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Waec Gce 2022 Second Series (2nd Series) Agriculture Science Answers Today 17th Of November Answes

Posted by on November 17, 2022 0

(3ai) Irrigation is defined as the artificial or manmade application of water to soil or land for farming purposes. OR Irrigation is the artificial application of water to the soil to supplement insufficient rainfall.

(3aii)

1c

i. It cases environmental pollution.
ii. There is high cost of machines.
iii. It encourages soil erosion.
iv. Genuine spare parts are not readily available.
v. It displaces farm labourers or leads to unemployment.
vi. Maintenance cost of machine is high.
vii. It destroys soil structure.
viii. It require skilled labour.

3bi
Reforestation is the natural or intentional restocking of existing forests and woodlands that have been depleted, usually through deforestation, but also after clearcutting…

3bii
Afforestation is the conversion of abandoned and degraded agricultural lands into forests, while reforestation is the replantation of trees in deforested land.

3biii
Selective exploitation: Is the cutting of matured trees leaving the young ones to continue growing to avoid destructive effects of both wind and water erosion.

(3c)
1. Eastern Redbud.
2. Saucer Magnolia.
3. White Dogwood.
4. Sweetbay Magnolia.
5. Yoshino Cherry.
6. Prairifire Flowering

(3ai) Irrigation is defined as the artificial or manmade application of water to soil or land for farming purposes. OR Irrigation is the artificial application of water to the soil to supplement insufficient rainfall.

(3aii)
(i) It increases crop productivity vir crop yield.
(ii) Irrigation provides humid environment for the breeding of pest and pathogens of crops.
(iii) It assists in facilitating crop production all year round.
(iv) It soften the soil for east tillage operation.
(v) It also cools the soil by reducing the soil temperature during the dry season when the soil temperature I very high. Plant growth is thus improved.

*WAEC GCE AGRIC THEORY ANSWERS*

(3ai) Irrigation is defined as the artificial or manmade application of water to soil or land for farming purposes. OR Irrigation is the artificial application of water to the soil to supplement insufficient rainfall.

(3aii)
(i) It increases crop productivity vir crop yield.
(ii) Irrigation provides humid environment for the breeding of pest and pathogens of crops.
(iii) It assists in facilitating crop production all year round.
(iv) It soften the soil for east tillage operation.
(v) It also cools the soil by reducing the soil temperature during the dry season when the soil temperature I very high. Plant growth is thus improved.

3bi
Reforestation is the natural or intentional restocking of existing forests and woodlands that have been depleted, usually through deforestation, but also after clearcutting…

3bii
Afforestation is the conversion of abandoned and degraded agricultural lands into forests, while reforestation is the replantation of trees in deforested land.

3biii
Selective exploitation: Is the cutting of matured trees leaving the young ones to continue growing to avoid destructive effects of both wind and water erosion.

(3c)
1. Eastern Redbud.
2. Saucer Magnolia.
3. White Dogwood.
4. Sweetbay Magnolia.
5. Yoshino Cherry.
6. Prairifire Flowering

*================*
*================*

(1)
(i) Provision of storage facilities
(ii) Provision of processing facilities
(iii) Establishment of marketing board
(iv) Government should buy to sell at subsidized price
(v) Encouragement of crop export

(1b)
(i) Hoe, Cutlass
(ii) Hand trowel, Cutlass
(iii) Harvesting knife, Sickle, Dibble
(iv) Milking machine, Sheller

(1c)
(i) Economic limitation
(ii) High cost of purchase/maintenance
(iii) Inadequate technical know-How
(iv) Most farmers are illiterate
(v) lack of maintenance culture

(3aiii)
UNDER USE OF SPRINKLERS
(i) The amount of water supplied is regulated.
(ii) It economizes the use of water.
(iii) it is costly to construct and operate.

UNDER SURFACE IRRIGATION
(i) The volume of water, especially in flooding, may be difficult to control.
(ii) It removes excess water caused by heavy rainfall especially in heavy soils.
(iii) It is easier to construct and operate.

