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Biology

General

Easy

Question

Given figure represents bio magnifications of DDT in an aquatic food chain. Select the incorrect statement regarding this

When agricultural fields are sprayed with DDT, it is carried by run off water into nearby aquatic bodies.
River water may have a very low concentration of DDT, but the carnivorous fish in that river may contain high concentration of DDT, which is still suitable for consumption by human beings.
Increased concentration of DDT in birds affects calcium metabolism due to which egg shells become thin and break before maturity.
None of these.

The correct answer is: River water may have a very low concentration of DDT, but the carnivorous fish in that river may contain high concentration of DDT, which is still suitable for consumption by human beings.

Related Questions to study

The graph given below represents the effect of sewage discharge on some important characteristics of river.

Select the correct option with respect to the peaks A and B.

The graph given below represents the effect of sewage discharge on some important characteristics of river.

Select the correct option with respect to the peaks A and B.

$L t subscript x not stretchy rightwards arrow a end subscript fraction numerator x sin a minus a sin x over denominator x minus a end fraction$

$L t subscript x not stretchy rightwards arrow a end subscript fraction numerator x sin a minus a sin x over denominator x minus a end fraction$

The figure shows position of structures prior to digestion process

Consider the statements with reference to the diagram
I) The process will start as the bolus will be forced to move from oral cavity to pharynx
II) The process involves the coordinated activity of the tongue, soft palate, pharynx and oesophagus
IV) During the process, the respiratory passage is blocked and breathing is temporarily interrupted
Identify the steps shown and choose the steps correctly describing the process from the above given statements.

The figure shows position of structures prior to digestion process

Consider the statements with reference to the diagram
I) The process will start as the bolus will be forced to move from oral cavity to pharynx
II) The process involves the coordinated activity of the tongue, soft palate, pharynx and oesophagus
IV) During the process, the respiratory passage is blocked and breathing is temporarily interrupted
Identify the steps shown and choose the steps correctly describing the process from the above given statements.

parallel

See the figure given below carefully
Identify the histology of which part of alimentary canal is given in the figure by choosing correct option.

See the figure given below carefully
Identify the histology of which part of alimentary canal is given in the figure by choosing correct option.

Identify the figure and choose the correct option stating its part A to F

Identify the figure and choose the correct option stating its part A to F

Identify the figure given below and choose the correct option

Identify the figure given below and choose the correct option

parallel

If $blank to the power of n C subscript 4 comma to the power of n C subscript 5 comma to the power of n C subscript 6$ are in A.P., then the value of n is

If $blank to the power of n C subscript 4 comma to the power of n C subscript 5 comma to the power of n C subscript 6$ are in A.P., then the value of n is

$L t subscript x not stretchy rightwards arrow a end subscript fraction numerator tan left parenthesis x minus a right parenthesis over denominator x squared minus a squared end fraction left parenthesis a not equal to 0 right parenthesis$

$L t subscript x not stretchy rightwards arrow a end subscript fraction numerator tan left parenthesis x minus a right parenthesis over denominator x squared minus a squared end fraction left parenthesis a not equal to 0 right parenthesis$

If $f left parenthesis x right parenthesis equals open curly brackets table row cell fraction numerator x to the power of 2 end exponent over denominator 2 end fraction comma text end text text i end text text f end text text end text 0 less or equal than x less than 1 end cell row cell 2 x to the power of 2 end exponent minus 2 x plus fraction numerator 3 over denominator 2 end fraction comma blank text end text text i end text text f end text text end text 1 less or equal than x less or equal than 2 end cell end table close$ then $text end text stack l i m with x rightwards arrow 1 below f left parenthesis x right parenthesis equals$

If $f left parenthesis x right parenthesis equals open curly brackets table row cell fraction numerator x to the power of 2 end exponent over denominator 2 end fraction comma text end text text i end text text f end text text end text 0 less or equal than x less than 1 end cell row cell 2 x to the power of 2 end exponent minus 2 x plus fraction numerator 3 over denominator 2 end fraction comma blank text end text text i end text text f end text text end text 1 less or equal than x less or equal than 2 end cell end table close$ then $text end text stack l i m with x rightwards arrow 1 below f left parenthesis x right parenthesis equals$

parallel

If $blank to the power of n minus 1 end exponent C subscript 3 plus to the power of n minus 1 end exponent C subscript 4 greater than to the power of n C subscript 3$ then

If $blank to the power of n minus 1 end exponent C subscript 3 plus to the power of n minus 1 end exponent C subscript 4 greater than to the power of n C subscript 3$ then

The length of a rectangular plate is measured by a meter scale and is found to be 10.0 cm. Its width is measured by vermier callipers as 1.00 cm. The least count of the meter scale and varmier callipers are 0.1cm and 0.01cm respectively (Obviously). Maximum permissible error in area measurement is

The length of a rectangular plate is measured by a meter scale and is found to be 10.0 cm. Its width is measured by vermier callipers as 1.00 cm. The least count of the meter scale and varmier callipers are 0.1cm and 0.01cm respectively (Obviously). Maximum permissible error in area measurement is

physics-General

A plane electromagnetic wave propagating in the x-direction has a wavelength of 60 mm. The electric field is in the y-direction and its maximum magnitude is 33Vm^-1 The equation for the electric field as function of x and t is

A plane electromagnetic wave propagating in the x-direction has a wavelength of 60 mm. The electric field is in the y-direction and its maximum magnitude is 33Vm^-1 The equation for the electric field as function of x and t is

physics-General

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A plane electromagnetic wave of frequency 40 MHz travels in free space in the X-direction. At some point and at some instant, the electric field $stack E with rightwards arrow on top$ has its maximum value of 750 N/C in Y-direction The wavelength of the wave is

A plane electromagnetic wave of frequency 40 MHz travels in free space in the X-direction. At some point and at some instant, the electric field $stack E with rightwards arrow on top$ has its maximum value of 750 N/C in Y-direction The wavelength of the wave is

physics-General

A flood light is covered with a filter that transmits red light. The electric field of the emerging beam is represented by a sinusoidal plane wave $E subscript x end subscript equals 36 s i n invisible function application open parentheses 1.20 cross times 10 to the power of 7 end exponent z minus 3.6 cross times 10 to the power of 15 end exponent t close parentheses V divided by m$ The average intensity of the sun will be

A flood light is covered with a filter that transmits red light. The electric field of the emerging beam is represented by a sinusoidal plane wave $E subscript x end subscript equals 36 s i n invisible function application open parentheses 1.20 cross times 10 to the power of 7 end exponent z minus 3.6 cross times 10 to the power of 15 end exponent t close parentheses V divided by m$ The average intensity of the sun will be

physics-General

A lamp emits monochromatic green light uniformly in all directions. The lamp is 3% efficient in converting electrical power to electromagnetic waves and consumes 100W of power. The amplitude of the electric field associated with the electromagnetic radiation at a distance of 10m from the lamp will be -

A lamp emits monochromatic green light uniformly in all directions. The lamp is 3% efficient in converting electrical power to electromagnetic waves and consumes 100W of power. The amplitude of the electric field associated with the electromagnetic radiation at a distance of 10m from the lamp will be -

physics-General

parallel

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