plant breeding and genetics MCQs – Page 17

Practise focused plant breeding and genetics questions with marked answers for exam preparation and subject revision.

plant breeding and genetics Mcqs
321. Evolution may be described as___________________?
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A. Inheritance of acquired characters

B. Discontinuous genetic variation

C. Cntinuous genetic variation

D. History of development of larger biological units

322. The chief function of the centro mere concerns___________________?
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A. Chromosome replication

B. Chromosome movement

C. Nucleolus formation

D. Spindle formation

323. What is the function of Gorge bodies__________________?
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A. Segregation of the products of sunthesis

B. Protein synthesis

C. RNA synthesis

D. Photosynthesis

324. The oil content in sunflower is________?
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A. 25-35%

B. 50-60%

C. 35-40%

D. 45-55%

325. Colour blindness is a________?
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A. S*x limited trait

B. S*x influenced trait

C. None of above

D. S*x linked trait
326. The smallest cell organelle so far is_____________________?
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A. Peroxisome

B. Ribosome

C. Spherosome

D. Lysosome

327. From which part of the coconut tem coir is obtained_____________________/
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A. Per carp of fruit

B. Endosperm

C. Inflorescence

D. Leaf

328. In cereals limiting amino acids are________________?
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A. Threonine

B. Lysine

C. a and b

D. Methionine

329. An individual with two identical members of a part of geneue factors is called__________________?
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A. Hybrid

B. Dominant

C. Homozygous

D. Heterozygous

330. In Incern, resistance to spotted aphid is associated with__________________?
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A. High saponin in leaves

B. High silicant content

C. low sinigen in leaves

D. High DIMBOA in leaves

331. The disc florets of sunflower is__________?
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A. Pistillate

B. Staminate

C. Bisexual

D. Usually sterile

332. If two opposite alleles come together, and one of the two finds expression and mask the other in he body this facts is explained as_________________?
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A. Law of inheritance

B. Law of segregation

C. Law of limiting factors

D. Law of dominance
333. The cell theory was propounded by____________________?
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A. Morgan

B. Scheiiden and Schwann

C. Sarwin and Wallace

D. Watson and Crick

334. Superiority of heterozygote in respect to one or more traits in comparison to corresponding homozygote is known as____________________?
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A. Heterocyst

B. Hypostasis

C. Hetropyenosis

D. Epistastasis

335. Nobel prize for the discovery of operon model was awarded to__________________?
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A. Crick (1966)

B. Jacob and monod (1965)

C. Briuen and Davidson (1959)

D. Watson and Crick (1953)

336. Common and easily available source of energy does not contain RNA__________________?
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A. RNA

B. ATP

C. DNA/RNA

D. DNA

337. Number of lindage groups of chromosomes____________________?
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A. Tetraploid number of chromosomes

B. Diploid number of chromosomes

C. None of the above

D. Haploid number of chromosomes
338. Among the following the test cross is_________________?
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A. Ttxtt

B. TTxTt

C. TtxTt

D. TTxTT

339. Mendel studied contrasting characters for his breeding cxperiments with peas which of the following character he did not study_______________?
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A. Plant height

B. Pod color

C. Pod shape

D. Leaf shape
340. A nullisomic individual is represented by________________?
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A. 2n+1

B. 2n+2

C. 2n-2

D. 2n-1