2017 WASSCE BIOLOGY PAPER 1 QUESTIONS AND ANSWERS.
2017 WASSCE BIOLOGY PAPER 1 QUESTIONS AND ANSWERS.
QUESTIONS
1. Which of the following groups of animal do not possess a nervous system?
A. Porifera
B. Cnidaria
C. Platyhelminthes
D. Nematoda
2. The structural similarities in Paramecium and Euglena are in the
A. shape of locomotory organs
B. blunt anterior and pointed posterior
C. presence of micro and mega nuclei in both
D. presence of anterior and posterior contractile vacuoles
3. Which of the following organisms cannot exist freely on its own?
A. Chlamydomonas
B. Amoeba
C. Paramecium
D. Plasmodium
The diagram below is an illustration of an Arthropod. Study it and answer question 4
4. The Arthropod in the diagram is not an insect because it
A. has a big head which is almost equal to the thorax
B. has eight legs and no wings
C. does not have visible eyes on its head
D. has head, thorax and abdomen
5. Which of the following cell organelles is the site for the production of ATP?
A. Lysosome
B. Nucleus
C. Mitochondrion
D. Ribosome
6. An example of osmosis in plants is the
A. movement of water through the xylem
B. loss of water vapour from the stomata
C. translocation of food through the phloem
D. absorption of water from the soil by the root
7. The organism that can carry out both autotrophic and heterotrophic modes of nutritions is
A. Chlamydomonas
B. Eudorina
C. Euglena
D. Spirogyra
The diagram below illustrates a part of the human skeleton. Study it and answer questions 8 to 10
8. The diagram represents the bones of the
A. upper arm
B. lower arm
C. upper leg
D. lower leg
9. Which of the labelled parts articulates with the head of the trochlea to form a hinge joint?
A. I
B. II
C. III
D. IV
10. The labelled part that provides surface for the attachment of the triceps is
A. I
B. II
C. III
D. IV11.
The diagram below illustrates the transverse section of a
A. dicotyledonous root
B. monocotyledonous root
C. dicotyledonous stem
D. monocotyledonous stem
12. Which of the following actions does not occur during exhalation in man?
A. Thoracic cavity decreases in volume
B. Diaphragm flattens
C. Ribs move down and in
D. Air pressure increases in the thoracic cavity
Use the diagram below to answer questions 13 to 15
13. Which of the following substances is found in the part labelled Il only?
A. Lipid
B. Protein
C. Salts
D. Water
14. The part which contains lowest concentration of urea is labelled
A. I
B. II
C. III
D. IV
15. Which of the following substances is greater in concentration in the part labelled IV when compared to that part labelled II?
A. Lipid
B. Glucose
C. Urea
D. Uric acid
16. Deamination of amino acids in the liver produces
A. Blood sugar
B. Glycogen
C. Bile
D. Urea
17. Which of the following glands also serves as an exocrine gland?
A. Ovary
B. Pancreas
C. Adrenal gland
D. Thyroid gland
18. Which of the following sequences is the correct route of the transmission of impulses along a reflex arc?
A. Receptor > sensory neurone > synapse > intermediate neurone > synapse motor neurone > effector
B. Receptor > motor neurone > synapse > intermediate neurone > synapse > sensory neurone > effector
C. Effector > intermediate neurone > synapse > motor neurone > synapse > sensory neurone > receptor
D. Effector > motor neurone > synapse > sensory neurone > synapse > intermediate neurone > receptor
19. When viewing an object close to the human eye, the
A. The eye lens becomes thin
B. The ciliary muscles relax
C. Suspensory ligaments become taut
D. Eye lens becomes flat
The diagram below is an illustration of the human sperm. Study it and answer questions 20 and 21
20. The part labelled I is
A. acrosome
B. nucleus
C. mitochondrion
D. tail
21. The function of the part labelled II is to
A. fuse with the ovum during fertilization
B. generate the energy for the sperm to swim to the fallopian tube
C. help the sperm to swim forward
D. dissolve the membrane of the egg during fertilization
22. Which of the following types of placentation is not common amongst syncarpous pistils?
A. marginal
B. axile
C. peal
D. free central
23. The complex energy-rich organic matter which living organisms need for life is
A. water
B. air
C. food
D. mineral salts
24. Which of the following processes are associated with photosynthesis?
I. Energy from sunlight is absorbed
II. Carbon dioxide is evolved
III. Oxygen is given off
IV. Glucose is synthesized
A. I and II only
B. I, II and IV only
C. I, III and IV only
D. I, II, III and IV
25. Which of the following functions is associated with calcium in plants? Formation of
A. cell wall
B. ribosomes
C. proteins
D. cell membrane
The diagrams below are illustrations of the dentition of an organism. Study them and answer questions 26 to 28
