Horticulture: Vegetable Production MCQs 2026

Trellising is particularly useful for climbing vegetables such as

1. APotato and carrot✓
2. BCucumber and bitter gourd✓
3. COnion and garlic✓
4. DRadish and turnip✓

The edible structure of a cultivated mushroom is the

1. AFruiting body✓
2. BTap root✓
3. CTrue seed✓
4. DLeaf blade✓

Curing of onion bulbs is carried out mainly to

1. AStart active root growth✓
2. BIncrease leaf succulence✓
3. CConvert bulbs into tubers✓
4. DDry necks and outer scales for better storage✓

Seed priming refers to

1. ABurning seed before sowing✓
2. BHarvesting immature fruits✓
3. CControlled pre-sowing hydration of seed✓
4. DDeep ploughing after harvest✓

Integrated pest management in vegetables means

1. AUsing pesticides at random✓
2. BCombining compatible control methods✓
3. CIgnoring monitoring and thresholds✓
4. DRemoving all beneficial insects deliberately✓

Growing vegetables in nutrient solution without soil is called

1. AHydroponics✓
2. BApiculture✓
3. CSericulture✓
4. DSilviculture✓

Plant spacing in vegetable crops directly influences

1. AChromosome number only✓
2. BSeed coat colour only✓
3. CPlant population per unit area✓
4. DBotanical family only✓

Tomato, brinjal and chilli are collectively called

1. ACole crops✓
2. BRoot crops✓
3. CBulb crops✓
4. DSolanaceous vegetables✓

Yellow vein mosaic of okra is mainly transmitted by

1. AWhitefly✓
2. BAphid only✓
3. CNematode only✓
4. DRed pumpkin beetle✓

Leaf curl disease in chilli is commonly spread by

1. AEarthworm✓
2. BWhitefly✓
3. CHoney bee✓
4. DTermite only✓

Leguminous vegetables improve soil fertility mainly through

1. AConversion of phosphorus into oxygen✓
2. BRemoval of all organic matter✓
3. CRhizobium-assisted nitrogen fixation✓
4. DBlocking root nodule formation✓

Staking is especially useful in indeterminate tomato because it

1. AConverts roots into tubers✓
2. BStops flowering completely✓
3. CReplaces all fertilization✓
4. DSupports vines and keeps fruit off the soil✓

Seed viability is commonly assessed by measuring

1. ALeaf area index only✓
2. BGermination percentage✓
3. CFruit acidity only✓
4. DSoil bulk density only✓

The main advantage of hybrid vegetable seed is

1. AExploitation of heterosis✓
2. BPermanent elimination of irrigation✓
3. CGuaranteed pest immunity✓
4. DZero nutrient requirement✓

Garden pea is generally considered a

1. AHot desert perennial✓
2. BTropical tree vegetable✓
3. CWarm-season cucurbit✓
4. DCool-season vegetable✓

Bacterial wilt of tomato is commonly caused by

1. APuccinia graminis✓
2. BSclerotinia sclerotiorum✓
3. CRalstonia solanacearum✓
4. DPhytophthora capsici✓

The edible curd of cauliflower is an

1. AImmature inflorescence✓
2. BUnderground stem tuber✓
3. CMature dry seed✓
4. DExpanded storage root✓

Processing tomatoes are usually preferred when they have

1. AVery high seed dormancy✓
2. BHigh total soluble solids✓
3. CNo red pigment✓
4. DExtremely watery pulp only✓

Mulching in vegetable fields mainly helps in

1. AIncreasing soil erosion✓
2. BPreventing all root growth✓
3. CMaking irrigation impossible✓
4. DMoisture conservation and weed suppression✓

Cold treatment used to induce flowering in biennial vegetables is called

1. AEtiolation✓
2. BDesiccation✓
3. CVernalization✓
4. DScarification✓

Earthing up in potato production helps to

1. AInduce seedlessness✓
2. BCover developing tubers and support plants✓
3. CRemove all nutrients from soil✓
4. DStop stolon formation✓

Hardening of vegetable seedlings means

1. AGradually exposing seedlings to field conditions✓
2. BKeeping seedlings permanently under high humidity✓
3. CRemoving all roots before transplanting✓
4. DHarvesting seedlings at flowering✓

Premature flowering in a vegetable crop before useful vegetative growth is called

1. ABlanching✓
2. BRatooning✓
3. CBolting✓
4. DRoguing✓

Most cucurbits bear male and female flowers separately on the same plant, a condition called

