2024 WAEC Biology Practical (Spacimen) Questions:
SPECIMENS PROVIDED
- Specimen A: Pride of Barbados flower
- Specimen B: Pod of Pride of Barbados
- Specimen C: Cock
- Specimen H: Tomato fruit
- Specimen J: Gloriosa superba leaf & stem with tendrils
- Specimen K: Bryophyllum leaf
- Specimen L: Onion bulb
2024 WAEC Biology Practical Answers:
Question (i)
Specimen A is a flower. Remove all the stamens and three petals from Specimen A, leaving the special petal. Make a drawing 10 - 12 cm long of the remaining parts of Specimen A and label fully. [11 marks]
Question (ii)
What type of ovary is presented in Specimen A? [1 mark]
Question (iii)
Give one reason for your answer in 1 (a)(ii) above. [1 mark]
Question (iv)
Describe the petals and sepals of Specimen A. [2 marks]
Question (v)
What is the function of the special petal? [1 mark]
Question (vi)
State three features of Specimen A which have led to the success of flowering plants. [3 marks]
Question (b)(i)
What type of fruit is Specimen B? [1 mark]
Question (b)(ii)
Give two other examples of the fruit type. [2 marks]
Question (b)(iii)
State the mode of dispersal of Specimen B. [1 mark]
Question (b)(iv)
State two biological importance of the class of fruit to which Specimen B belongs. [2 marks]
Observation/Candidate Feedback:
Several candidates failed to follow instructions correctly, resulting in a loss of marks. Some candidates neglected to remove the stamens and petals as instructed, while others removed the special petal, affecting their diagrams. Additionally, many candidates struggled to identify the ovary of the flower as superior and provide the reason for its placement.
Although most candidates could describe the sepals and petals of the flower, many failed to state the function of the special petal accurately. Some candidates incorrectly generalized the function of petals, stating their role in attracting insects rather than specifying the function of the special petal in leading insects to the nectar.
In Question 1 (b), many candidates performed poorly by failing to identify the fruit type of Specimen B, provide other examples of the fruit type, state the mode of dispersal, and articulate the biological importance of the class. Some candidates confused modes of dispersal with agents of dispersal, resulting in lost marks.
Expected answers include:
- Type of fruit (Specimen B): Legume/Pod
- Examples of legumes: Beans, Peas, Caesalpinia, Crotolaria, Delonix sp., Mucuna
- Mode of dispersal: Explosive mechanism
- Biological importance of legumes:
- Source of food/protein
- Fixes nitrogen in the root/soil
- Serves as cover crop/prevents erosion
- Source of feed for livestock
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