26. The dentition belongs to a
A. Rabbit
B. Cat
C. Frog
D. Man
27. The function of the teeth labelled X is
A. Biting and grasping
B. Chewing and grinding
C. Tearing and grasping
D. Chewing and tearing
28. The teeth which are absent in the young of the organism is
A. W
B. X
C. Y
D. Z
29. The number of individuals that the environment can support over a long period of time is its
A. growth rate
B. total capacity
C. population capacity
D. carrying capacity
30. A good site for secondary succession would be
A. a sand dune
B. a bare jock
C. a land that just had forest tire
D. a stretch of barren land
31. A population which exceeds its carrying capacity and then collapses is represented graphically by a
A. bell-shaped curve
B. linear curve
C. sigmoid curve
D. skewed curve
32. The natural dwelling place of an organism is called its
A. ecological niche
B. habitat
C. population
D. environment
33. Which of the following ecological factors will result in food shortage?
A. Drought
B. Low rate of reproduction
C. Emigration
D. Topography
34. Soil permeability refers to
A. how easily water passes through the soil
B. the proportion of air in the soil
C. the proportion of water the soil holds
D. how well water rises up the soil
35. Which of the following groups of organisms do not have members that can be called autotrophs?
A. Protists
B. Mosses
C. Chlorophytes
D. Fungi
36. Which of the following pyramids gives the most accurate picture of the relationships between the organisms at the various trophic levels in a food chain? A pyramid of
A. numbers
B. energy
C. biomass
D. size
37. Which of the following statements is not associated with pyramids of energy?
A. Efficiency of energy transfer between trophic levels can be studied
B. Comparisons of pyramids for different ecosystems can be made
C. More accurate comparisons of trophic levels
D. Representation of numbers of organisms at different trophic levels.
38. Which of the following materials is not easily biodegradable?
A. Polythene bag
B. Cotton bag
C. Hides and skin bag
D. Paper bag
39. Which of the following pairs of organisms is in a mutualistic relationship?
A. Hydra and sea anemone
B. Hermit crab and sea anemone
C. Dodder plant and cocoa plant
D. Mistletoe and kola nut
40. The establishment of game reserves and parks is a method of
A. conserving natural resources
B. cultivating game
C. controlling pollution
D. cultural awareness
41. Which of the following is not used in conserving water?
A. Afforestation
B. Damming
C. Deforestation
D. Reforestation
42. Which of the following resources cannot be renewed?
A. Air
B. Petroleum
C. Food crop
D. Soil
Use the diagram below to answer question 43
43. The type of variation illustrated above is
A. continuous variation
B. discontinuous variation
C. morphological variation
D. environmental variation
44. Which of the following characters is not a morphological variation?
A. shape of the nose
B. colour of skin
C. colour of hair
D. tongue rolling
45. An apple plant can produce sexually and asexually and it has 110 chromosomes in its leaf cells. How many chromosomes world be in each gamete and somatic cell?
A. 20 chromosomes in the gametes and 10 in the somatic cells
B. 40 chromosomes in the gametes and 20 in the somatic cells
C. 20 chromosomes in the gametes, and 40 in the somatic
D. 40 chromosomes in the gametes and 40 in the somatic cells
46. Assuming that A is the gene for normal skin colour end is dominant, while a is the gene for albinism and its recessive, what is the likely genotype of the couple which had 50% normal and 50% albino offspring?
A. AA, aa
B. Aa, aa
C. AA, Aa
D. Aa, Aa
47. Which of the following statements is true about mutation?
A. Phenotype is not involved
B. Genotype is not involved
C. Artificial induction is not possible
D. Genotype is involved
48. One of the structural adaptations of mammals for movement on land is the development of the
A. hollow bones
B. pentadactyl limb
C. fused thoracic bones
D. streamlined body
49. Which of the following traits is not characteristic of social insects?
A. All members are identical
B. There is division of labour
C. The members dwell in the same habitat
D. Some members protect the queen
50. The gradual cumulative, adaptive and heritable changes in an organism over a long period of time resulting in new species is called
A. adaptation
B. survival
C. organic evolution
D. interspecific competition
ANSWERS
1. A. Porifera
2. B. blunt anterior and pointed posterior
3. D. Plasmodium
4. D. has head, thorax and abdomen
5. C. Mitochondrion
6. D. absorption of water from the soil by the root
7. D. Spirogyra
8. B. lower arm
9. B. II
10. C. III
11. C. dicotyledonous stem
12. B. Diaphragm flattens
13. B. Protein
14. C. III
15. C. Urea
16. D. Urea
17. B. Pancreas
18. A. Receptor > sensory neurone > synapse > intermediate neurone > synapse motor neurone > effector
19. D. Eye lens becomes flat
20. A. acrosome
21. C. help the sperm to swim forward
22. A. marginal
23. C. food
24. C. I, III and IV only
25. A. cell wall
26. D. Man
27. C. Tearing and grasping
28. C. Y
29. C. population capacity
30. C. a land that just had forest tire
31. A. bell-shaped curve
32. B. habitat
33. A. Drought
34. A. how easily water passes through the soil
35. D. Fungi
36. D. size
37. B. Comparisons of pyramids for different ecosystems can be made
38. A. Polythene bag
39. B. Hermit crab and sea anemone
40. A. conserving natural resources
41. C. Deforestation
42. C. Food crop
43. B. discontinuous variation
44. D. tongue rolling
45. C. 20 chromosomes in the gametes, and 40 in the somatic
46. B. Aa, aa
47. B. Genotype is not involved
48. B. pentadactyl limb
49. A. All members are identical
50. A. adaptation
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