(1)
(i) Provision of storage facilities
(ii) Provision of processing facilities
(iii) Establishment of marketing board
(iv) Government should buy to sell at subsidized price
(v) Encouragement of crop export

(1b)
(i) Hoe, Cutlass
(ii) Hand trowel, Cutlass
(iii) Harvesting knife, Sickle, Dibble
(iv) Milking machine, Sheller

(1c)
(i) Economic limitation
(ii) High cost of purchase/maintenance
(iii) Inadequate technical know-How
(iv) Most farmers are illiterate
(v) lack of maintenance culture

=============================

(2ai) Irrigation is defined as the artificial or manmade application of water to soil or land for farming purposes. OR Irrigation is the artificial application of water to the soil to supplement insufficient rainfall.

(2aii)
(i) It increases crop productivity vir crop yield.
(ii) Irrigation provides humid environment for the breeding of pest and pathogens of crops.
(iii) It assists in facilitating crop production all year round.
(iv) It soften the soil for east tillage operation.
(v) It also cools the soil by reducing the soil temperature during the dry season when the soil temperature I very high. Plant growth is thus improved.

=============================

(3aiii)
UNDER USE OF SPRINKLERS
(i) The amount of water supplied is regulated.
(ii) It economizes the use of water.
(iii) it is costly to construct and operate.

UNDER SURFACE IRRIGATION
(i) The volume of water, especially in flooding, may be difficult to control.
(ii) It removes excess water caused by heavy rainfall especially in heavy soils.
(iii) It is easier to construct and operate.

(3bi)
Reforestation is the natural or intentional restocking of existing forests and woodlands that have been depleted, usually through deforestation, but also after clearcutting…

(3bii)
Afforestation is the conversion of abandoned and degraded agricultural lands into forests, while reforestation is the replantation of trees in deforested land.

(3biii)
Selective exploitation: Is the cutting of matured trees leaving the young ones to continue growing to avoid destructive effects of both wind and water erosion.

(3c)
(i) Eastern Redbud.
(ii) Saucer Magnolia.
(iii) White Dogwood.
(iv) Sweetbay Magnolia.
(v) Yoshino Cherry.
6. Prairifire Flowering

*TAKE NOTE*

(2aiii)
UNDER USE OF SPRINKLERS
(i) The amount of water supplied is regulated.
(ii) It economizes the use of water.
(iii) it is costly to construct and operate.

UNDER SURFACE IRRIGATION
(i) The volume of water, especially in flooding, may be difficult to control.
(ii) It removes excess water caused by heavy rainfall especially in heavy soils.
(iii) It is easier to construct and operate.

(2ai) Irrigation is defined as the artificial or manmade application of water to soil or land for farming purposes. OR Irrigation is the artificial application of water to the soil to supplement insufficient rainfall.

(2aii)
(i) It increases crop productivity vir crop yield.
(ii) Irrigation provides humid environment for the breeding of pest and pathogens of crops.
(iii) It assists in facilitating crop production all year round.
(iv) It soften the soil for east tillage operation.
(v) It also cools the soil by reducing the soil temperature during the dry season when the soil temperature I very high. Plant growth is thus improved.

(2aiii)
{UNDER USE OF SPRINKLERS}
(i) The amount of water supplied is regulated.
(ii) It economizes the use of water.
(iii) it is costly to construct and operate.

{UNDER SURFACE IRRIGATION}
(i) The volume of water, especially in flooding, may be difficult to control.
(ii) It removes excess water caused by heavy rainfall especially in heavy soils.
(iii) It is easier to construct and operate.

(1)
(i) Provision of storage facilities
(ii) Provision of processing facilities
(iii) Establishment of marketing board
(iv) Government should buy to sell at subsidized price
(v) Encouragement of crop export

(1b)
(i) Hoe, Cutlass
(ii) Hand trowel, Cutlass
(iii) Harvesting knife, Sickle, Dibble
(iv) Milking machine, Sheller

(1c)
(i) Economic limitation
(ii) High cost of purchase/maintenance
(iii) Inadequate technical know-How
(iv) Most farmers are illiterate
(v) lack of maintenance culture

=========================================================

(2ai) Irrigation is defined as the artificial or manmade application of water to soil or land for farming purposes. OR Irrigation is the artificial application of water to the soil to supplement insufficient rainfall.

