agriculture MCQs – Page 276

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 Review each marked answer and report any item that may be outdated or unclear.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

5501. The term useful heterosis was first used by__________________?
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A. Jenkins (1935)

B. Hull (1950)

C. Richey (1914)

D. Meredith and Bridge (1972)

5502. The parry of Cauliflower which is eaten is__________________?
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A. Fruit

B. Flower

C. Bud

D. Inflorescence

5503. A child is born with an extra chromosome in each of it cells, the reason is___________________?
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A. Non-disjunction

B. Hybridization

C. Segregation

D. Crossing over

5504. Heterosis can be fully exploited in the form of_____________________?
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A. Synthetics

B. Composites

C. Hybrids

D. Multi lines

5505. A mutant organism (bacterium) that will not grow on a minimal medium does so on the addition of some grown factor is known as __________________?
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A. Auxotroph

B. Autotrophy

C. Heterotroph

D. Axenema

5506. In maize source of high lysine is___________________?
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A. Gang as

B. Opaque 2

C. Proline

D. African tall

5507. Kinds of nitrogen containing bases fond in RNA are__________________?
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A. Four

B. Six

C. Eight

D. Two

5508. Parthenogenesis is most commonly seen in___________________?
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A. Mango

B. Apple

C. Orange

D. Grape

5509. Eugenics refers to__________________?
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A. Genetics of eukaryotes

B. Experimental alterations in the structure of the genes

C. Science concerned with improvement of heredity of human race

D. Science concerned with improvement of heredity of animals

5510. Maximum vegetable crops belong to the family____________________?
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A. Cucurbitaceae

B. Cruciferae

C. Legumunaceae

D. Solanaceae

5511. The offspring of a cross between twp individuals differing in at least one set of characters is called__________________?
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A. Hybrid

B. Mutant

C. Polyploidy

D. Variant

5512. Which one is C4 crop plant_____________________?
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A. Sugarcane

B. all the above

C. Sorghum

D. Maize

5513. Mutant allele that has little or no effect on the expression of a tart is known as_____________________?
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A. Auxotroph

B. Armor

C. Axoneme

D. Atavism

5514. A gene which enhances the natural mutations rate of another gene in the same genome is kanown as___________________?
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A. Mutator gene

B. Mutable gene

C. Recepror gene

D. Articulator gene

5515. Polyploidy is most likely to result from ____________________?
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A. Occurrence of karyokinesis

B. Occurrence of crossing over

C. The crossing over between non homologous chromosomes

D. The failure of homologous chromosomes to separate during meiosis

5516. Apheliotropic gene is one which___________________?
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A. Affects more than one character

B. Affects only one character

C. Affects more than ten characters

D. Affects more than five characters

5517. A mutation which kills 50% of the individual that carry the mutation is known as_________________?
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A. Sub lethal mutation

B. Sub-vital mutation

C. Vital mutation

D. Lethal mutation

5518. Which of the following had great influence on Drawing during during formulation of his theory of natural selection_________________?
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A. Mathiss essay on population

B. De Vries theory of mutation

C. Mendess experiment on pea

D. Lamarks idea on inheritance of acquired characters

5519. When a cell with 40 chromosomes undergoes meiosis each of the four resulting cells has_____________________?
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A. 40 chromosomes

B. 10 chromosomes

C. 20 chromosomes

5520. Reciprocal recurrent selection is effective with___________________?
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A. Over dominance

B. Complete dominance

C. Incomplete

D. All the above

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