WAEC 2022 Agric Science Obj And Essay Answer-May/June Expo

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AGRICULTURE OBJ

01-10: BCDCCDDBAC

11-20: BAABDBBAAA

21-30: BACBBDDABD

31-40: ADBACBCDBB

41-50: CDDDADBDCA

COMPLETED

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 AGRIC SCIENCE ANSWERS

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(1a)

(i) To safeguard farmers against unreasonable eviction

(ii) To ensure that agricultural land is not unnecessarily diverted to non-agricultural purposes

(iii) To make large tracts of land available for government-sponsored development of large scale farms 

(iv) To carry out large scale improvement such as irrigation, drainage and soil water conservation

(1bi) 

Mechanical power

(1bii)

(i) It can handle more areas per unit of time

(ii) It works faster and more efficient

(iii) It can perform a wide range of operation

(iv) It reduces cost of labor and total cost of production

(1c)

(i) Seed tube: They conduct seeds from feed cups to the furrow lines

(ii) Furrow opener: It creates a well-defined groove in the soil where the seed can be placed at the proper depth

(iii) Hopper: holds particulate matter or flow-able material of any sort

(iv) Seed metering device: to collect seed in a singular or group fashion 

(v) Furrow wheel: To stabilize the plough and take side thrust

(1d)

(i) Plough 

(ii) Cultivator

(iii) Harrow

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(2ai)

Monocropping is a practice of cultivating a single crop species each growing season and harvesting it before another crop is planted.

(2aii)

Mixed cropping is a system of farming in which both crops and animals are raised on the same farm or piece of land.

(2aiii)

Mixed farming is a system of farming in which both crops and animals are raised on the same farm or piece of land

(2aiv)

Crop rotation is the planting of different types of crops on the same piece of land in a definite sequence.

(2bi)

phosphorus deficiency

(2bii)

(i)Sodium nitrate

(ii)ammonium sulphate.

(iii)Urea

(iv)Magnesium sulphate.

(2c)

(i) Willow

(ii) Butterfly weed

(iii)Sun flower

(iv)wax

(v)dead branches

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(3a)

(i) Storage pests: During storage, pests can infest crops if storage is not properly done.

(ii) Moisture: Maize can be destroyed if water finds its way into the maize grains.

(iii) Temperature: Maize will be destroyed during storage if temperature is not adequate

(iv) Poor aeration: When Maize grains during storage do not have access to moderate aeration, they can be damaged.

(3b)

https://i.imgur.com/mqqbxzp.jpg

(3c)

Mendel’s first law states that genes are present in pairs in non-reproductive cells so that each gamete contains only one contrasting factor. [SEGREGATION]

Mendel’s second law states that when more than one pair of factors are considered, each pair segregates independently of every other pair.[INDEPENDENT ASSORTMENT]

(3d)

(PICK ANY TWO)

(i) Alfalfa

(ii) Andropogon

(iii) Sorghum

(iv) Panicum

(v) Pennisetum 

(vi) Axonopus

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(4a)

[TABULATE]

(i) =CROP=

ONION

=BOTANICAL NAME=

Allium cepa

=CLASSIFICATION BASED ON USE=

Spice Crop

=METHOD OF PROPAGATION=

Vegetative propagation 

(ii) =CROP=

GINGER

=BOTANICAL NAME=

Zingiber Officinale

=CLASSIFICATION BASED ON USE=

Spice Crop

=METHOD OF PROPAGATION=

Cutting

(iii) =CROP=

JUTE

=BOTANICAL NAME=

Corchorus Olitorius

=CLASSIFICATION BASED ON USE=

Latex Crop

=METHOD OF PROPAGATION=

Seed

(4b)

Total area = 36×10

= 360m³

Space = 0.36m³

Number of broiler = Total area/Space

= 360/0.36

= 1000

(4c)

(i) It increases the nutrient level of the soil

(ii) It ensures balsnced ration for livestocks while grazing

(iii) It reduces cost of feeding livestocks

(v) It reduces the attack of pests

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(5ai)

Balance diet is the feed that contains all the nutrients in the right proportion. 

(5aii)

Maintenance ration is the amount of feed that is given to an animal to sustain its live weight.

(5aiii)

Production ration is the amount of feed supplied to an animal to promote growth and production. 

(5aiv)

Manutriton is a condition which results when an animal is fed on a diet which is fed on a diet which is deficient in quantity and quantity of the essential nutrients in the right proportion

(5b)

[PICK ANY SIX]

(i) Physics deformation e.g rickets, osteomalacia

(ii) High mortality rate among young animals

(iii)Slow or retarded growth

(iv)Low production e.g reduce milk production.

(v) High susceptibility to disease

(vi) High morbidity rate among older animals

(vii)Loss in weight

(5c)

 (i)Shading

(ii)Weeding

(iii)Watering

(iv)Mulching

                  COMPLETED

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