Horticulture practice set for competitive exams – Part 4

Horticulture most important questions for competitive exams – Part 3

  1. Application of which chemical in the form of foliar spray at the beginning of flower bud development may improved drought resistance is pea

(a) Kaolin

(c) Diuron

(b) CCC

(d) Chlormequat

  1. Which variety is an edible podded variety of pea ?

(a) Early Badger

(b) Khapar Kheda

(c) Rachna

(d) Sylvia

  1. Kasmir beauty and Golden heart are the varieties of

(a) Radish

(b) Carrot

(c) Turnip

(d) Beet root

  1. Carrot is a heavy feeder particularly

(a) N

(b) P

(c) K

(d) Ca

  1. Pungency in radish is due to volatile compound

(a) Erucic acid

(b) Isothiocyanates

(c) Allyl propyldisulphide

(d) Diallyl disulphide

  1. French Breakfast, Pusa Chetki, Arka Nishant and Bombay Red are the varieties of

(a) Carrot

(b) Radish

(c) Beet root

(d) Turnip

  1. Pusa Meghdoot and Pusa Manjari are the improved varieties of:

(a) Bottle gourd (c) Ridge gourd

(b) Bitter gourd (d) Snake gourd

  1. Which glucoside is helpful in preventing spoilage of cooked vegetable of bitter gourd?

(a) Cucurbitacin (c) Sinigrin

(b) Quercetin (d) Alliin

  1. Among cucurbits, which fruit is richest in iron content?

(a) Musk melon

(c) Bottle gourd

(b) Water melon

(d) Bitter gourd

  1. Durgapura Meetha, Durgapur Kesar and Pusa Bendana are the improved variety of:

(a) Musk melon

(b) Water melon

(c) Sweet potato

(d) Beet

  1. Jobner Green is a high yielding variety of:

(a) Indian spinach (beet leaf)

(b) Spinach

(c) Amaranthus

(d) Onion

  1. Which state is highest producer of fenugreek in India?

(a) Rajasthan

(b) Madhya pradesh

(c) Gujarat

(d) Maharashtra

  1. Which country ranked 1st in export of floricultural products in the world?

(a) Italy

(b) Netherlands

(c) Columbia

(d) India

  1. Who established most famous LALBAGH garden in Bangalore?

(a) King Hyder Ali

(b) Tipu Sultan

(c) Ranjit Singh

(d) King Surajmal

15.First variety of Hybrid Teas (H.T.) class of rose is:

(a) La France

(b) Tushar

(c) Vasant

(d) Sonia

  1. Roses are commonly propagated by:

(a) ‘T’ or shield budding

(b) Grafting

(c) Stem cutting

(d) Seeds

  1. Gladiolus is belongs to:

(a) Rosaceae

(b) Compositae

(c) Solanaceae

(d) Iridaceae

  1. Rose Supreme, Happy End and Friendship are improved varieties of:

(a) Rose

(b) Gladiolus

(c) Carnation

(d) Marigold

  1. Gladiolus is generaly propogated by:

(a) Tuber

(b) Corm

(c) Rhizome

(d) Roots

  1. Optimum seed rate for marigold is (kg/ha)

(a) 0.5

(b) 1.5

(c) 2.5

(d) 3.5

  1. Art of training plants into different shapes of birds, domes, animals, umbrellas etc is known as

(a) Topiary

(b) Edges

(c) Standard shrubs

(d) Baradari

  1. “Hillocks are made to create a natural mountains scenery” are the characteristic feature of (informal style)

(a) Persian garden

(b) Mughal garden

(c) Japanese garden

(d) Rose garden of Ludhiana

  1. Running water, high protecting wall, terminal building and Baradari are the important feature of :

(a) Mughal garden

(b) Rose garden of Ludhiana

(c) English garden

(d) Persian garden

  1. Garden lanterns, garden pagoda, garden bridges, tea garden and flat garden are the unique feature of :

(a) Japanese garden

(b) Mughal garden

(c) English garden

(d) Rose garden

  1. In India date is harvested at

(a) Doka stage

(b) Dang stage

(c) Pind stage

(d) All of these

  1. Oleoresin is extracted from :

(a) Onion

(b) Garlic

(c) Chillies

(d) Fenugreek

  1. Panama disease of banana is prevented by

(a) Spraying copper fungicide

(b) Spraying zinc carrier

(c) Application of lime to the soil

(d) Providing adequate irrigation

  1. Which one of the following is not a self pollinated vegetables ?

(a) Cowpea

(b) French bean

(c) Tomato

(d) Chilli

  1. largest foreign exchange earners ?

