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Zoology
- Online Test
TN State Board
TN 12th Standard
Zoology
TEST : 23
TN State Board
TN 12th Standard
Zoology
Chapter 4: Principles of Inheritance and Variation
Prepare / Learn
Q1.
Improvement of human race by encouraging the healthy persons to marry early and produce large number of children is called
A.
Positive eugenics
B.
Negative eugenics
C.
Positive euthenics
D.
Positive euphenics
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Answer :
Option A
Explaination / Solution:
No Explaination.
TN State Board
TN 12th Standard
Zoology
Chapter 5: Molecular Genetics
Prepare / Learn
Q2.
Which one of the following pairs of codons is correctly matched with their function or the single for the particular amino acid?
A.
GUU, GCU – Alanine
B.
UAG, UGA – Stop codon
C.
AUG, ACG - start/methionine
D.
UUA, UCA – Leucine
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Answer :
Option B
Explaination / Solution:
No Explaination.
TN State Board
TN 12th Standard
Zoology
Chapter 6: Evolution
Prepare / Learn
Q3.
The most apparent change during the evolutionary history of Homo sapiens is raced in
A.
loss of body hair
B.
walking upright
C.
shortening of jaws
D.
remarkable increase in the brain size.
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Answer :
Option D
Explaination / Solution:
No Explaination.
TN State Board
TN 12th Standard
Zoology
Chapter 7: Human Health and Diseases
Prepare / Learn
Q4.
Which one of the following organisms is scientifically and correctly named, correctly printed according to the International Rules of Nomenclature and correctly described?
A.
Plasmodium falciparum – a protozoan causing the most serious type of malaria.
B.
Felis tigris – The Indian tiger is well protected in Gir forests.
C.
E. Coli – The full name is Entamoeba coli, a commonly occurring bacterium in human intestine.
D.
None of these
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Answer :
Option A
Explaination / Solution:
No Explaination.
TN State Board
TN 12th Standard
Zoology
Chapter 10: Applications of Biotechnology
Prepare / Learn
Q5.
Restriction endonucleases are enzymes which
A.
Make cuts at specific positions within the DNA molecule.
B.
Recognize a specific nucleotide sequence for binding of DNA ligase.
C.
Restrict the action of the enzyme DNA polymerase.
D.
Remove nucleotides from the ends of the DNA molecule.
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Answer :
Option A
Explaination / Solution:
No Explaination.
TN State Board
TN 12th Standard
Zoology
Chapter 11: Organisms and Population
Prepare / Learn
Q6.
An association of individuals of different species living in the same habitat and having functional interaction is:
A.
Biotic community
B.
Ecosystem
C.
Population
D.
Ecological niche
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Answer :
Option A
Explaination / Solution:
No Explaination.
TN State Board
TN 12th Standard
Zoology
Chapter 13: Environmental Issues
Prepare / Learn
Q7.
A scrubber in the exhaust of a chemical industrial plant removes
A.
Gases like sulphur dioxide.
B.
Particulate matter of the size 5 micrometer or above.
C.
Gases like ozone and methane
D.
Particulate matter of the size 2.5 micrometer or less
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Answer :
Option B
Explaination / Solution:
No Explaination.
TN State Board
TN 12th Standard
Zoology
Chapter 2: Human Reproduction
Prepare / Learn
Q8.
Which one of the following is not the function of placenta?
A.
To facilitate supply of oxygen and nutrients to embryo
B.
To secrete oestrogen
C.
To facilitate the removal of carbondioxide and material from embryo
D.
To secrete oxytocin during parturition
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Answer :
Option D
Explaination / Solution:
No Explaination.
TN State Board
TN 12th Standard
Zoology
Chapter 4: Principles of Inheritance and Variation
Prepare / Learn
Q9.
The _______deals with the control of several inherited human diseases especially inborn errors of metabolism
A.
Euphenics
B.
Eugenics
C.
Euthenics
D.
All of these
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Answer :
Option A
Explaination / Solution:
No Explaination.
TN State Board
TN 12th Standard
Zoology
Chapter 5: Molecular Genetics
Prepare / Learn
Q10.
The Okazaki fragments in DNA chain growth
A.
Result in transcription
B.
Polymerise in the 3’ to 5’ direction and forms replication fork
C.
Prove semi- conservative nature of DNA replication
D.
Polymerises in the 5’ to 3’direction and explain 3’ to 5’ DNA replication
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Answer :
Option A
Explaination / Solution:
No Explaination.
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TN State Board
TN 12th Standard
Zoology
TEST : 23
Zoology
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Chapter 1: Reproduction in Organisms
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Chapter 2: Human Reproduction
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Chapter 3: Reproductive Health
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Chapter 4: Principles of Inheritance and Variation
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Chapter 5: Molecular Genetics
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Chapter 6: Evolution
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Chapter 7: Human Health and Diseases
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Chapter 8: Immunology
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Chapter 9: Microbes in Human Welfare
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Chapter 10: Applications of Biotechnology
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Chapter 11: Organisms and Population
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Chapter 12: Biodiversity and its Conservation
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Chapter 13: Environmental Issues
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