(2aii)
(i) It increases crop productivity vir crop yield.
(ii) Irrigation provides humid environment for the breeding of pest and pathogens of crops.
(iii) It assists in facilitating crop production all year round.
(iv) It soften the soil for east tillage operation.
(v) It also cools the soil by reducing the soil temperature during the dry season when the soil temperature I very high. Plant growth is thus improved.

(2aiii)
{UNDER USE OF SPRINKLERS}
(i) The amount of water supplied is regulated.
(ii) It economizes the use of water.
(iii) it is costly to construct and operate.

{UNDER SURFACE IRRIGATION}
(i) The volume of water, especially in flooding, may be difficult to control.
(ii) It removes excess water caused by heavy rainfall especially in heavy soils.
(iii) It is easier to construct and operate.

=========================================================

(3ai) Irrigation is defined as the artificial or manmade application of water to soil or land for farming purposes. OR Irrigation is the artificial application of water to the soil to supplement insufficient rainfall.

(3aii)
(i) It increases crop productivity vir crop yield.
(ii) Irrigation provides humid environment for the breeding of pest and pathogens of crops.
(iii) It assists in facilitating crop production all year round.
(iv) It soften the soil for east tillage operation.
(v) It also cools the soil by reducing the soil temperature during the dry season when the soil temperature I very high. Plant growth is thus improved.

3bi
Reforestation is the natural or intentional restocking of existing forests and woodlands that have been depleted, usually through deforestation, but also after clearcutting…

3bii
Afforestation is the conversion of abandoned and degraded agricultural lands into forests, while reforestation is the replantation of trees in deforested land.

3biii
Selective exploitation: Is the cutting of matured trees leaving the young ones to continue growing to avoid destructive effects of both wind and water erosion.

(3c)
1. Eastern Redbud.
2. Saucer Magnolia.
3. White Dogwood.
4. Sweetbay Magnolia.
5. Yoshino Cherry.
6. Prairifire Flowering

=========================================================

4a)
*soil requirements*
i)The most important aspect of the soil for banana plants is that it must be well-draining. Any soil that holds water can quickly kill a banana tree. This means that the soil you use to plant your banana tree should include loamy, sandy soil , not fine sand that clings together, but larger grains that drain easily.

ii) *Land Preparation:* Clearing of the land which is followed by stumping and maklng of ridges or heaps. It can also be done mechanically through ploughing, harrowing and ridging.

iii) *method of propagation*
Banana is propagated by vegetative means any time from April to September. Dig a hole and plant the sucker with ball .of earth. The hole should be 60cm x 600m. The holes are filled with soil mixed with organic matter.
(4b)
i.) Many chicks can be hatched at a time in a short while.
(ii). Another thing is that it is possible to plan when to hatch the chicks unlike with the hen one may not know when it can sit for the eggs.
(III). Artificial incubation cannot spread parasites and diseases to the chicks and lastly there is no cost for feeding a broody hen since an incubator is used.
(iv). Chances of eggs spoilage are minimized since all eggs are subjected to the optimal hatching temperatures.
(v). There are no chances of the hen damaging eggs through pecking, a common occurrence with natural incubation.

(2ai)
Irrigation is defined as the artificial application of water to the soil for farming purposes.

(2aii)
(i) It ensures early planting of crops.
(ii) It ensures greater productivity of crops.
(iii) It corrects soil salinity.
(iv) It enables farmers to grow crops throughout the year.

(2aiii)
=USE OF SPRINKLERS=
(i) It is expensive
(ii) It is suitable for lands with all kinds of slopes
(iii) It is suitable for lands with all kinds of slopes

=SURFACE IRRIGATION=
(i) It is cheap
(ii) It requires gentle slope
(iii) It is easy to operate

(2ai)
Irrigation is defined as the artificial or manmade application of water to soil or land for farming purposes. OR Irrigation is the artificial application of water to the soil to supplement insufficient rainfall.

(2aii)
(i) It increases crop productivity vir crop yield.
(ii) Irrigation provides humid environment for the breeding of pest and pathogens of crops.
(iii) It assists in facilitating crop production all year round.
(iv) It soften the soil for east tillage operation.

(2aiii)
-UNDER USE OF SPRINKLERS-
(i) The amount of water supplied is regulated.
(ii) It economizes the use of water.
(iii) it is costly to construct and operate.

