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Botany
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TN State Board
TN 12th Standard
Botany
TEST : 36
TN State Board
TN 12th Standard
Botany
UNIT IX: Plant Ecology
Prepare / Learn
Q1.
Which of the following is not one of the prime health risks associated with greater UV radiations through the atmosphere due to depletion of stratospheric ozone?
A.
Damage to eyes
B.
Increased liver cancer
C.
Increased skin cancer
D.
Reduced Immune system
View Solution
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Answer :
Option B
Explaination / Solution:
No Explaination.
TN State Board
TN 12th Standard
Botany
UNIT VII: Genetics
Prepare / Learn
Q2.
Taylor conducted the experiment to prove semiconservative mode of chromosome replication on
A.
Drosophila melanogaster
B.
e-coli
C.
Vinca rosea
D.
vicia faba
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Answer :
Option D
Explaination / Solution:
No Explaination.
TN State Board
TN 12th Standard
Botany
UNIT IX: Plant Ecology
Prepare / Learn
Q3.
A location with luxuriant growth of lichens on the trees indicates that the
A.
trees are very healthy
B.
trees are heavily infested
C.
location is highly polluted
D.
location is not polluted
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Answer :
Option D
Explaination / Solution:
No Explaination.
TN State Board
TN 12th Standard
Botany
UNIT VII: Genetics
Prepare / Learn
Q4.
The new strand synthesized in small pieces and then joined together during DNA replication is called
A.
Dead strand
B.
Lagging strand
C.
Leading strand
D.
All of these
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Answer :
Option B
Explaination / Solution:
No Explaination.
TN State Board
TN 12th Standard
Botany
UNIT IX: Plant Ecology
Prepare / Learn
Q5.
The ozone of atmosphere in which the ozone layer is present is called
A.
ionosphere
B.
mesosphere
C.
stratosphere
D.
troposphere
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Answer :
Option C
Explaination / Solution:
No Explaination.
TN State Board
TN 12th Standard
Botany
UNIT VII: Genetics
Prepare / Learn
Q6.
What is incorrect about the following figure representing DNA replication
A.
The direction of DNA replication in strand (i)
B.
The direction of DNA replication in strand (ii)
C.
Discontinuous replication of strand (i)
D.
Discontinuous replication of strand (ii)
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Answer :
Option C
Explaination / Solution:
No Explaination.
TN State Board
TN 12th Standard
Botany
UNIT IX: Plant Ecology
Prepare / Learn
Q7.
Which one of the following is a wrong statement?
A.
Most of the forests have been lost in tropical areas
B.
Ozone in upper part of atmosphere is harmful to animals
C.
Greenhouse effect is a natural phenomenon
D.
Eutrophication is a natural phenomenon in freshwater bodies
View Solution
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Answer :
Option B
Explaination / Solution:
No Explaination.
TN State Board
TN 12th Standard
Botany
UNIT VII: Genetics
Prepare / Learn
Q8.
DNA multiplication is called
A.
Translation
B.
Replication
C.
Transduction
D.
Transcription
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Answer :
Option B
Explaination / Solution:
No Explaination.
TN State Board
TN 12th Standard
Botany
UNIT IX: Plant Ecology
Prepare / Learn
Q9.
Good ozone is found in the
A.
mesosphere
B.
troposphere
C.
stratosphere
D.
ionosphere
View Solution
Add Work Space
Answer :
Option C
Explaination / Solution:
No Explaination.
TN State Board
TN 12th Standard
Botany
UNIT VII: Genetics
Prepare / Learn
Q10.
The complete set of chromosome inherited as a single unit from one parent is known as
A.
Genome
B.
Linkage
C.
Gene pool
D.
Genotype
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Answer :
Option A
Explaination / Solution:
No Explaination.
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TN State Board
TN 12th Standard
Botany
TEST : 36
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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