(a) of land tenure system It refers to the system of land ownership/ acquisition by individuals or groups for temporary or permanent use plant.
(b) Definition of weed A weed is any plant found growing in a place where it is not wanted/desired. It is an unwanted plant.
(c) Discussion of groundnut rosette disease
(i) Causal organism
-Virus
(ii) Mode of transmission
- By insect vector called aphid
(iii) Symptoms
- Stunted growth
- Leaves turn yellow with mosaic of mottling
- Leaves become closely packed and curled
(iv) Control
-Early planting
- Plant resistant verities
- Uproot and burn infected plants
- Use insecticide to kill aphids
- Practise close spacing
(d) Characteristics of factors of production
(i) Land
- Immobile/fixed in supply
- Subject to the law of diminishing returns
- Its reward is rent It is a fixed asset
- Its value is based on its location its unit is acres/hectares It is a free gift of nature
- It is heterogeneous in nature It appreciates/depreciates over time.
(ii) Capital
- It takes different forms, e.g. machinery and agro-chemicals
- It can depreciate/appreciate over time - It could be fixed or working capital
- The reward of capital is interest - It is man-made and is accumulated over time.
- It can be used to acquire other factors, e.g. land and labour.