(a) Coconut (c) Cashew

(b) Mango (d) Banana

  1. Zero energy cool chamber operates the principles of on

(a) Second law of thermodynamics

(d) Charle’s law

(b) Evaporative cooling

(c) Boyle’s law

31.Citronella is used for soaps

(a) Flavouring the cosmetics and

(b) Recovery of health

(c) Curing respiratory troubles

(d) Checking bleeding

  1. The medicinal plant known as “Second shilajeet” is

(a) Asparagus

(c) Kal Megh

(b) Safed musli

(d) Isabgol

  1. What is the correct sequence of the given five major fruits in descending order of their production in India ?

(a) Mango – Banana Grapes Citruss – Apple Apple

(b) Mango – Grapes – Banana -Citrus

(c) Banana Grapes Citrus – Mango – Apple

(d) Banana – Mango – Citrus – Grapes – Apple

  1. Japanese Long Green’ is a popular variety of

(a) Watermelon

(b) Cucumber

(c) Snake gourd

(d) Bottle gourd

  1. Which one of the following pairs is not correctly matched?

(a) Papaya Chinni champa

(b) Date palm: Gold finger

(c) Walnut Chakrata selections

(d) Strawberry: Tioga

  1. Which one of the following parts of the plant is considered free from viruses?

(a) Cambium

(c) Apical meristem

(b) Xylem

(d) Embryo

  1. ‘Mangala’ is an improved variety of :

(a) Arecanut

(b) Coconut

(d) Walnut

(c) Cashewnut

  1. In grapes, fore-pruning is done to

(a) Remove dead wood/shoots

(b) Encourage vegetative growth

(c) Encourage reproductive growth

(d) Dwarfen the plant

  1. Which one of the following ranges of soil pH is good for potato growth and development ?

(a) 4.8 to 5.4

(b) 5.5 to 7.5

(c) 7.0 to 8.0

(d) 7.5 to 8.5

  1. Which one of the following is a vector for transmitting leaf curl viruses in vegetable crops ?

(a) Aphids

(b) Thrips

(c) Honey bees

(d) White fly

  1. Which one of the following crops is used as both tubers and leafy vegetables

(a) Yam

(b) Elephant’s foot yam

(c) Lettuce

(d) Colocasis (Taro)

  1. Which one of the following is an ethylene absorbant ?

(a) KMnO4

(b) KCI

(c) K₂SO4

(d) Ca(NO3)2

  1. Around 395 mg of Ca per 100 g of edible portion is found in

(a) Fenugreek leaves

(b) Yam

(c) Peas

(d) Potato

  1. What is the optimum temperature required for snowball group cauliflower for curd initiation and development ?

(a) 4°C 8°C

(b) 10°C 16°C

(c) 18°C 21°C

(d) 22°C 25°C

  1. Which one of the following cropping systems is effective for the control of cabbage club rot ?

(a) Long rotation with non-cruciferous crops

(b) Intercropping with brussels sprout

(c) Intercropping with mustard

(d) Intercropping with turnip

  1. Which of the above are responsible for the deterioration of flowers after the harvest ?

(a) Temperature of the surrounding atmosphere

(b) Gaseous composition of the atmosphere surrounding the flowers

(c) Respiration rate of the flowers

(d) All of these

  1. Consider the following fruits :
  2. Banana
  3. Litchi
  4. Pineapple
  5. Strawberry

In which of the above is shape of the fruit one of the maturity indices for their harvesting?

(a) 1, 2 and 3 only

(b) 1 and 3 only

(c) 2 and 4 only

(d) 1, 2, 3 and 4

  1. Which of the statements given below is/ are correct ?

(a) Guava is propagated through seeds only

(b) Most common method of propagating litchi is air layering

(c) The propagation of peach is done by

budding on seedling peach

(d) Both (b) and (c)

  1. Which one of the following groups denotes the species of rose predominantly used for rose oil extraction ?

(a) Rosa bourboniana, R. foetida, R.indica

(b) R. chinensis, R. rugosa, R. canina

(c) R. damascena, R. centifolia, R. bournoniana

(d) R. multiflora, R. canina, R. chinensis

  1. Which one of the following is the recommended storage temperature range to extend the storage life of cut spikes of gladiolus for two weeks?

