101. Glyphosate is a derivative of which amino acid?
A. Alanine.
B. Serine.
C. Valine.
D. Glycine.
ANSWER: D
102. Which one of the following is used mainly as a carbon source in PTC?
A. Sucrose.
B. Mannose.
C. Glucose.
D. Lactose.
ANSWER: A
103. Name the chemical compound produced by the plants.
A. Cytochemicals.
B. Histochemicals.
C. Phytochemicals.
D. Secondary metabolites.
ANSWER: C
104. The plating technique for cloning of single cells was given by Bergmann in ______.
A. 1960.
B. 1970.
C. 1980.
D. 1990.
ANSWER: A
105. Evan's blue dye stains the ______ cells.
A. dead.
B. live.
C. dividing.
D. expanding.
ANSWER: A
106. Asynchronous refers to the cultured plant cells vary greatly in _______.
A. size.
B. shape.
C. cell cycle.
D. all the above.
ANSWER: D
107. _______ acts as gelling agents used in Plant Tissue Culture
A. Gelatin.
B. Agar.
C. Biogel.
D. All the above.
ANSWER: D
108. Plant growth regulators influence growth, metabolism and ________ of cultured cells.
A. differentiation.
B. elongation.
C. enlargement.
D. duplication.
ANSWER: A
109. _______ is to introduce a new trait to the plant which does not occur naturally in the species.
A. Genetically modified crops.
B. GMCs.
C. biotech crops.
D. all the above.
ANSWER: D
110. Cytoplasmic hybrids refer to________.
A. cytoplast.
B. chloroplast.
C. tonoplast.
D. protoplast.
ANSWER: A
