Plant Biotechnology MCQ Questions & Answers

41

Stable transformation of plants is reliably obtained by

A) Agrobacterium plasmid integration B) Electroporation C) Microinjection D) Silicon carbide whisker

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Answer & Solution

Answer: Option A

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42

Some of the cytokinins used in plant tissue culture media are given below:
P. BAP
Q. Zeatin
R. Kinetin
S. 2iP
Which of these are synthetic analogs?

A) P and Q only B) Q and S only C) R and S only D) P and R only

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Answer & Solution

Answer: Option D

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43

Somatic embryogenesis is a procedure in plant tissue culture methodology described best as

A) Formation of both shoot and root meristem B) Formation of stable embryos C) Formation of axillary buds D) None of the above

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Answer & Solution

Answer: Option B

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44

Cells of meristemoid are best described as

A) Differentiated and non-dividing B) Dedifferentiated and dividing C) Differentiated and dividing D) Dedifferentiated and non-dividing

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Answer & Solution

Answer: Option C

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45

Determine the correctness or otherwise of the following Assertion [A] and the Reason [R].
Assertion [A]: A genetically engineered rice that produces beta-carotene in the rice grain is called Golden rice.
Reason [R]: Enabling biosynthesis of provitamin A in the rice endosperm gives a characteristic yellow/orange color.

A) Both [A] and [R] are false B) Both [A] and [R] are true but [R] is not the correct reason for [A] C) Both [A] and [R] are true and [R] is the correct reason for [A] D) [A] is true but [R] is false

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Answer & Solution

Answer: Option C

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46

Match the herbicides in Group I with the target enzymes in Group II.

Group I	Group II
P. Glyphosate	1. Nitrilase
Q. Bromoxynil	2. Acetolactatesynthetase
R. Sulphonylureas	3. Dehalogenase
S. Dalapon	4. 5-Enolpyruvyl shikimate 3-phosphate synthase

A) P-4, Q-1, R-2, S-3 B) P-2, Q-1, R-4, S-3 C) P-4, Q-3, R-2, S-1 D) P-3, Q-2, R-4, S-1

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Answer & Solution

Answer: Option A

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47

Plant secondary metabolites production in suspension culture is mainly targeted for

A) Obtaining metabolites in aseptic condition B) Enhanced in vitro production of desired metabolite C) Enhanced production of all metabolites D) Obtaining new metabolites

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Answer & Solution

Answer: Option B

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48

To produce plants that are homozygous for all traits, the best choice is

A) Protoplast culture B) Cell suspension culture C) Anther and pollen culture D) Apical meristem culture

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Answer & Solution

Answer: Option C

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49

Virus resistant transgenic plants can be developed by the expression of

A) Cowpea trypsin inhibitor B) Crystalline toxin protein C) Defective movement protein D) Snowdrop lectin

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Answer & Solution

Answer: Option C

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50

Expression of antisense RNA of ACC synthase in transgenic tomato plants inhibited the synthesis of ethylene resulting in

A) Change in color from green to red B) Change in aroma C) Charge in color from red to green D) None of the above

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Answer & Solution

Answer: Option D

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Plant Biotechnology MCQ Questions & Answers | Biotechnology