-UNDER SURFACE IRRIGATION-
(i) The volume of water, especially in flooding, may be difficult to control.
(ii) It removes excess water caused by heavy rainfall especially in heavy soils.
(iii) It is easier to construct and operate.

(2b)
(i) Agriculture provides market for industrial products, e.g. farm machinery, chemicals, fertilizer, etc.
(ii) Provides food to industrial workers.
(iii) both agriculture and industry compete for labour.
(iv) agricultural development allows for a shift of factors of production to the industry.
(v) rise in agricultural income due to efficient and economic factor combination brings about development of the industrial sector of the economy.

(2c)
(i)Leafhopper; rice tungro virus
(ii)Mealybug; cocoa mottle leaf virus.
(iii)Aphid; bean common mosaic virus
(iv)Whitefly; yellow mosaic diseases

*WAEC GCE AGRICULTURE THEORY ANSWERS*

(1)
(i) Provision of storage facilities
(ii) Provision of processing facilities
(iii) Establishment of marketing board
(iv) Government should buy to sell at subsidized price
(v) Encouragement of crop export

(1b)
(i) Hoe, Cutlass
(ii) Hand trowel, Cutlass
(iii) Harvesting knife, Sickle, Dibble
(iv) Milking machine, Sheller

(1c)
(i) Economic limitation
(ii) High cost of purchase/maintenance
(iii) Inadequate technical know-How
(iv) Most farmers are illiterate
(v) lack of maintenance culture

=========================================================

(2ai)
Irrigation is defined as the artificial or manmade application of water to soil or land for farming purposes. OR Irrigation is the artificial application of water to the soil to supplement insufficient rainfall.

(2aii)
(i) It increases crop productivity vir crop yield.
(ii) Irrigation provides humid environment for the breeding of pest and pathogens of crops.
(iii) It assists in facilitating crop production all year round.
(iv) It soften the soil for east tillage operation.

(2aiii)
-UNDER USE OF SPRINKLERS-
(i) The amount of water supplied is regulated.
(ii) It economizes the use of water.
(iii) it is costly to construct and operate.

-UNDER SURFACE IRRIGATION-
(i) The volume of water, especially in flooding, may be difficult to control.
(ii) It removes excess water caused by heavy rainfall especially in heavy soils.
(iii) It is easier to construct and operate.

(2b)
(i) Agriculture provides market for industrial products, e.g. farm machinery, chemicals, fertilizer, etc.
(ii) Provides food to industrial workers.
(iii) both agriculture and industry compete for labour.
(iv) agricultural development allows for a shift of factors of production to the industry.
(v) rise in agricultural income due to efficient and economic factor combination brings about development of the industrial sector of the economy.

(2c)
(i)Leafhopper; rice tungro virus
(ii)Mealybug; cocoa mottle leaf virus.
(iii)Aphid; bean common mosaic virus
(iv)Whitefly; yellow mosaic diseases
=========================

(3ai) Irrigation is defined as the artificial or manmade application of water to soil or land for farming purposes. OR Irrigation is the artificial application of water to the soil to supplement insufficient rainfall.

(3aii)
(i) It increases crop productivity vir crop yield.
(ii) Irrigation provides humid environment for the breeding of pest and pathogens of crops.
(iii) It assists in facilitating crop production all year round.
(iv) It soften the soil for east tillage operation.
(v) It also cools the soil by reducing the soil temperature during the dry season when the soil temperature I very high. Plant growth is thus improved.

(3bi)
Reforestation is the natural or intentional restocking of existing forests and woodlands that have been depleted, usually through deforestation, but also after clearcutting…

(3bii)
Afforestation is the conversion of abandoned and degraded agricultural lands into forests, while reforestation is the replantation of trees in deforested land.

(3biii)
Selective exploitation: Is the cutting of matured trees leaving the young ones to continue growing to avoid destructive effects of both wind and water erosion.

(3c)
(1) Eastern Redbud.
(2) Saucer Magnolia.
(3) White Dogwood.
(4) Sweetbay Magnolia.
(5) Yoshino Cherry.
(6) Prairifire Flowering
=========================

(4a)
SOIL REQUIREMENTS:-
(i)The most important aspect of the soil for banana plants is that it must be well-draining. Any soil that holds water can quickly kill a banana tree. This means that the soil you use to plant your banana tree should include loamy, sandy soil , not fine sand that clings together, but larger grains that drain easily.

