131. The phenomenon of mature cells reverting to meristematic state to produce callus is _______.
A. dedifferentiation.
B. differentiation.
C. redifferentiation.
D. totipotency.
ANSWER: A
132. Nu body is a name given to _______.
A. ribosome.
B. microsome.
C. nucleosome.
D. centrosome.
ANSWER: C
133. Who is regarded as the Father of PTC?
A. Gottlieb Haberlandt.
B. Watson.
C. Barbara.
D. Crick.
ANSWER: A
134. The enzyme that can release the individual cells from the leaf tissues is ______.
A. macerozyme.
B. lysozyme.
C. zymogen.
D. chymotrypsin.
ANSWER: A
135. Addition of fresh nutrient medium and draining out the used medium is _________ culture
A. batch.
B. continuous.
C. discontinuous.
D. open continuous.
ANSWER: B
136. The mitochondrial DNA is _______.
A. like the nuclear DNA.
B. ss, linear.
C. ds, circular.
D. ss, circular.
ANSWER: C
137. Lepidoptera refers to _______.
A. bollworms.
B. beetles.
C. grosshopper.
D. aphids.
ANSWER: A
138. Coleoptera refers to _______.
A. bollworms.
B. beetles.
C. grosshopper.
D. aphids.
ANSWER: B
139. Lectins are plant ______ proteins
A. homo.
B. glyco.
C. hetero.
D. muco.
ANSWER: B
140. The expression of genes is made possible by the presence of _______.
A. promoters.
B. terminators.
C. suppressors.
D. inhibitors.
ANSWER: A
