471.
Which one is incorrect A
New individuals replace the dead ones
B
Homeostasis produces a self regulated steady state
C
Most homeostatic mechanisms operate through feed-back systems
D
Cell obtains instructions for division from a hereditary protein
Answer :
Cell obtains instructions for division from a hereditary protein
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472.
Morphologically similar but reproductively isolated species are called A
Neontological species
B
Sibling species
C
Allpatric species
D
Morpho-species
Answer :
Sibling species
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473.
Which of the following most used in genetic engineering A
E.coil and Agrobacterium
B
Mycobaceria and Salmonella
C
Aspergillus
D
Penicillium
Answer :
E.coil and Agrobacterium
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474.
The most important feature of all living systems is to A
utilize oxygen to generate energy
B
replicate the genetic information
C
produce gametes
D
utilize solar energy for metabolic activities
Answer :
replicate the genetic information
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Replication of the genetic information causes transfer of genetic information from one generation to the next.
475.
Long term adaptation is A
Inheritable
B
Formed due to evolution
C
Permanent
D
All of the above
Answer :
All of the above
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476.
If feedback inhibition a metabolic pathway gets 'Switched off' by A
Lack of substrate
B
Accumulation of end product
C
A rise in temperature
D
Competitive inhibition
Answer :
Accumulation of end product
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477.
Modern farmer's can increase the yield of Paddy upto 50% by the use of A
Cyanobateria
B
Rhizobium
C
Cyanobcteria in Azolla pinnata
D
Farmyardmanure
Answer :
Cyanobcteria in Azolla pinnata
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478.
Which is the cause of Anthrax disease A
Virus
B
Bacteria
C
Mycoplasma
D
Algae
Answer :
Bacteria
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479.
An important criterion for modern day classification is A
resemblances in morphology
B
anatomical and physiological traits
C
breeding habits
D
presence or absence of notochord
Answer :
anatomical and physiological traits
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Modern day classification is new systematics or biosystematics which includes all the characteristic of organisms gathered from the study of different sections like physiology, ecology, anatomy, biochemistry, cytology.
480.
Which of the following statements regarding nomenclature is correct A
Generic name always begins with capital letter whereas specific name with small letter
B
Scientific name should be printed in italics
C
Scientific name when types or handwritten should be underlined
D
All of the above
Answer :
All of the above
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