(ii) LAND PREPARATION:- Clearing of the land which is followed by stumping and maklng of ridges or heaps. It can also be done mechanically through ploughing, harrowing and ridging.

(iii) METHOD OF PROPAGATION:-
Banana is propagated by vegetative means any time from April to September. Dig a hole and plant the sucker with ball .of earth. The hole should be 60cm x 600m. The holes are filled with soil mixed with organic matter.
(4b)
(i) Many chicks can be hatched at a time in a short while.
(ii) Another thing is that it is possible to plan when to hatch the chicks unlike with the hen one may not know when it can sit for the eggs.
(III) Artificial incubation cannot spread parasites and diseases to the chicks and lastly there is no cost for feeding a broody hen since an incubator is used.
(iv) Chances of eggs spoilage are minimized since all eggs are subjected to the optimal hatching temperatures.
(v) There are no chances of the hen damaging eggs through pecking, a common occurrence with natural incubation.
=========================

(5b)
(¡) increasing pH in acidic soil,
(¡¡)reducing acidity,
(¡¡¡) increasing alkalinity.
(¡¡¡¡) a source of calcium for plants.
(V) improving water penetration in acidic soils.

(5ai)
Phenotype refers to the observable and measurable characteristics of an organism as a result of the interaction of the genes of the organism, environmental factors, and random variation.

(5aii)
Chromosomes are the thread-like structure present in the nucleus of plant and animal cells. Chromosomes are the vehicle that carries DNA wrapped around by the histone proteins.

(5aiii)
Hybrid is the offspring resulting from combining the qualities of two organisms of different breeds, varieties, species or genera through sexual reproduction.

(5aiv)
gamete is the mature reproductive or sex cell that contains a haploid number of chromosomes and is capable of fusing with another haploid reproductive cell to form a diploid zygote.

(5av)
Filial generation is a generation in a breeding experiment that is successive to a mating between parents of two distinctively different but usually relatively pure genotypes

(4ai)
soil requirements; The most important aspect of the soil for banana plants is that it must be well-draining. Any soil that holds water can quickly kill a banana tree. This means that the soil you use to plant your banana tree should include loamy, sandy soil , not fine sand that clings together, but larger grains that drain easily.

(4aii)
Land Preparation; Clearing of the land which is followed by stumping and maklng of ridges or heaps. It can also be done mechanically through ploughing, harrowing and riding.

(4aiii)
method of propagation; Banana is propagated by vegetative means any time from April to September. Dig a hole and plant the sucker with ball .of earth. The hole should be 60cm x 600m. The holes are filled with soil mixed with organic matter.

(4aiv)
Fertilizer requirements; Apply Muriate of potash 25kg/ha by ring method at regular intervals.

(4av)
(i)Banana aphid.
(ii)Banana flower thrips.

(4avi)
(i)Stem Borer; The larvae of some insects bore into and destroy the tissue of the plant.
(ii)Nematode; It makes the root of banana to grow galls or knots, leading to poor growth.

(4avii)
Harvesting: A bunch of banana is harvested when the fruit is severed from the bunch stalk by using cutlass. At times the pseudo-stem is cut until the tree falls.

(4b)
(i)Many chicks can be hatched at a time in a short while.
(ii)Another thing is that it is possible to plan when to hatch the chicks unlike with the hen one may not know when it can sit for the eggs.
(iii)Artificial incubation cannot spread parasites and diseases to the chicks and lastly there is no cost for feeding a broody hen since an incubator is used.
(iv)Chances of eggs spoilage are minimized since all eggs are subjected to the optimal hatching temperatures.
(v) There are no chances of the hen damaging eggs through pecking, a common occurrence with natural incubation.

(4c)
(i)cuttings
(ii)layering
(iii)division
(iv)budding and grafting.

AGRIC SCIENCE
1-10: BBCDCCBBBA
11-20: BDABBBCBCB
21-30: ADAABABCAD
31-40: BCAACDDBAA
41-50: DAADDABDBB

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