NECO GCE AGRIC SCIENCE Questions and Answers – 2019 NECO GCE Expo

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AGRIC OBJ

1-10: AABADABBEE

11-20: BDCDABEBAC

21-30: AABCBBEBAB

31-40: EDEEEBAACD

41-50: CACAEDEDCC

51-60: EAADEDECCC

Agriculture science answer

(2a)

(i) Commercial agriculture increases yield

(iv) Provision of cheap products

(iii) Provision of quality products

(2bi)

(i) To improve human welfare and food

supplies in Africa 

(ii) To Increase livestock production

(2bii)

(i) Conducts research on protecting the environment. 

(ii) To reduce poverty, hunger, malnutrition and environmental degradation in the dryland tropics.

(2c)

(i) It helps to know the size or hectarage of a farmstead

(ii)It helps in the arrangement of land for proper usage without the risk of land degredation. 

(iii) Farm surveying help to make proper use of resources available 

(2d)

(i) Step-by-step assessment tests covering all areas of

interest

(ii) Detailed solutions and insights

(iii) Progress reports and analysis

(2e)

(i) As a result of the mode of systematically registering titles, all those land owners with registered titles are open and eligible to note opportunities than land owners without a registered title.

(ii) The land use act causes delay in land acquisition.

(iii) This power given to the governors have been abused by

many as lands in their trust are either used as they will, or withheld from potential developers.

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(3ai) 

Drainage is a process whereby excess  water in the soil is removed artificially to promote good farming activities. 

 

(3aii) 

(i) Surface Drainage. 

(3aii) Sub-surface Drainage. 

(3b) 

(i)It maintains soil ability to absorb and retain water. 

(ii)It helps control erosion. 

(iii)It reduces lost of soil nutrients.

(iv)It helps to the activities of microorganisms

(3c)

(i) Copper: It facilitates respiration and photosynthesis and is important for plant metabolism.

(ii) Boron: It increases yield/it facilitates modulation in leguminous plants.

(iii) Zinc: It is used in the formation of chlorophyll and some carbohydrates

(3d)

(i) Temperature 

(ii) Wind 

(iii) Water 

(3e)

Commensalism, is a relationship between individuals of two species in which one species obtains food or other benefits from the other without either harming or benefiting the latter while Mutualism is a  relationship between organisms of two different species in which each benefits.

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(5a) 

{TABULATE: PICK 3}

{MONOCOTS} 

(i) They has embryo with single cotyledon 

(ii) major leaf vein is parallel 

(iii) The stem arranges the vascular tissue sporadically 

(iv) Roots are adventitious  

 (v) Flower parts are in multiples of three 

{DICOTS} 

(i) Embryo with two cotyledons

(ii) major leaf vein is reticulated 

(iii) stem vascular bundles are in a ring 

(iv) roots developes from radicle 

(v) Flower parts are in multiple of four or five

(5b) 

(i) Cola nitida

(ii) Manihot esculenta

(iii) Hevea brasiliensis 

(iv) Solanum lycopersicum

(5ci)

{Aphids} 

Crop attacked are pumpkin, melon, bean, potato, lettuce, beet, chard

{Economic importance}  

(i) Nymph and adult aphids feed on plant juices.

(ii) They attack everywhere on plants, starting from the leaves, the stem, the buds, flowers and eventually the fruit of the crop involved. 

{Control} 

(i) If you have a large aphid invasion, dust plants with flour. It constipates the pests.

(ii) Try spraying cold water on the leaves

(5cii) 

{Spider mites} 

Crop attacked are

strawberries, melons, beans, tomatoes, eggplant

{Economic important} 

They cause damage to crop 

{Control} 

(i) Prune leaves, stems and other infested parts of plants

(ii) Use the Bug Blaster to wash plants with a strong stream of water and reduce pest numbers.

(5ciii) 

{Grasshopper} 

Crop attacked are plant leaves, tasels etc

{Economic importance} 

(i) They cause nutrient cycling by breaking down plants, fertilizing soils with their excreta and in turn facilitating plant growth.

(iii) Preys upon smaller insect pests of plants.

{Control} 

(i) physical control measures like handpicking adults and trapping in soapy water

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(7ai)

Allelomorphs are any one of two or more genes that may occur alternatively at a given site (locus) on a chromosome aand that control the same character

(7aii)

(i) Specialized equipment is needed. 

(ii) Technical expertise is needed

(iii) Improper cleaning of instruments and in sanitary conditions may lead to lower fertility.

(7b)

(i) Presence of vegetation covers

(ii) High temperature

(iii) Poor annual rainfall 

(iv) Degraded land

(v) Poor drainage

(7c)

Diagram [https://i.imgur.com/3yKbYPv.jpg]

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