WAEC 2020 AGRIC SCIENCE PRACTICAL ANSWERS

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WAEC 2020 COMMERCE ANSWERS – EXPO RUNS

 

 

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(1a)
-Specimen A-
(i)To shape soil
(ii)To remove weeds
(iii) T clear soil
(iv)For harvesting root crops

-Specimen B-
(i)It is use for prying
(ii)It is use for breaking up hard ground or rock.

(1b)
(i)Circus fruits
(ii)Apple
(iii)Pear
(iv)Plum

(1c)
(i)Elsetractor
(ii)Hemostat forceps
(iii)Artery forceps

(1d)
(i)Sharpen tool before and after use.
(ii)Oil or grease metal parts.
(ii)Dry tools after use
(iv)Keep them in cool dry place


(2a)
The aim of the experimental set up is to separate the specimen F(sandy loam) into fractions of different layers by sedimentation method

(2b)
(i)Soil sample
(ii) Hydrogen peroxide
(iii)Measuring cylinder

(2c)
(i) collect some sample of specimen F (sandy loam) from the school garden
(iii)Fill up to about 250cm³ measuring cylinder and add 200cm³ of water to the soul in the measuring cylinder
(iv) Add small quantity of hydrogen peroxide to the content of the measuring cylinder. This help to break up soil lumps

(2d)
(i)Sandy soil
(ii)Loamy soil
(iii)Organic particles
(iv)water

(2e)
CLICK HERE FOR THE IMAGE


(3ai)
Hydrocyanic acid

(3aii)
(i) Boiling
(ii) Sundrying
(iii) Soaking
(iv) Steaming

(3b)
Specimen I:
(i) It is an antioxidant, hence useful for medicinal purposes
(ii) Source of vitamin A

Specimen J:
(i) Serves as spice for food
(ii) For foreign exchange

(3c)
(i) Maggots
(ii) Thirps
(iii) Bulb eelworm
(iv) Bulb mites

(3d)
(i) Spices
(ii) Vegetable


(4a)
(i)They do not feed on each other
(ii)They have the same growth
(iii)They feed on similar foods and have the same living habitat

(4b)
(i)Cast net
(ii)Gill net
(iii)Hook and line
(iv)Fish trap

(4c)
(i)Cheese
(ii)Ice-cream
(iii)Yogurt
(iv)Butter

(4d)
(i)It seal pores
(ii)It present water loss
(iii)It encourage the growth f plantation
(iv)It reduce acidify of pond

 

COMMENTS

WORDPRESS: 1
  • comment-avatar
    Adam Ibrahim Adesola 4 weeks ago

    Did you do runz for A” level too e.g. JUPEB or IJMB??