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Biology 1 - Objective Test Questions

The scientist who introduced binomial nomenclature in the classification of organisms was
1. Charles Darwin
2. Carolus Linnaeus
3. John Ray
4. Louis Pasteur
Which of the following statements is true about arthropods?
1. Prothorax bears only legs
2. Mesothorax bears only legs
3. Metathorax bears only wings
4. Prothorax bears only wings
What level of organization is Spirogyra?
1. Organ system
2. Organ
3. Cell
4. Tissue
The streaming movement of cytoplasm within Paramecium is known as
1. transpiration.
2. digestion.
3. cyclosis.
4. Osmosis.
Which of the following cell organelles is found only in plant cells?
1. Mitochondria
2. Ribosomes
3. Lysosomes
4. Plastids
Active transport differs from diffusion in that active transport
1. is a very fast process
2. allows the movement of substances against concentration gradient.
3. takes place in both light and dark reactions of photosynthesis.
4. occurs in both plant and animal tissues.
The type of response demonstrated is
1. phototropism.
2. geotropism.
3. hydrotropism.
4. thigmotropism.
The conclusion drawn from the experiment is that
1. shoots of plants are negatively thigmotropic.
2. shoots of plants are negatively geotropic.
3. leave of plants are positively phototropic.
4. roots of plants are positively hydrotropic.
The odontoid process is found on the
1. axis vertebra.
2. atlas vertebra.
3. thoracic vertebra.
4. sacral vertebra.
A seedling was made to stand in a solution of red ink for three hours and a transverse section of the stem was examined under the microscope. The process being investigated was
1. the importance of micro elements to plants.
2. ascent of water through the xylem.
3. diffusion of coloured substances.
4. distribution of food in plants.
Which of the following structures would carry out respiration
1. germinating cowpea.
2. decolorized leaf.
3. dry leaf.
4. boiled cowpea.
Which of the following substances is not an excretory product of animals?
1. Carbon dioxide
2. Urea
3. Sweat
4. Oxygen
An example of homeostasis in living organisms is
1. cooling effect resulting from evaporation of water from the body surface.
2. root hairs of a plant growing towards a source of light.
3. changing of the body colour of chameleon to match the colour of the foliage on which it is resting.
4. the release of phosphorus into the phloem of a plant growing in a phosphorus-deficient soil.
Ultrafiltration in the kidney takes place in the
1. renal vein.
2. medulla.
3. loop of Henle.
4. Bowman's capsule.
The thyroid gland is located at the base of the
1. midbrain.
2. kidney.
3. neck.
4. liver.
Which of the following statements about the response of neurones to stimulus is correct?
1. Neurones respond to stimulus of any strength
2. Neurones respond to all stimuli applied in rapid succession
3. Neurone respond more rapidly during the absolute refractory period
4. Intensity of stimulus must reach a threshold value before the neurones can be excited.
Which of the following practices may lead to infection of the eye? Use of
1. contact lenses.
2. Convex Lenses.
3. biconcave lenses.
4. concave lenses.
The structures for gaseous exchange in breathing roots are
1. stomata.
2. lenticels.
3. cuticle.
4. mitochondria.
The adult insect in this life cycle is
1. housefly.
2. butterfly.
3. cockroach.
4. mosquito.
The larva is also known as
1. nymph.
2. maggot.
3. caterpillar.
4. chrysalis.
The source of energy required by plants during food production is
1. photosynthesis.
2. chlorophyll.
3. sunlight.
4. microorganisms.
One major difference between plant and animal nutrition is the ability plants to synthesize
1. food for plants and animals.
2. water for plants.
3. water for animals.
4. food for plants only.
By what process is starch converted into maltose?
1. Hydrolysis
2. Condensation
3. Translocation
4. Photosynthesis
The ascent of water in tall trees is mainly due to
1. adhesive forces.
2. transpiration pull.
3. root Pressure.
4. cohesive forces.
The duodenum of a person was surgically removed. Which of the following food substances would have their digestion affected?
1. Starch and protein only
2. Starch and lipids
3. Starch, peptones and maltose
4. Starch, protein and lipids
Which of the following dental formulae represents the dentition in rabbits?
2. Option b
3. Option c
4. Option d
The property of soil demonstrated is
1. particle size.
2. capillarity.
3. colour.
4. texture.
Which of the following statements would be a correct observation at the end of the experiment? Water moves
1. highest in sandy soil.
2. lowest in loamy soil.
3. to the same level in all soil types.
4. highest in clayey soil.
The most important factor(s) that influence(s) the ecological niche of an organism is/are the
1. water, light and predator-prey relationship.
2. food and water availability.
3. physical environment.
4. competition for food and space.
The diagram below is an illustration of organisms in an air-tight aquarium. The most important factor needed by the organisms is
1. light energy.
2. low humidity.
3. oxygen.
4. nitrate.
Question 31
1. Option a
2. Option b
3. Option c
4. Option d
Question 32
1. Option a
2. Option b
3. Option c
4. Option d
Question 33
1. Option a
2. Option b
3. Option c
4. Option d
Question 34
1. Option a
2. Option b
3. Option c
4. Option d
Question 35
1. Option a
2. Option b
3. Option c
4. Option d
Question 36
1. Option a
2. Option b
3. Option c
4. Option d
Question 37
1. Option a
2. Option b
3. Option c
4. Option d
Question 38
1. Option a
2. Option b
3. Option c
4. Option d
Question 39
1. Option a
2. Option b
3. Option c
4. Option d
Question 40
1. Option a
2. Option b
3. Option c
4. Option d
Question 41
1. Option a
2. Option b
3. Option c
4. Option d
Question 42
1. Option a
2. Option b
3. Option c
4. Option d
Question 43
1. Option a
2. Option b
3. Option c
4. Option d
Question 44
1. Option a
2. Option b
3. Option c
4. Option d
Question 45
1. Option a
2. Option b
3. Option c
4. Option d
Question 46
1. Option a
2. Option b
3. Option c
4. Option d
Question 47
1. Option a
2. Option b
3. Option c
4. Option d
Question 48
1. Option a
2. Option b
3. Option c
4. Option d
Question 49
1. Option a
2. Option b
3. Option c
4. Option d
Question 50
1. Option a
2. Option b
3. Option c
4. Option d

