JAMB and WAEC Agricultural Science questions

597 questions with answers and explanations. Tap an option to check yourself.

All topics Agricultural economics and extension · 41 Animal pests and diseases · 38 Animal reproduction and nutrition · 38 Classification and anatomy of farm animals · 37 Crop classification and propagation · 36 Crop pests and diseases · 39 Farm tools and mechanisation · 35 Fisheries and aquaculture · 35 Forestry · 33 Husbandry of field crops · 41 Irrigation and drainage · 36 Livestock management · 37 Meaning and importance of agriculture · 36 Soil fertility, manures and fertilisers · 43 Soil formation and properties · 39 Weeds and weed control · 33

Question 341· Husbandry of field crops· JAMB
Supplying, as a crop husbandry practice, means
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Answer: C. replacing seeds or seedlings that failed to grow
Explanation and discussion
Question 342· Husbandry of field crops· JAMB
Yam is staked to
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Answer: D. expose leaves to sunlight
Explanation and discussion
Question 343· Husbandry of field crops· JAMB
The seed rate for a crop depends mainly on
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Answer: B. seed size, spacing and viability
Explanation and discussion
Question 344· Husbandry of field crops· WAEC
Oil palm fruits are harvested when
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Answer: A. several loose fruits fall from the bunch
Explanation and discussion
Question 345· Husbandry of field crops· WAEC
Rice seedlings are usually transplanted from the nursery into
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Answer: C. flooded paddy fields
Explanation and discussion
Question 346· Husbandry of field crops· WAEC
Cassava is usually ready for harvesting from about
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Answer: B. 9 to 12 months after planting
Explanation and discussion
Question 347· Husbandry of field crops· WAEC
Mulching helps to
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Answer: B. conserve soil moisture and suppress weeds
Explanation and discussion
Question 348· Husbandry of field crops· WAEC
Seedlings raised in a nursery before being moved to the field are
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Answer: C. transplanted
Explanation and discussion
Question 349· Husbandry of field crops· WAEC
Vegetables such as amaranthus (green) are usually harvested
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Answer: A. a few weeks after planting
Explanation and discussion
Question 350· Husbandry of field crops· JAMB
Thinning of seedlings is done to
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Answer: C. reduce competition among plants
Explanation and discussion
Question 351· Husbandry of field crops· JAMB
Hardening-off of seedlings means
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Answer: C. gradually exposing them to field conditions before transplanting
Explanation and discussion
Question 352· Husbandry of field crops· WAEC
Raising seedlings in a nursery before transplanting is common for
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Answer: D. tomato and pepper
Explanation and discussion
Question 353· Husbandry of field crops· WAEC
Staggered planting of vegetables helps to
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Answer: A. ensure a continuous supply to the market
Explanation and discussion
Question 354· Husbandry of field crops· JAMB
Crop rotation helps to
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Answer: D. control pests and diseases and maintain soil fertility
Explanation and discussion
Question 355· Husbandry of field crops· JAMB
Lowland rice is usually grown in
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Answer: A. waterlogged or irrigated fields
Explanation and discussion
Question 356· Husbandry of field crops· JAMB
Thinning in crop production is done to
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Answer: C. reduce competition among seedlings
Explanation and discussion
Question 357· Husbandry of field crops· JAMB
Cassava stems for planting should be cut about
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Answer: D. 20-25 cm long with several nodes
Explanation and discussion
Question 358· Husbandry of field crops· WAEC
Yam setts are often treated before planting with
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Answer: D. wood ash or a fungicide to prevent rot
Explanation and discussion
Question 359· Husbandry of field crops· WAEC
Fermentation of cocoa beans after harvest is done to
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Answer: C. develop flavour and remove the pulp
Explanation and discussion
Question 360· Husbandry of field crops· JAMB
The main benefit of mulching a crop is that it
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Answer: C. conserves soil moisture
Explanation and discussion

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JAMB and WAEC Agricultural Science questions

Supplying, as a crop husbandry practice, means

Yam is staked to

The seed rate for a crop depends mainly on

Oil palm fruits are harvested when

Rice seedlings are usually transplanted from the nursery into

Cassava is usually ready for harvesting from about

Mulching helps to

Seedlings raised in a nursery before being moved to the field are

Vegetables such as amaranthus (green) are usually harvested

Thinning of seedlings is done to

Hardening-off of seedlings means

Raising seedlings in a nursery before transplanting is common for

Staggered planting of vegetables helps to

Crop rotation helps to

Lowland rice is usually grown in

Thinning in crop production is done to

Cassava stems for planting should be cut about

Yam setts are often treated before planting with

Fermentation of cocoa beans after harvest is done to

The main benefit of mulching a crop is that it