Plant Biotechnology Multiple Choice Questions MCQ 015

141. The high auxin levels can inhibit development and growth of _________.
 A. root.
 B. shoot.
 C. embryo.
 D. organ.

142. Which suppresses the somatic embryogenesis.
 A. zinc.
 B. ethyl acetate.
 C. dimethyl sulphoxide.
 D. cytokinin.

143. The genetic potential of a plant cell to produce entire plant is termed as __________.
 A. callus
 B. explants.
 C. differentiation.
 D. totipotent cell.

144. Encapsulated embryoids behave like true seeds that can grow in soil are called _______ seeds.
 A. natural.
 B. hybrid.
 C. artificial.
 D. cybrid.

145. The development of adventitious organs or premordia from undifferentiated cell mass in tissue culture by the process of differentiation is
termed as _______.
 A. organogenesis.
 B. morphogenesis.
 C. histogenesis.
 D. cytogenesis.

146. The fusion of normal protoplast with enucleated protoplast that results in formation of ____.
 A. cybrid.
 B. hybrid.
 C. cytoplasmic hybrids.
 D. both a and c.

147. The viability of protoplasts can be checked by ________.
 A. dimethyl sulfoxide.
 B. phenosafranine stain
 C. tryphan blue.
 D. iodine.

148. The production of miniature planting materials in large number by vegetative multiplication through regeneration is called __________.
 A. plant tissue culture.
 B. callus induction
 C. micropropagation
 D. regeneration.

149. The regulation of gene expression during plant development can be controlled by ______.
 A. hormonal.
 B. environmental.
 C. genetic.
 D. all the above.

150. The mitochondrial DNA rearrangements leading to CMS specific alterations in transcription, translation is the principle of _________.
 A. cytoplasmic male sterility.
 B. antisense RNA technology.
 C. transgenic plants.
 D. transgenic animals.



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