agriculture MCQs – Page 261

Practise multiple-choice questions from agriculture for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

agriculture Mcqs

1. soil science 2. agronomy 3. entomology 4. water management 5. horticulture 6. agricultural economics 7. plant pathology 8. food technology 9. animal husbandry 10. plant breeding and genetics

5201. In lucern, toxic substance is found in_____________________?
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A. All the above

B. Coumarin

C. Saponin

D. Neurotoxin

5202. The smell in onion bulb is due to________________?
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A. Sulphur compounds

B. Bad odour of soil

C. Much sugar

D. Freshy leaves

5203. Convergent improvement was proposed by________________?
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A. Hays (1919)

B. Richy (1920)

C. East (1920)

D. Jones (1920)

5204. The first artificial hybridization in fruit crops was done by____________________?
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A. Knight

B. Morgan

C. Muller

D. Fischer

5205. The most effective method for the transfer of oligogenic characters________________?
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A. Disruptive

B. Bulk

C. Backcross

D. Pedigree

5206. Heterobeltiosis is estimated over the___________________?
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A. Popular variety

B. Mid parent

C. Standard parent

D. Better parent

5207. The value of regression and correlation is the same when the correlation between two variables is________________?
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A. Negative

B. Imperfect

C. Positive

D. Perfect

5208. Mating system in which each female gamete () with every male gamete is known as____________________?
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A. None of the above

B. Genetic disassortative mating

C. Random mating

D. Genetic assortative mating

5209. Dominance hypothesis of heterosis was first proposed by__________________?
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A. Bruce (1910)

B. Shull (1914)

C. Davenport (1908)

D. Davis (1927)

5210. The variety of genes and genotypes found in a particular crop special are_____________________?
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A. Gene sanctuaries

B. Genetic erosion

C. Field gene banks

D. Genetic diversity

5211. Cytoplasmic genetic male sterility was first discovered by___________________?
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A. Jones and Davies (1944)

B. Nilson (1900)

C. Bruce and Keeble (1908)

D. Devaries and Correns (1900)

5212. A place or area where maximum variability of crop plants is observed__________________?
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A. Micro centers

B. Gene sanctuaries

C. Centers of diversity

D. Genetic diversity

5213. Pure line theory was developed by_______________?
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A. Thoday (1960)

B. Johannsen (1903)

C. Mather (1951)

D. Allard (1957)

5214. Anthesis starts in wheat at__________________?
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A. 7.00 am

B. 5.20 pm

C. 10.00 am

D. 1.15 pm

5215. Rice flowers have___________________?
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A. Eight stamens

B. Six stamens

C. None of the above

D. Four stamens

5216. Concept of biparental mating was developed by__________________?
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A. Comstock and Robinson (1948)

B. Hayman (1958)

C. Jinks and Jones (1958)

D. Perkins (1968)

5217. Conservation of germplasm under natural condion is called_________________?
0

A. In-situ conservation

B. Obsolute cultivars

C. Ex-situ conservation

D. Gene bank

5218. Cuscuta is an object ional weed of_____________________?
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A. Sorghum

B. Luceru

C. Berseem

D. Cowpeas

5219. Citification is not required for_____________________?
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A. Nucleus seed

B. Certified seed

C. Foundation seed

D. Breeder seed

5220. Mating between distantly related individuals is known as________________?
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A. All the above

B. Out breeding

C. Inbreeding

D. Amphimixis

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