Biology 2 - Theory Questions

Section A - For All Candidates

Question 1
1. Sub-question a
  1. Sub-question i
  2. Sub-question ii
  3. Sub-question iii
  4. Sub-question iv
  5. Sub-question v
2. Sub-question b
  1. Sub-question i
  2. Sub-question ii
  3. Sub-question iii
  4. Sub-question iv
  5. Sub-question v
3. Sub-question c
  1. Sub-question i
  2. Sub-question ii
  3. Sub-question iii
  4. Sub-question iv
  5. Sub-question v
4. Sub-question d
  1. Sub-question i
  2. Sub-question ii
  3. Sub-question iii
  4. Sub-question iv
  5. Sub-question v
5. Sub-question e
  1. Sub-question i
  2. Sub-question ii
  3. Sub-question iii
  4. Sub-question iv
  5. Sub-question v
6. Sub-question f
  1. Sub-question i
  2. Sub-question ii
  3. Sub-question iii
  4. Sub-question iv
  5. Sub-question v
Question 2
1. Sub-question a
  1. Sub-question i
  2. Sub-question ii
  3. Sub-question iii
  4. Sub-question iv
  5. Sub-question v
2. Sub-question b
  1. Sub-question i
  2. Sub-question ii
  3. Sub-question iii
  4. Sub-question iv
  5. Sub-question v
3. Sub-question c
  1. Sub-question i
  2. Sub-question ii
  3. Sub-question iii
  4. Sub-question iv
  5. Sub-question v
4. Sub-question d
  1. Sub-question i
  2. Sub-question ii
  3. Sub-question iii
  4. Sub-question iv
  5. Sub-question v
5. Sub-question e
  1. Sub-question i
  2. Sub-question ii
  3. Sub-question iii
  4. Sub-question iv
  5. Sub-question v
6. Sub-question f
  1. Sub-question i
  2. Sub-question ii
  3. Sub-question iii
  4. Sub-question iv
  5. Sub-question v
Question 3
1. Sub-question a
  1. Sub-question i
  2. Sub-question ii
  3. Sub-question iii
  4. Sub-question iv
  5. Sub-question v
2. Sub-question b
  1. Sub-question i
  2. Sub-question ii
  3. Sub-question iii
  4. Sub-question iv
  5. Sub-question v
3. Sub-question c
  1. Sub-question i
  2. Sub-question ii
  3. Sub-question iii
  4. Sub-question iv
  5. Sub-question v
4. Sub-question d
  1. Sub-question i
  2. Sub-question ii
  3. Sub-question iii
  4. Sub-question iv
  5. Sub-question v
5. Sub-question e
  1. Sub-question i
  2. Sub-question ii
  3. Sub-question iii
  4. Sub-question iv
  5. Sub-question v
6. Sub-question f
  1. Sub-question i
  2. Sub-question ii
  3. Sub-question iii
  4. Sub-question iv
  5. Sub-question v
Question 4
1. Sub-question a
  1. Sub-question i
  2. Sub-question ii
  3. Sub-question iii
  4. Sub-question iv
  5. Sub-question v
2. Sub-question b
  1. Sub-question i
  2. Sub-question ii
  3. Sub-question iii
  4. Sub-question iv
  5. Sub-question v
3. Sub-question c
  1. Sub-question i
  2. Sub-question ii
  3. Sub-question iii
  4. Sub-question iv
  5. Sub-question v
4. Sub-question d
  1. Sub-question i
  2. Sub-question ii
  3. Sub-question iii
  4. Sub-question iv
  5. Sub-question v
5. Sub-question e
  1. Sub-question i
  2. Sub-question ii
  3. Sub-question iii
  4. Sub-question iv
  5. Sub-question v
6. Sub-question f
  1. Sub-question i
  2. Sub-question ii
  3. Sub-question iii
  4. Sub-question iv
  5. Sub-question v

