plant breeding and genetics MCQs – Page 9

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

plant breeding and genetics Mcqs
161. Which feature is not found in all living beings____________________?
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A. Protein synthesis in ribosomes

B. Some triplet code for amino acids

C. Energy storage in high high energy phosphate bonds

D. Types of protein occurring in the body

162. Occurrence of cells in diploid organisms containing multiples of the 2n genomes is known as____________________?
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A. Aneupoidy

B. Amphidiploids

C. Allopolyploid

D. End polyploidy
163. The enzymes and pigments associated with photosynthesis are located in ___________________?
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A. Protoplast

B. Chloroplast

C. Plastid

D. Leucoplast

164. Mendel was lucky to use pea plants for genetical experiments because__________________?
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A. The seven characters he studied were on different chromosomes

B. They have round seeds with lot of proteins

C. They showed one type of flowers

D. they belong to the family leguminous

165. Evolution proceed on account of____________________?
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A. Adaptations through genervation

B. Conversion pf organism to change of environment

C. Struggle for existence

D. Fossils

166. A dihybrid ratio is____________________?
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A. 3:01

B. 1:1:1:1

C. 9:3:3:1

D. 27:9:9:3:3:3:1

167. The diameter of mitochondria is __________________?
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A. 40-70 micron

B. 1-4 micron

C. 0.5-2 micron

D. 2-4 micron

168. The new crop critical has been evolved by intervener hybridization between________________________?
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A. Wheat & rice

B. Wheat & Anglos

C. Rye & Wheat

D. Rice & maize

169. Self incompatibility is used for hybrid seed production in______________________?
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A. Cabbage

B. Maize

C. Rice

D. Tomato

170. mitosis is the normal process in a living cell but sudden and abnormal mitosis in an organ will some time result in__________________?
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A. Gastrula

B. New organ

C. Zygote

D. Cancer
171. Reproduction from an unfertilized egg or reproduction without fertilization may be defined as___________________?
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A. Inbreeding

B. Calistoga

C. Chimera

D. Clone
172. Three important law of heredity proposed by Mendel relate to___________________?
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A. Gene linkage, character se gregation and independent assortment

B. Segregation, independent assortment and gene linkage

C. Segregation, independent assortment and dominance recessive ness

D. Gene linkage, dominance and segregation

173. If the haploid number of chromosomes in a plant is 12, then the number of chromosomes in monosmic is_________________?
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A. 23

B. 24

C. 12

D. 22

174. Diagrammatic representation of the chromosomes of an organism arranged according to their size is called_____________________?
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A. Karyotype

B. Ideogram

C. Phenotype

D. Gene map

175. Organisms that can synthesize all their substances from simple inorganic molecules are termed as____________________?
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A. Heterotrophic

B. Phototrophic

C. Audacious

D. Autotrophic
176. Ieucaena lencocephala is a popular tree for______________________?
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A. Nutritive forage

B. Seasonal fruit

C. Medicinal plant

D. Beautification

177. Where would you look for active cell division in a plant _____________________?
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A. Cortex cells

B. Pith cells

C. Tips of stem & roots

D. Internodes regions

178. Gene for gene hypothesis was proposed by__________________?
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A. Flor (1956)

B. Vander plank (1963)

C. Nelson (1973)

D. Robinson (1971)

179. Plants can be made disease resistant by___________________?
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A. Colchicines treatment

B. Breeding with the wild variety

C. Hormone spray

D. Heat treatment

180. Prescribed germination percentage of foundation seed of groundnut____________________?
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A. 90

B. 95

C. 20

D. 70