1.  10-20 dB  

2.  30-60 dB  

3.  70-90 dB  

4.  120-150 dB  

4
Correct Answer :

30-60 dB

 


Explanation :
No Explanation available for this question

1.  Hydrilla

2.  Water hyacinth

3.  Larva of stone fly

4.  Blue-green algae

4
Correct Answer :

Larva of stone fly


Explanation :
No Explanation available for this question

1.  India

2.  France

3.  USA

4.  Britain

4
Correct Answer :

USA


Explanation :
No Explanation available for this question

1.  First trophic level (T1)

2.  Second trophic level (T2)

3.  Third trophic level (T3)

4.  Fourth trophic level (T4)

4
Correct Answer :

First trophic level (T1)


Explanation :
No Explanation available for this question

1.  Allen's law

2.  Mendel's law

3.  Gause's competitive exclusion principal

4.  Weismann's theory

4
Correct Answer :

Gause's competitive exclusion principal


Explanation :
No Explanation available for this question

1.  Proteases

2.  α-amylases

3.  Hydrolases

4.  Peroxidases

4
Correct Answer :

Hydrolases


Explanation :
No Explanation available for this question

1.  excess of STH

2.  excess of thyroxin

3.  deficiency of thyroxin

4.  excess of adrenaline

4
Correct Answer :

excess of STH


Explanation :
No Explanation available for this question

1.  protective resemblance with the surroundings

2.  defensive adaptation of skin against ultraviolet radiations

3.  drug resistance

4.  darkening of skin due to smoke from industries

4
Correct Answer :

protective resemblance with the surroundings


Explanation :
No Explanation available for this question

1.  UV rays

2.  visible rays

3.  infra-red rays

4.  X-rays

4
Correct Answer :

UV rays


Explanation :
No Explanation available for this question

1.  Selaginella

2.  Metasequoia

3.  Pinus

4.  Cycas

4
Correct Answer :

Cycas


Explanation :
No Explanation available for this question

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