(a) – 2 to 0°C

(c) 10 to 15°C

(b) 1 to 2°C

(d) 20 to 25°C

  1. Which of the statements given below is/ are correct?

(a) Marigold flowers last longer if the field is irrigated before plucking of flowers

(b) Carnation flowers should always be transported pre-cooled

(c) Both (a) and (b)

(d) Neither (a) nor (b)

  1. Infectious chlorosis in banana is caused by which one of the following?

(a) Virus

(c) Fungus

(b) Bacteria

(d) Phanerogamic plant parasite

  1. Which one of the following is the vector for yellow vein mosaic of okra ?

(a) White fly

(b) Green plant hopper

(d) Jassids

(c) Aphids

  1. which one among the following vegetables has highest rate respiration?

(a) Beans

(b) Cabbage

(c) Carrot

(d) Onion

  1. Tomato is which one of the following?

(a) Long day plant

(b) Short day plant

(c) Day neutral plant

(d) Quantitative short day plant

  1. Which one of the following systems of orchard planting accommodates the maximum number of plants per unit area ?

(a) Square system

(b) Hexagonal system

(c) Rectangular system

(d) Contour system

  1. Rayan is commonly used as a rootstock in the propagation of which one of the following?

(a) Mango

(c) Tamarind

(b) Custard apple

(d) Sapota

  1. Aonla is best suited to grow under which one of the following?

(a) Acidic soil condition

(b) Slightly acidic to saline sodic soil conditions

(c) Calcareous soil condition

(d) Alkali soil condition

  1. Which one of the following methods of grafting is not normally used for plant propagation?

(a) Approach

(c) Veneer

(b) Bridge

(d) Whip

  1. Which of the statements given below is/ are correct?

(a) The flesh and seeds of Brinjal fruit contain linoleic and lenolenic acids which help in lowering blood cholesterol

(b) Cabbage gives protection against bowel cancer due to the presence of Indole-3 carbinol

(c) Neither (a) nor (b)

(d) Both (a) and (b)

  1. Which one of the following fruit crops is an amphidoploid ?

(a) Mango

(b) Strawberry

(c) Banana

(d) Kiwifruit

  1. Which one of the following properties of the seeds is tested by 2,3,5-triphenyl tetrazolium chloride (TZ) ?

(b) Purity

(a) Viability

(c) Moisture content

(d) Germination

  1. Which system is used for hybrid seed production in onion ?

(a) Self-compatibility

(b) Dioecious

(c) Cytoplasmic male sterility

(d) Genetic male sterility

  1. The deficiency of which one of the following elements causes die back or citrus decline disease in citrus ?

(a) Cobalt

(c) Manganese

(b) Copper

(d) Magnesium

  1. The deficiency of which one of the causes lime induced following chlorosis?

(a) Iron

(c) Boron

(b) Zinc

(d) Magnesium

  1. Which one of the following is a monoembryonic citrus species ?

(a) Citrus paradisi (Grape fruit)

(b) Citrus sinensis (Sweet orange)

(c) Citrus reticulata (Mandarin)

(d) Citrus grandis (Pummelo)

  1. Which one of the following cultivars of
    papaya is gynodioecious?

(a) Pusa Dwarf

(b) Pusa Nanha

(c) Pusa Giant

(d) Pusa Majesty

  1. Which one of the following conditions is
    the reason for the seedlessness in grapes ?
    “Thompson Seedless’

(a) Incomplete flower

(b) Non-viable pollen

(c) Parthenocarpy

(d) Stenospermocarpy

  1. Which one of the following causes inflorescence blight in cashew (as vector) ?

(a) Helopeltis antonii

(b) Plocaderus ferrugineus

(c) Nephoteryx sp.

