WAEC GCE Biology Paper 3 Practical 2017/2018 (Questions and Answers Expo)

WAEC GCE Biology Paper 3 Practical 2017/2018 (Questions and Answers Expo)

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This is to notify the general public that the WAEC GCE Biology Practical Specimen & Syllabus 2017 Available Here free of charge. As a matter of fact, the 2017 waec gce Biology past questions & Answers Now Available here for those serious students who are prepared to read to pass.

WAEC GCE Biology Practical Questions 2017 | Check Answers Here ...

In this post, I will give you past questions and answer that is usually asked every year on WAEC May/June and WAEC GCE Nov/Dec so that you can use it as a study material. Do not use this as an expo runz because you will not pass the exam.

LIST OF SPECIMENS


  1. Specimen A     -           twig of mango plant.
  2. Specimen B     -           twig of Ixora plant.
  3. Specimen C     -           leaf of Hibiscus plant.
  4. Specimen D     -           hibiscus flower.
  5. Specimen E     -           green leafy vegetable.
  6. Specimen F     -           a piece of freshly cut beef.
  7. Specimen G    -           worker bee (wet preserved).
  8. Specimen H     -           soldier termite (wet preserved).
  9. Specimen K    -           adult cockroach (wet preserved).
  10.  Specimen L     -           nymph of cockroach (wet preserved).
  11. Specimen M    -           young toad (freshly preserved).
  12. Specimen N     -           scale of bony fish.
  13. Specimen P     -           freshly preserved mammalian skin preferably of goat or ram with hair/fur measuring at least 4 cm by 4 cm placed in a petri dish.
  14. Specimen S     -          a small amount of garden soil in a petri dish.
  15. Specimen T     -           orange/lemon/lime/citrus fruit
  16. Specimen V    -           tomato fruit.
  17. Specimen W   -           cassava tuber.
  18. Specimen Xi   -            stem of young cassava plant measuring at least 10cm in length.
  19. Specimen Xii   -           stem of young cassava plant measuring at least 10cm in length as in Xi.


QUESTION  1

Study specimens Aand Bcarefully and use them to answer questions 1(a) to 1(e).
(a) Classify specimen B into its Division and Class.                    [2 marks]
(b) (i)  State the types of leaf arrangements in specimens A and B.  [2 marks]        
(ii) Name the leaf shape of specimens A and B.                          [2 marks]
(c) (i) State the type of leaf margin in specimen A.                    [1 mark ]
     (ii) State the types of venation found in the leaves of specimens A and B. [2 marks ]
(d) (i)   List three observable similarities found in specimens A and B.            [3 marks ]
(ii) In a tabular form, state four observable differences between specimens A and B. [4 marks]
(e) Make a drawing 8 cm – 10cm long of the leaf of specimen A and  label fully. [9 marks]

Observation

Most candidates could not classify specimen B/twig of Ixora plant into its Division and Class and many that tried could not spell correctly. Most candidates could not answer questions (b) (i) and (ii); (c) (i) and (ii) correctly.

Many candidates could state observable similarities in specimens A and B quite well.
Only a few of the candidates’ drawings were good in question 1(e). Many candidates drew without putting the title of the diagram, the magnification and labelled correctly.


The expected answers are:

•  (a) (i) Division
Angiospermatophyta/Angiospermophyta/Magniliophyta                              
(ii) Class
Dicotyledoneae/Magniliopsida

(b) (i) Types of leaf arrangements
Specimen A     -           Alternate/Spiral
Specimen B     -           Decussate/Opposite
  (ii) Leaf shape
Specimen A     -           Lanceolate/Sword-like
Specimen B     -           Oval/Ovate

(c) (i) Type of leaf margin of specimen A
Entire/Smooth/Wavy
(ii) Types of venation found in Specimens A and B
Specimen A     -           Net/reticulate
Specimen B     -           Net/reticulate
WAEC GCE Biology Paper 3 Practical 2017/2018 (Questions and Answers Expo)
Labels
Apex/tip; midrib/rachis/main vein; vein; margin/edge; leaf blade/lamina; petiole/leaf stalk.

(d) (i) Observable similarities between Specimens A and B


  1. Leaves have leaf stalk/petiole/petiolate;
  2. Leaf stalk/petiole swollen at the base;
  3. Leaves contain chlorophyll/are green in colour;
  4. Leaves have entire/smooth margins;
  5. Leaves have net/reticulate venation;
  6. Leaves have pointed apex;
  7. Leaves have prominent midrib;
  8. Both leaves are simple.


(ii) Observable differences between Specimens A and B


  1. Specimen A (mango)
  2. Petiole/leaf stalk is long
  3. Leaves have elongated apex/accuminate/acuminate
  4. Leaves have a narrow lamina/leaf blade
  5. Spiral/alternate leaf arrangement
  6. Leaves are bigger


Specimen B (Ixora)


  1. Petiole/leaf stalk is short;
  2. Leaves have short apex/acute;
  3. Leaves have a broad lamina/leaf blade;
  4. Decussate/ opposite leaf arrangement;
  5. Leaves are smaller;


Penalty: minus (-) 1 mark for no tabulation.
(e) Drawing/Diagram of leaf of specimen A
TL- Title

Quality

  1. NL- Neat Labels
  2. CL- Clarity of Lines
  3. Sz- Size (8-10cm)
  4. Mg- Magnification (x0.2 – x0.5)/ (x1/5 – x½)


Details

  1. TA= Tapering Apex
  2. NV=Net venation shown
  3. MT= Midrib tapering to Apex
  4. LS= Lanceolate Shape

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