SS2 FIRST TERM BIOLOGY PRACTICAL (MARKING GUIDE)
Marking Guide for Biology Practical SS2
1.(a) (i) Identify specimens A, C, D and F with reasons.
Specimen A: Orange fruit.
Reason: It is a berry fruit.
Specimen C: Tridax procumbens
Reason: It is an annual weed.
Specimen D: Elephant grass.
Reason: It has parallel venation.
Specimen F: Cassava stem.
Reason: It has nodes.
(1 × 8 = 8 marks)
1.(a) (ii) Cut specimen A transversely, make a diagram (8-10cm) long and label.
Diagram of a transverse section of specimen A.
TL: (1 mark)
NL: (1 mark)
CL: (1 mark)
SZ: (1 mark)
Mg: (×½ – ×2): (1 mark)
Details
Cut surface (CS) with double lines: (1 mark)
Placenta shown (PS): (1 mark)
Seed shown (SS): (1 mark)
Labels (LB): Epicarp, Mesocarp, Endocarp (2 marks)
(10 marks)
1.(b) (i) two observable similarities of Specimens C and D.
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