(a) Outline six benefits derived from growing ornamental plants, [6 marks]
(b) State four symptoms of cassava mosaic disease. [4 marks]
(c) Explain the following terms as used in forest management. (i) selective exploitation (ii) regeneration (iii) taungya farming [6 marks]
(b) State four symptoms of cassava mosaic disease. [4 marks]
(c) Explain the following terms as used in forest management. (i) selective exploitation (ii) regeneration (iii) taungya farming [6 marks]
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Correct Answer: Option n
Explanation:
(a) Benefits derived from growing ornamental plants
- Source of employment/income to florists •
-Flowers are used for the expression of love and as gifts on special occasions
-Shade loving ornamentals can be used for decoration in porches, verandahs and halls
-Densely branched ornamental shrubs can be used for. fencing
- Used for visual screening or concealing views to provide privacy
- Pruning and clipping from hedges can be used as compost materials or mulch
- Some ornamental plants have medicinal value and are used in herbal preparation
- Some ornamental trees have edible fruits for human consumption
- Fixing of atmospheric nitrogen into the soil by bacteria in the root nodules of leguminous ornamental plants
-Decay of the leaves of ornamental plants improves soil fertility
- Purifies the environment
- Provides shade in car parks and public places
- Helps to absorb and reflect sound waves to reduce noise from hooting horns from vehicles
-Some ornamental plants are used for teaching and learning purposes
- Helps to reduce light blurrs on major roads to prevent accidents in the night
- Serves as windbreaks
- The beauty and fragrance of some ornamental plants give some people pleasure and satisfaction
- Ornamental plants can be used to direct the movement of people through the planting of avenues trees in curves, hedges along path in school compounds etc.
- Beautification of environment
- Flowers and leaves are used for floral design such as wreaths. bouquets, garlands
- Some flowers are used in the preparation of dyes
- Prunings from ornamented plants may be used in feeding animals
- Source of revenue to the government through taxation
- Well established ornamental gardens serve as tourist attraction.
(b) Symptoms of Cassava mosaic disease
- Mottling of leaves/leaf curl
- Distortion of leaves and stems
-Vein clearing
-Stunted growth
-Development of yellowish pale areas alternating with green patches on the leaves / mosaic pattern on the leaves.
(c) of forest management terms
(i) Selective exploitation
-This is the legal felling of trees based on criteria such as maturity and species
- it helps to protect the soil from erosion and at the same time encourages continuous supply of timber.
(ii) Regeneration
- This is the process of forest re-growth after it has been exploited
- It can occur either by re-growing from old stumps or deliberate planting of new forest seedlings in a deforested area. ((May be natural or artificial)
(iii) Taungya farming: This is a management practice which involves the planting of food crops and some forest trees at the same time until the canopy of the trees close up.
(a) Benefits derived from growing ornamental plants
- Source of employment/income to florists •
-Flowers are used for the expression of love and as gifts on special occasions
-Shade loving ornamentals can be used for decoration in porches, verandahs and halls
-Densely branched ornamental shrubs can be used for. fencing
- Used for visual screening or concealing views to provide privacy
- Pruning and clipping from hedges can be used as compost materials or mulch
- Some ornamental plants have medicinal value and are used in herbal preparation
- Some ornamental trees have edible fruits for human consumption
- Fixing of atmospheric nitrogen into the soil by bacteria in the root nodules of leguminous ornamental plants
-Decay of the leaves of ornamental plants improves soil fertility
- Purifies the environment
- Provides shade in car parks and public places
- Helps to absorb and reflect sound waves to reduce noise from hooting horns from vehicles
-Some ornamental plants are used for teaching and learning purposes
- Helps to reduce light blurrs on major roads to prevent accidents in the night
- Serves as windbreaks
- The beauty and fragrance of some ornamental plants give some people pleasure and satisfaction
- Ornamental plants can be used to direct the movement of people through the planting of avenues trees in curves, hedges along path in school compounds etc.
- Beautification of environment
- Flowers and leaves are used for floral design such as wreaths. bouquets, garlands
- Some flowers are used in the preparation of dyes
- Prunings from ornamented plants may be used in feeding animals
- Source of revenue to the government through taxation
- Well established ornamental gardens serve as tourist attraction.
(b) Symptoms of Cassava mosaic disease
- Mottling of leaves/leaf curl
- Distortion of leaves and stems
-Vein clearing
-Stunted growth
-Development of yellowish pale areas alternating with green patches on the leaves / mosaic pattern on the leaves.
(c) of forest management terms
(i) Selective exploitation
-This is the legal felling of trees based on criteria such as maturity and species
- it helps to protect the soil from erosion and at the same time encourages continuous supply of timber.
(ii) Regeneration
- This is the process of forest re-growth after it has been exploited
- It can occur either by re-growing from old stumps or deliberate planting of new forest seedlings in a deforested area. ((May be natural or artificial)
(iii) Taungya farming: This is a management practice which involves the planting of food crops and some forest trees at the same time until the canopy of the trees close up.