This question was well attempted by the candidates. In 3(a), majority of the candidates were able to discuss the cultivation of cassava under soil requirements, spacing, disease and pest. However, most of them could not differentiate between natural and artificial pastures as required in 3 (b). Although, majority of the candidates could explain the term disease as used in crop production, most of them could not state Mendel’s law of independent assortment of genes as required in 3(c) and (d) respectively. Further to this, majority of the candidates were able to explain the term regeneration as a forest management practice and state the effects of deforestation as required in 3(e-f).
The expected answers include:
(b) Difference between natural and artificial pasture
Natural pasture refers to an area of land covered with forage grasses and legumes which are not planted by man
While/on the other hand/but/whereas
Artificial pasture refers to an area of land covered with forage grasses and legumes which are deliberately planted by man
(d) Mendel’s law of independent assortment of genes
Mendel’s law of independent assortment of genes states that each character behaves as a separate unit and is inherited independently of any other character.
OR
This law states that when two pure/true-bred organisms with two or more pairs of contrasting characters are crossed, the characters assort independently in the second filial generation. |