Section C - For Candidates In Nigeria Only

Question 6
1. Sub-question a
  1. Sub-question i
  2. Sub-question ii
  3. Sub-question iii
  4. Sub-question iv
  5. Sub-question v
2. Sub-question b
  1. Sub-question i
  2. Sub-question ii
  3. Sub-question iii
  4. Sub-question iv
  5. Sub-question v
3. Sub-question c
  1. Sub-question i
  2. Sub-question ii
  3. Sub-question iii
  4. Sub-question iv
  5. Sub-question v
4. Sub-question d
  1. Sub-question i
  2. Sub-question ii
  3. Sub-question iii
  4. Sub-question iv
  5. Sub-question v
5. Sub-question e
  1. Sub-question i
  2. Sub-question ii
  3. Sub-question iii
  4. Sub-question iv
  5. Sub-question v
6. Sub-question f
  1. Sub-question i
  2. Sub-question ii
  3. Sub-question iii
  4. Sub-question iv
  5. Sub-question v

Biology 3 - Practical Questions

Section A - For All Candidates

Question 1
1. Sub-question a
  1. Sub-question i
  2. Sub-question ii
  3. Sub-question iii
  4. Sub-question iv
  5. Sub-question v
2. Sub-question b
  1. Sub-question i
  2. Sub-question ii
  3. Sub-question iii
  4. Sub-question iv
  5. Sub-question v
3. Sub-question c
  1. Sub-question i
  2. Sub-question ii
  3. Sub-question iii
  4. Sub-question iv
  5. Sub-question v
4. Sub-question d
  1. Sub-question i
  2. Sub-question ii
  3. Sub-question iii
  4. Sub-question iv
  5. Sub-question v
5. Sub-question e
  1. Sub-question i
  2. Sub-question ii
  3. Sub-question iii
  4. Sub-question iv
  5. Sub-question v
6. Sub-question f
  1. Sub-question i
  2. Sub-question ii
  3. Sub-question iii
  4. Sub-question iv
  5. Sub-question v
Question 2
1. Sub-question a
  1. Sub-question i
  2. Sub-question ii
  3. Sub-question iii
  4. Sub-question iv
  5. Sub-question v
2. Sub-question b
  1. Sub-question i
  2. Sub-question ii
  3. Sub-question iii
  4. Sub-question iv
  5. Sub-question v
3. Sub-question c
  1. Sub-question i
  2. Sub-question ii
  3. Sub-question iii
  4. Sub-question iv
  5. Sub-question v
4. Sub-question d
  1. Sub-question i
  2. Sub-question ii
  3. Sub-question iii
  4. Sub-question iv
  5. Sub-question v
5. Sub-question e
  1. Sub-question i
  2. Sub-question ii
  3. Sub-question iii
  4. Sub-question iv
  5. Sub-question v
6. Sub-question f
  1. Sub-question i
  2. Sub-question ii
  3. Sub-question iii
  4. Sub-question iv
  5. Sub-question v

