141. The high auxin levels can inhibit development and growth of _________.
A. root.
B. shoot.
C. embryo.
D. organ.
ANSWER: B
142. Which suppresses the somatic embryogenesis.
A. zinc.
B. ethyl acetate.
C. dimethyl sulphoxide.
D. cytokinin.
ANSWER: D
143. The genetic potential of a plant cell to produce entire plant is termed as __________.
A. callus
B. explants.
C. differentiation.
D. totipotent cell.
ANSWER: D
144. Encapsulated embryoids behave like true seeds that can grow in soil are called _______ seeds.
A. natural.
B. hybrid.
C. artificial.
D. cybrid.
ANSWER: C
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.
ANSWER: A
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.
ANSWER: D
147. The viability of protoplasts can be checked by ________.
A. dimethyl sulfoxide.
B. phenosafranine stain
C. tryphan blue.
D. iodine.
ANSWER: B
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.
ANSWER: C
149. The regulation of gene expression during plant development can be controlled by ______.
A. hormonal.
B. environmental.
C. genetic.
D. all the above.
ANSWER: D
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.
ANSWER: A
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