.8 15.9
Parasitism --------------------------------------------------------------------------------------------------------Effects of humans on the ecosystem ----------------------------------------------------------------------Pollution ----------------------------------------------------------------------------------------------------------Conservation ----------------------------------------------------------------------------------------------------Multiple Topics -------------------------------------------------------------------------------------------------Answers Section ----------------------------------------------------------------------------------------
312 317 321 325 326 330
UNIT 16 16.1 16.2 16.3 16.4 16.5
----------------------------------------------------------------------------Asexual reproduction -------------------------------------------------------------------------------------------Sexual reproduction in plants -------------------------------------------------------------------------------Sexual reproduction in humans -----------------------------------------------------------------------------Sexually transmitted diseases -------------------------------------------------------------------------------Multiple Topics --------------------------------------------------------------------------------------------------Answers Section ----------------------------------------------------------------------------------------
331 331 333 352 367 370 373
----------------------------------------------------------------------------Variation -----------------------------------------------------------------------------------------------------------Chromosomes and DNA -------------------------------------------------------------------------------------Monohybrid inheritance ---------------------------------------------------------------------------------------Selection ----------------------------------------------------------------------------------------------------------Genetic engineering -------------------------------------------------------------------------------------------Multiple Topics --------------------------------------------------------------------------------------------------Answers Section ---------------------------------------------------------------------------------------Past Papers ----------------------------------------------------------------------------May/June 2018 Paper-12 ----------------------------------------------------------------------------Answers Section ----------------------------------------------------------------------------------------
374 374 377 379 393 395 397 399 400 400 413
UNIT 17 17.1 17.2 17.3 17.4 17.5 17.6
Biology O-Level Paper-1 Classified
1.1 Plant and animal cells
4
Read & Write Publications
Unit 1: Cell structure and organisation 1.1 Plant and animal cells 1. O/N 16/P12/Q1 The diagram shows a plant cell.
Which two structures are not found in animal cells? A 1 and 2 B 2 and 3 C
3 and 4
D
4 and 5
2. M/J 16/P11/Q1 Which two structures are found in all plant epidermal cells? A cell wall and chloroplasts C chloroplasts and starch grains B cell wall and nucleus D nucleus and starch grains 3. M/J 15/P12/Q1 The diagram shows a plant cell.
Which structure identifies this as a plant cell rather than an animal cell? A cell membrane B cell wall C cytoplasm
D
nucleus
Biology O-Level Paper-1 Classified
1.1 Plant and animal cells
5
Read & Write Publications 4. O/N 15/P12/Q1 Which diagram shows the positions of the chloroplasts and the nucleus in a cell?
A
C
B
D
5. M/J 14/P12/Q1 What are found in plant cells but not in animal cells? 1 cell membrane 2 nucleus 3 cell wall 4 chloroplast A 1 and 2 B 1 and 4 C
2 and 3
6. M/J 12/P12/Q1 Some structures found in cells are listed. 1 cell wall 2 cell membrane 3 chloroplast 4 cytoplasm 5 nucleus Which structures are found in both animal cells and plant cells? A 1 2 4 C 2 B 1 2 3 D 2 7. M/J 12/P11/Q1 What is found in both animal and plant cells? A cellulose cell wall B chloroplast
C D
D
3 4
3 and 4
5 5
starch grain vacuole or vacuoles
8. O/N 11/P12/Q1, O/N 11/P11/Q1 A human cheek cell and a spongy mesophyll cell from a leaf are examined under a microscope. Which structures are seen in both cells? A cell membrane, nucleus and cytoplasm C cytoplasm, cell wall and cell membrane B cell wall, cell membrane and nucleus D nucleus, cytoplasm and cell wall
Biology O-Level Paper-1 Classified
1.1 Plant and animal cells
6
Read & Write Publications 9. M/J 11/P12/Q1, M/J 11/P11/Q1 The diagram shows a plant cell.
Which features are not found in animal cells? A 1 and 2 B 1 and 3
C
2 and 4
10. O/N 09/P1/Q2 The diagram represents a cell as seen under the electron microscope.
What type of cell is this?
11. M/J 09/P1/Q1 The diagram shows a plant cell. Which structure controls the passage of substances into and out of the cell?
D
2 and 5
Biology O-Level Paper-1 Classified
7
1.1 Plant and animal cells
Read & Write Publications 12. O/N 07/P1/Q1 When a red stain is added to a culture containing both living and dead cells, only the dead cells take up the stain. Which structure prevents the stain entering the living cells? A cell membrane B cell wall C cytoplasm D vacuole 13. O/N 05/P1/Q1 The diagram shows a plant cell. Which labelled structure controls the passage of substances into and out of the cell?
14. M/J 03/P1/Q1 The diagram shows a cell.
Which numbers show the parts named?
15. O/N 02/P11/Q1 Which structures are found in animal cells and in plant cells? A cell membrane and chloroplasts C cell wall and chloroplasts B cell membrane and nucleus D cell wall and nucleus
Biology O-Level Paper-1 Classified
8
1.2 Specialised cells, tissues and organs
Read & Write Publications
1.2 Specialised cells, tissues and organs 16. M/J 16/P12/Q3 The diagrams show a cylindrical net packed with rubber balloons full of air. The structure is used by a teacher to explain wilting.
What is represented by the parts of the structure shown?
17. O/N 14/P12/Q1 The diagram shows three cellular structures.
Which statements about these cells are correct?
18.
M/J 14/P11/Q1, M/J 02/P11/Q1 Which of the following have both cytoplasm and cell walls? A liver cells B red blood cells C root hair cells
D
xylem vessels
Biology O-Level Paper-1 Classified
1.2 Specialised cells, tissues and organs
9
Read & Write Publications 19. M/J 13/P12/Q1, M/J 13P11/Q1 Which structures are present in a root hair cell?
20. M/J 10/P12/Q11, M/J 10/P11/Q1 The photomicrograph shows onion epidermis.
Which term describes this onion epidermis? A cell B organ
C
organ system
D
tissue
D
1, 2 and 3
21. M/J 07/P1/Q1 The diagram shows three different cells, not drawn to the same scale.
Which are animal cells? A 1 and 2 only
B
1 and 3 only
C
2 and 3 only
22. O/N 06/P1/Q1 The table shows some characteristics of four types of cell. Which cell could be a root hair cell?
Biology O-Level Paper-1 Classified
10
Read & Write Publications
1.3 Multiple Topics 23. O/N 16/P11/Q1 Which row correctly shows the function of a cell structure and its location?
1.3 Multiple Topics
11
Read & Write Publications
Answers Section
1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23.
A B B C D D D A B A B A B B B B C C B D C B A