Section C - For Candidates in Nigeria Only

Question 4
1. Sub-question a
  1. Sub-question i
  2. Sub-question ii
  3. Sub-question iii
  4. Sub-question iv
  5. Sub-question v
2. Sub-question b
  1. Sub-question i
  2. Sub-question ii
  3. Sub-question iii
  4. Sub-question iv
  5. Sub-question v
3. Sub-question c
  1. Sub-question i
  2. Sub-question ii
  3. Sub-question iii
  4. Sub-question iv
  5. Sub-question v
4. Sub-question d
  1. Sub-question i
  2. Sub-question ii
  3. Sub-question iii
  4. Sub-question iv
  5. Sub-question v
5. Sub-question e
  1. Sub-question i
  2. Sub-question ii
  3. Sub-question iii
  4. Sub-question iv
  5. Sub-question v
6. Sub-question f
  1. Sub-question i
  2. Sub-question ii
  3. Sub-question iii
  4. Sub-question iv
  5. Sub-question v

@@ Line 3: / Line 3: @@
 === Biology 1 - Objective Test Questions===
 <ol>
-     <li>Question 1
+     <li>The scientist who introduced binomial nomenclature in the classification of organisms was
          <ol type="a">
-             <li>Option a</li>
+             <li>Charles Darwin</li>
-             <li>Option b</li>
+             <li>Carolus Linnaeus</li>
-             <li>Option c</li>
+             <li>John Ray</li>
-             <li>Option d</li>
+             <li>Louis Pasteur</li>
          </ol>
      </li>
-     <li>Question 2
+     <li>Which of the following statements is true about arthropods?
          <ol type="a">
-             <li>Option a</li>
+             <li>Prothorax bears only legs</li>
-             <li>Option b</li>
+             <li>Mesothorax bears only legs</li>
-             <li>Option c</li>
+             <li>Metathorax bears only wings</li>
-             <li>Option d</li>
+             <li>Prothorax bears only wings</li>
          </ol>
      </li>
-     <li>Question 3
+     <li>What level of organization is Spirogyra?
          <ol type="a">
-             <li>Option a</li>
+             <li>Organ system</li>
-             <li>Option b</li>
+             <li>Organ</li>
-             <li>Option c</li>
+             <li>Cell</li>
-             <li>Option d</li>
+             <li>Tissue</li>
          </ol>
      </li>
-     <li>Question 4
+     <li>The streaming movement of cytoplasm within Paramecium is known as
          <ol type="a">
-             <li>Option a</li>
+             <li>transpiration.</li>
-             <li>Option b</li>
+             <li>digestion.</li>
-             <li>Option c</li>
+             <li>cyclosis.</li>
-             <li>Option d</li>
+             <li>Osmosis.</li>
          </ol>
      </li>
-     <li>Question 5
+     <li>Which of the following cell organelles is found only in plant cells?
          <ol type="a">
-             <li>Option a</li>
+             <li>Mitochondria</li>
-             <li>Option b</li>
+             <li>Ribosomes</li>
-             <li>Option c</li>
+             <li>Lysosomes</li>
-             <li>Option d</li>
+             <li>Plastids</li>
          </ol>
      </li>
-     <li>Question 6
+     <li>Active transport differs from diffusion in that active transport
          <ol type="a">
-             <li>Option a</li>
+             <li>is a very fast process</li>
-             <li>Option b</li>
+             <li>allows the movement of substances against concentration gradient.</li>
-             <li>Option c</li>
+             <li>takes place in both light and dark reactions of photosynthesis.</li>
-             <li>Option d</li>
+             <li>occurs in both plant and animal tissues.</li>
          </ol>
      </li>
-     <li>Question 7
+     <li>The type of response demonstrated is
          <ol type="a">
-             <li>Option a</li>
+             <li>phototropism.</li>
-             <li>Option b</li>
+             <li>geotropism.</li>
-             <li>Option c</li>
+             <li>hydrotropism.</li>
-             <li>Option d</li>
+             <li>thigmotropism.</li>
          </ol>
      </li>
-     <li>Question 8
+     <li>The conclusion drawn from the experiment is that
          <ol type="a">
-             <li>Option a</li>
+             <li>shoots of plants are negatively thigmotropic.</li>
-             <li>Option b</li>
+             <li>shoots of plants are negatively geotropic.</li>
-             <li>Option c</li>
+             <li>leave of plants are positively phototropic.</li>
-             <li>Option d</li>
+             <li>roots of plants are positively hydrotropic.</li>
          </ol>
      </li>
-     <li>Question 9
+     <li>The odontoid process is found on the
          <ol type="a">
-             <li>Option a</li>
+             <li>axis vertebra. </li>
-             <li>Option b</li>
+             <li>atlas vertebra.</li>
-             <li>Option c</li>
+             <li>thoracic vertebra.</li>
-             <li>Option d</li>
+             <li>sacral vertebra.</li>
          </ol>
