(a) ldentify specimens N,O and P by their common and botanical names (6 marks) specimen N; specimen O; specimen P; (b) state how each of specimens N and O i...

Assessment: WAEC SSCE - Agricultural Science - 2013 (Practical) Subject: Agricultural Science

Question 1 Report

(a) ldentify specimens N,O and P by their common and botanical names (6 marks)

specimen N;

Sweet elephant grass seed Taiwan elephant grass Pennisetum americanum  glowing pearl turf grass forage plant seeds|grass seed carpet|grass  worksseed - AliExpress

specimen O;

Centrosema molle - Tropical Forages

specimen P;

Image - Pueraria phaseoloides (Tropical Kudzu) | BioLib.cz

(b) state how each of specimens N and O is propagated (2 marks)

(c) Give four characteristics of specimen O (4 marks)

(d) State three uses of specimen N (3 marks)

Answer Details

(a) Identification of specimens N, O and P

SpecimenCommon nameBotanical name
NElephant grassPennisetum purpureum
OCentro (Centrosema)Centrosema pubescens
PTropical kudzuPueraria phaseoloides

(b) Method of propagation

  • Specimen N (Elephant grass): propagated vegetatively by stolons (also by stem cuttings).
  • Specimen O (Centro): propagated by seeds.

(c) Four characteristics of specimen O (Centro)

  1. It is a vigorous, aggressive, creeping and twining leguminous plant.
  2. It has trifoliate leaves attached to the stem by a pulvinus.
  3. It is a leafy perennial that is shade tolerant and drought resistant.
  4. It is highly nodulated, containing nitrogen-fixing bacteria in the root nodules, and is palatable and nutritious to livestock.

(d) Three uses of specimen N (Elephant grass)

  1. It is used as fodder for feeding livestock.
  2. It is used for roofing and thatching, and its dried stems for fencing.
  3. It is planted to check soil erosion and used as mulch to conserve soil moisture.

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