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Botany
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TN State Board
TN 12th Standard
Botany
TEST : 33
TN State Board
TN 12th Standard
Botany
UNIT VIII: Biotechnology
Prepare / Learn
Q1.
Which one of the following is a case of wrong matching?
A.
Somatic - Fusion of two diverse hybridization cells
B.
Vector DNA - Site for tRNA synthesis - in vitro
C.
Micropropagation production of plants in large numbers
D.
Callus - Unorganised mass of cells produced in tissue culture
View Solution
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Answer :
Option B
Explaination / Solution:
No Explaination.
TN State Board
TN 12th Standard
Botany
UNIT IX: Plant Ecology
Prepare / Learn
Q2.
Which one of the following statements for pyramid of energy is incorrect, whereas the remaining three are correct?
A.
It is upright in shape
B.
Its base is broad
C.
It shows energy content of different trophic level organisms
D.
It is inverted in shape
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Answer :
Option D
Explaination / Solution:
No Explaination.
TN State Board
TN 12th Standard
Botany
UNIT VII: Genetics
Prepare / Learn
Q3.
Crossing over that results in genetic recombination in higher organisms occurs between
A.
Non-sister chromatids of a bivalent
B.
Two daughter nuclei
C.
Two different bivalents
D.
Sister chromatids of bivalents
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Answer :
Option A
Explaination / Solution:
No Explaination.
TN State Board
TN 12th Standard
Botany
UNIT VIII: Biotechnology
Prepare / Learn
Q4.
Polyethylene glycol method is used for
A.
biodiesel production
B.
seedless fruit production
C.
energy production from sewage
D.
gene transfer without a vector
View Solution
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Answer :
Option D
Explaination / Solution:
No Explaination.
TN State Board
TN 12th Standard
Botany
UNIT IX: Plant Ecology
Prepare / Learn
Q5.
Which one of the following animals may occupy more than one trophic levels in the same ecosystem at the same time?
A.
Goat
B.
Frog
C.
Sparrow
D.
Lion
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Answer :
Option C
Explaination / Solution:
No Explaination.
TN State Board
TN 12th Standard
Botany
UNIT VII: Genetics
Prepare / Learn
Q6.
Removal of introns and joining the exons in a defined order in a transcription unit is called
A.
Tailing
B.
Transformation
C.
Capping
D.
Splicing
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Answer :
Option D
Explaination / Solution:
No Explaination.
TN State Board
TN 12th Standard
Botany
UNIT VIII: Biotechnology
Prepare / Learn
Q7.
Somaclones are obtained by
A.
Plant breeding
B.
Irradiation
C.
genetic engineering
D.
tissue culture
View Solution
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Answer :
Option D
Explaination / Solution:
No Explaination.
TN State Board
TN 12th Standard
Botany
UNIT IX: Plant Ecology
Prepare / Learn
Q8.
Both hydrarch and xerarch successions lead to
A.
Highly dry conditions
B.
Excessive wet conditions
C.
Medium water conditions
D.
Xeric conditions
View Solution
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Answer :
Option C
Explaination / Solution:
No Explaination.
TN State Board
TN 12th Standard
Botany
UNIT VII: Genetics
Prepare / Learn
Q9.
Selection the correct option
Direction of RNA synthesis : Direction of reading of the template DNA strand
A.
5’ – 3’ : 3’ – 5’
B.
3’ – 5’ : 5’ – 3’
C.
5’ – 3’ : 5’ – 3’
D.
3’ – 5’ : 3 ‘ – 5’
View Solution
Add Work Space
Answer :
Option A
Explaination / Solution:
No Explaination.
TN State Board
TN 12th Standard
Botany
UNIT VIII: Biotechnology
Prepare / Learn
Q10.
The technique of obtaining large number of plantlets by tissue culture method is called
A.
Plantlet culture
B.
Organ culture
C.
Micropropagation
D.
Macropropagation
View Solution
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Answer :
Option C
Explaination / Solution:
No Explaination.
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TN State Board
TN 12th Standard
Botany
TEST : 33
Botany
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UNIT VI: Reproduction in Plants
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UNIT VII: Genetics
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UNIT VIII: Biotechnology
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UNIT IX: Plant Ecology
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UNIT X: Economic Botany
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Chapter 1: Asexual and Sexual Reproduction in Plants
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Chapter 2: Classical Genetics
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Chapter 3: Chromosomal Basis of Inheritance
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Chapter 4: Principles and Processes of Biotechnology
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Chapter 5: Plant Tissue Culture
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Chapter 6: Principles of Ecology
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Chapter 7: Ecosystem
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Chapter 8: Environmental Issues
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Chapter 9: Plant Breeding
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Chapter 10: Economically Useful Plants and Entrepreneurial Botany
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