      </li>
-     <li>Question 10
+     <li>A seedling was made to stand in a solution of red ink for three hours and a transverse section of the stem was examined under the microscope. The process being investigated was
          <ol type="a">
-             <li>Option a</li>
+             <li>the importance of micro elements to plants.</li>
-             <li>Option b</li>
+             <li>ascent of water through the xylem.</li>
-             <li>Option c</li>
+             <li>diffusion of coloured substances.</li>
-             <li>Option d</li>
+             <li>distribution of food in plants.</li>
          </ol>
      </li>
-     <li>Question 11
+     <li>Which of the following structures would carry out respiration
          <ol type="a">
-             <li>Option a</li>
+             <li>germinating cowpea.</li>
-             <li>Option b</li>
+             <li>decolorized leaf.</li>
-             <li>Option c</li>
+             <li>dry leaf.</li>
-             <li>Option d</li>
+             <li>boiled cowpea.</li>
          </ol>
      </li>
-     <li>Question 12
+     <li>Which of the following substances is not an excretory product of animals?
          <ol type="a">
-             <li>Option a</li>
+             <li>Carbon dioxide</li>
-             <li>Option b</li>
+             <li>Urea</li>
-             <li>Option c</li>
+             <li>Sweat</li>
-             <li>Option d</li>
+             <li>Oxygen</li>
          </ol>
      </li>
-     <li>Question 13
+     <li>An example of homeostasis in living organisms is
          <ol type="a">
-             <li>Option a</li>
+             <li>cooling effect resulting from evaporation of water from the body surface.</li>
-             <li>Option b</li>
+             <li>root hairs of a plant growing towards a source of light.</li>
-             <li>Option c</li>
+             <li>changing of the body colour of chameleon to match the colour of the foliage on which it is resting.</li>
-             <li>Option d</li>
+             <li>the release of phosphorus into the phloem of a plant growing in a phosphorus-deficient soil.</li>
          </ol>
      </li>
-     <li>Question 14
+     <li>Ultrafiltration in the kidney takes place in the
          <ol type="a">
-             <li>Option a</li>
+             <li>renal vein.</li>
-             <li>Option b</li>
+             <li>medulla.</li>
-             <li>Option c</li>
+             <li>loop of Henle.</li>
-             <li>Option d</li>
+             <li>Bowman's capsule.</li>
          </ol>
      </li>
-     <li>Question 15
+     <li>The thyroid gland is located at the base of the
          <ol type="a">
-             <li>Option a</li>
+             <li>midbrain. </li>
-             <li>Option b</li>
+             <li>kidney.</li>
-             <li>Option c</li>
+             <li>neck. </li>
-             <li>Option d</li>
+             <li>liver.</li>
          </ol>
      </li>
-     <li>Question 16
+     <li>Which of the following statements about the response of neurones to stimulus is correct?
          <ol type="a">
-             <li>Option a</li>
+             <li>Neurones respond to stimulus of any strength</li>
-             <li>Option b</li>
+             <li>Neurones respond to all stimuli applied in rapid succession</li>
-             <li>Option c</li>
+             <li>Neurone respond more rapidly during the absolute refractory period</li>
-             <li>Option d</li>
+             <li>Intensity of stimulus must reach a threshold value before the neurones can be excited.</li>
          </ol>
      </li>
-     <li>Question 17
+     <li>Which of the following practices may lead to infection of the eye? Use of
          <ol type="a">
-             <li>Option a</li>
+             <li>contact lenses.</li>
-             <li>Option b</li>
+             <li>Convex Lenses.</li>
-             <li>Option c</li>
+             <li>biconcave lenses.</li>
-             <li>Option d</li>
+             <li>concave lenses.</li>
          </ol>
      </li>
-     <li>Question 18
+     <li>The structures for gaseous exchange in breathing roots are
          <ol type="a">
-             <li>Option a</li>
+             <li>stomata.</li>
-             <li>Option b</li>
+             <li>lenticels.</li>
-             <li>Option c</li>
+             <li>cuticle.</li>
-             <li>Option d</li>
+             <li>mitochondria.</li>
          </ol>
      </li>
-     <li>Question 19
+     <li>The adult insect in this life cycle is
          <ol type="a">
-             <li>Option a</li>
+             <li>housefly.</li>
-             <li>Option b</li>
+             <li>butterfly.</li>
-             <li>Option c</li>
+             <li>cockroach.</li>
-             <li>Option d</li>
+             <li>mosquito.</li>
          </ol>
      </li>
-     <li>Question 20