(d) Thylocoptila paurosema

  1. Banana plant gives fruits only in life.

(a) Four times

(c) Twice

(b) Thrice

(d) Once

  1. Foster pink is a bud sport of:

(a) Apple

(b) Nagpur orange

(c) Kinnow orange

(d) Grape fruit

  1. Which one of the following is a non climacteric fruit?

(a) Banana

(b) Pineapple

(d) Plum

(c) Sapota

73 Which one of the following pairs is not correctly matched ?

(a) Pusa Sawani

(b) Pusa Barsati

(c) Pusa Katki

(d) Pusa Kiran

  1. Which of the following types of flowers are present in mango panicles ?

(a) Male and hermaphrodite

(b) Female only

(c) Male and female

(d) Male and neutral

  1. For controlling which one of the following are roots of Rauvolfia serpentina used ?

(a) High blood pressure

(b) Insulin levels

(c) Bronchial asthma

(d) Diarrhoea

  1. Patchouli (Pogostemon cablin) is the native of

(a) Indo-Malayan tropics

(b) Central America

(c) South Africa

(d) Mediterranean region

  1. Sigatoka is a serious fungal disease in banana first time reported in the Sigatoka valley in 1913 in

(a) Tamil Nadu

(b) Goa

(c) Fiji

(d) A.P.

  1. Harvesting or best pick in tea is referred as

(a) Two leaves and a bud

(b) Only bud

(c) Four leaves and bud

(d) Only leaves

  1. In hilly areas fruit plants should be planted in :

(a) Rectangular system

(b) Square system

(c) Quincunx system

(d) Contour system

  1. Which is frost-resistant papaya ?

(a) Carica papaya

(b) Carica cauliflower

(c) Carica candamarkensis

(d) None of the above

  1. In Onion ‘bolting’ takes place due to

(a) High temperature

(b) Low temperature

(c) Excess of nitrogen

(d) Deficiency of nitrogen

  1. Red flesh is a variety of :

(a) Tomato

(c) Guava

(b) Mango

(d) Papaya

  1. Gibberellic acid is commercially used to improve size of fruit in:

(a) Aonla

(b) Pomegranate

(c) Ber

(d) Grapes

  1. Mango malformation can be reduced by spraying of

(a) GA

(b) IBA

(c) NAA

(d) ABA

  1. Fruit crop tolerant to salinity is

(a) Ber

(b) Mango

(c) Orange

(d) Apple

  1. An organism which has acquired a heritable variation as a result of sudden change in the hereditary material is called as a :

(a) Hybrid

(b) Biotype

(c) Mutant

(d) Albino

  1. A polyploid having chromosome sets from different sources such as different 2.species is known as

(a) Autopolyploid

(b) Aneuploid

(c) Tetraploid

(d) Allopolypoid

  1. The increased performance of F, hybrid over its parents is called

(a) Dominance

(b) Heterosis

(d) None of these

(c) Crossing over

  1. Ratio of the genetic variance to the total variance which determines the relationship between phenotype and genotype is known as

(a) Genetic advance

(c) Heritability

(b) Penetrance

(d) Dominance

  1. Mass pedigree selection method of breeding is particularly, useful for improvement of

(a) Self pollinated crops

(b) Self compatible cross pollinated crops

(c) Self incompatible crops

(d) Dioecious crops

  1. Emasculation of flower is hybridization in necessary for

(a) Male sterile plants

(b) Self pollinated plants

(c) Self incompatible plants

(d) Dioecious plants

  1. Leafy vegetables like palak, amaranthus, spinach, are

(a) Highly cross pollinated

(b) Often cross pollinated

(c) Self pollinated

(d) Often self pollinated

  1. The modern hybrid tea roses were evolved as a result of which of the following crossing?

(a) Hybrid perpetuals x Tea roses

(b) Hybrid perpetuals × Floribunda

(c) Floribunda × Tea roses

(d) Tea roses x Polyanthus

  1. Mendel did not face the problem of linkage, however, seven characters studied by him were located on how many chromosomes ?

(a) Seven

(b) Four

(d) Three

(c) Five

  1. Test cross ratio in case of duplicate genes action will be

(b) 1:1:1:1

(a) 1:1

(c) 3:1

(d) 1:3

  1. A: T ratio in one strand of DNA duplex is 2, what will be the ratio in the complementary strand?

(a) 1.0

(b) 0.5

(c) 2.5

(d) 2.0

  1. The term gene was coined by

(b) Bateson

(a) Mendel

(c) Shull

(d) Johannsen

  1. Number of chromosomes in wheat endosperm is

(a) 21

(b) 42

(c) 63

(d) 14

  1. Cytoplasmic male sterility is best suited for hybrid seed production in

(a) SP crops

(b) CP crops

(c) Vegetatively propagated crops

(d) All above

  1. The first artificial hybrid was made by

(a) Mendel

(b) Thomas Fairchild

(c) Koelreuter

(d) Beal

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