1. ADioecious✓
2. BApomictic✓
3. CViviparous✓
4. DMonoecious✓

Tomatoes for distant markets are often harvested at the

1. ABreaker stage✓
2. BFully rotten stage✓
3. CDry seed stage✓
4. DLeaf senescence stage✓

Ridge and furrow planting is especially common in the cultivation of

1. ASpinach✓
2. BPotato✓
3. CMint✓
4. DCoriander✓

The edible part of sweet potato is a

1. AStem tuber✓
2. BCorm✓
3. CStorage root✓
4. DBulb scale✓

The most water-efficient irrigation method for many vegetable crops is

1. AWild flooding✓
2. BUnlined basin irrigation✓
3. CContinuous overhead flooding✓
4. DDrip irrigation✓

A fertilizer grade written as 19-19-19 indicates equal percentages of

1. ACalcium, sulfur and zinc✓
2. BNitrogen, phosphorus and potassium✓
3. CCarbon, hydrogen and oxygen✓
4. DIron, boron and copper✓

Crop rotation in vegetable production is mainly useful for

1. AReducing pest and disease build-up✓
2. BKeeping one nutrient permanently unchanged✓
3. CEliminating all irrigation needs✓
4. DPreventing pollination✓

Bitter gourd belongs to the family

1. ASolanaceae✓
2. BFabaceae✓
3. CApiaceae✓
4. DCucurbitaceae✓

Garlic is commercially propagated by

1. ATrue botanical seed only✓
2. BStem cuttings✓
3. CCloves✓
4. DRunners✓

Knol-khol is grown mainly for its edible

1. ASwollen stem✓
2. BImmature flower✓
3. CStorage root✓
4. DLeaf blade✓

The serious insect pest known as brinjal shoot and fruit borer is

1. ABactrocera dorsalis✓
2. BLeucinodes orbonalis✓
3. CHelicoverpa armigera✓
4. DPlutella xylostella✓

Garden pea is valuable in rotations because it belongs to

1. ASolanaceae✓
2. BMalvaceae✓
3. CPoaceae✓
4. DLeguminosae or Fabaceae✓

The edible head of cabbage is mainly a modified

1. AStorage root✓
2. BRhizome✓
3. CTerminal bud✓
4. DSeed pod✓

Tomato, brinjal and chilli are members of the family

1. ACucurbitaceae✓
2. BSolanaceae✓
3. CBrassicaceae✓
4. DChenopodiaceae✓

Development of fruit without fertilization is called

1. AParthenocarpy✓
2. BVernalization✓
3. CPhotoperiodism✓
4. DStratification✓

Damping-off in vegetable nurseries is best reduced by

1. AExcessive shade and flooding✓
2. BVery deep seed placement✓
3. CSterile well-drained nursery medium✓
4. DDelaying all seed treatment✓

Late blight of potato is caused by

1. AAlternaria brassicae✓
2. BRalstonia solanacearum✓
3. CFusarium oxysporum✓
4. DPhytophthora infestans✓

Blanching in cauliflower production is mainly done to

1. AKeep the curd white and tender✓
2. BIncrease seed dormancy✓
3. CPromote tuber sprouting✓
4. DInduce root nodulation✓

Cucurbit vegetables are usually established in the field by

1. AGrafting only✓
2. BDirect seeding✓
3. CCorm planting✓
4. DBare-root transplanting only✓

The plant hormone most closely linked with tomato fruit ripening is

1. AAuxin✓
2. BGibberellin✓
3. CEthylene✓
4. DCytokinin✓

The pungent principle in chilli fruit is

1. ACitric acid✓
2. BAllicin✓
3. CCarotene✓
4. DCapsaicin✓

The characteristic pungency of onion is mainly associated with

1. ACapsaicin✓
2. BAllyl propyl disulfide✓
3. CLycopene✓
4. DSolanine✓

Carrot is primarily classified as a

1. ARoot vegetable✓
2. BBulb vegetable✓
3. CFruit vegetable✓
4. DLeafy vegetable✓

Okra is placed in the botanical family

1. AApiaceae✓
2. BAmaryllidaceae✓
3. CPoaceae✓
4. DMalvaceae✓

The edible portion of potato is a

1. ATap root✓
2. BStem tuber✓
3. CBulb✓
4. DLeaf petiole✓

The botanical family of cole crops such as cabbage and cauliflower is

1. ASolanaceae✓
2. BCucurbitaceae✓
3. CBrassicaceae✓
4. DFabaceae✓

Which vegetable crop is commonly raised in a nursery before field transplanting

1. ATomato✓
2. BCarrot✓
3. CRadish✓
4. DGarlic✓