+     <li>The larva is also known as
          <ol type="a">
-             <li>Option a</li>
+             <li>nymph.</li>
-             <li>Option b</li>
+             <li>maggot. </li>
-             <li>Option c</li>
+             <li>caterpillar.</li>
-             <li>Option d</li>
+             <li>chrysalis.</li>
          </ol>
      </li>
-     <li>Question 21
+     <li>The source of energy required by plants during food production is
          <ol type="a">
-             <li>Option a</li>
+             <li>photosynthesis.</li>
-             <li>Option b</li>
+             <li>chlorophyll.</li>
-             <li>Option c</li>
+             <li>sunlight.</li>
-             <li>Option d</li>
+             <li>microorganisms.</li>
          </ol>
      </li>
-     <li>Question 22
+     <li>One major difference between plant and animal nutrition is the ability plants to synthesize
          <ol type="a">
-             <li>Option a</li>
+             <li>food for plants and animals.</li>
-             <li>Option b</li>
+             <li>water for plants.</li>
-             <li>Option c</li>
+             <li>water for animals.</li>
-             <li>Option d</li>
+             <li>food for plants only. </li>
          </ol>
      </li>
-     <li>Question 23
+     <li>By what process is starch converted into maltose?
          <ol type="a">
-             <li>Option a</li>
+             <li>Hydrolysis</li>
-             <li>Option b</li>
+             <li>Condensation</li>
-             <li>Option c</li>
+             <li>Translocation</li>
-             <li>Option d</li>
+             <li>Photosynthesis</li>
          </ol>
      </li>
-     <li>Question 24
+     <li>The ascent of water in tall trees is '''mainly''' due to
          <ol type="a">
-             <li>Option a</li>
+             <li>adhesive forces. </li>
-             <li>Option b</li>
+             <li>transpiration pull.</li>
-             <li>Option c</li>
+             <li>root Pressure.</li>
-             <li>Option d</li>
+             <li>cohesive forces. </li>
          </ol>
      </li>
-     <li>Question 25
+     <li>The duodenum of a person was surgically removed. Which of the following food substances would have their digestion affected?
          <ol type="a">
-             <li>Option a</li>
+             <li>Starch and protein only</li>
-             <li>Option b</li>
+             <li>Starch and lipids </li>
-             <li>Option c</li>
+             <li>Starch, peptones and maltose</li>
-             <li>Option d</li>
+             <li>Starch, protein and lipids </li>
          </ol>
      </li>
-     <li>Question 26
+     <li>Which of the following dental formulae represents the dentition in rabbits?
          <ol type="a">
-             <li>Option a</li>
+             <li></li>
              <li>Option b</li>
              <li>Option c</li>
@@ Line 211: / Line 211: @@
          </ol>
      </li>
-     <li>Question 27
+     <li>The property of soil demonstrated is
          <ol type="a">
-             <li>Option a</li>
+             <li>particle size. </li>
-             <li>Option b</li>
+             <li>capillarity.  </li>
-             <li>Option c</li>
+             <li>colour.</li>
-             <li>Option d</li>
+             <li>texture.</li>
          </ol>
      </li>
-     <li>Question 28
+     <li>Which of the following statements would be a correct observation at the end of the experiment? Water moves
          <ol type="a">
-             <li>Option a</li>
+             <li>highest in sandy soil.</li>
-             <li>Option b</li>
+             <li>lowest in loamy soil.</li>
-             <li>Option c</li>
+             <li>to the same level in all soil types.</li>
-             <li>Option d</li>
+             <li>highest in clayey soil.  </li>
          </ol>
      </li>
-     <li>Question 29
+     <li>The most important factor(s) that influence(s) the ecological niche of an organism is/are the
          <ol type="a">
-             <li>Option a</li>
+             <li>water, light and predator-prey relationship.</li>
-             <li>Option b</li>
+             <li>food and water availability. </li>
-             <li>Option c</li>
+             <li>physical environment.</li>
-             <li>Option d</li>
+             <li>competition for food and space.</li>
          </ol>
      </li>
-     <li>Question 30
+     <li>The diagram below is an illustration of organisms in an air-tight aquarium. The '''most''' important factor needed by the organisms is
          <ol type="a">
-             <li>Option a</li>
+             <li>light energy. </li>
-             <li>Option b</li>
+             <li>low humidity. </li>
-             <li>Option c</li>
+             <li>oxygen. </li>
-             <li>Option d</li>
+             <li>nitrate.</li>
          </ol>
      </li>