Biology
General
Easy
Question
The activity of 
-amylase in the endosperm of barley germinating seed in induced by :
- Ethylene
- Cytokinin
- IAA
- Gibberellin
The correct answer is: Gibberellin
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A phytohormone involved in the de novo synthesis of -amylase in germinating seeds is :
A phytohormone involved in the de novo synthesis of -amylase in germinating seeds is :
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A particle 
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at 
. At this instant of time, the horizontal component of its velocity is 
. A bead 
of the same mass as is ejected from at along the horizontal string 
(see figure) with the speed . Friction between the bead and the string may be neglected. Let 
and 
be the respective time taken by and to reach the point 
. Then
A particle is sliding down a frictionless hemispherical bowl. It passes the point at . At this instant of time, the horizontal component of its velocity is . A bead of the same mass as is ejected from at along the horizontal string (see figure) with the speed . Friction between the bead and the string may be neglected. Let and be the respective time taken by and to reach the point . Then
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A stone of mass 1 kg tied to a light inextensible string of length 
is whirling in a circular path of radius 
in a vertical plane. If the ratio of the maximum tension in the string to the minimum tension in the string is 4 and if 
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A stone of mass 1 kg tied to a light inextensible string of length is whirling in a circular path of radius in a vertical plane. If the ratio of the maximum tension in the string to the minimum tension in the string is 4 and if is taken to be , the speed of the stone at the highest point of the circle is
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A string of length L is fixed at one end and carries a mass M at the other end. The string makes 2/p revolutions per second around the vertical axis through the fixed end as shown in the figure, then tension in the string is
A string of length L is fixed at one end and carries a mass M at the other end. The string makes 2/p revolutions per second around the vertical axis through the fixed end as shown in the figure, then tension in the string is
physics-General
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A particle is projected with velocity 
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The distance at which the particle stops is
A particle is projected with velocity along . The deceleration on the particle is proportional to the square of the distance from the origin i.e., The distance at which the particle stops is
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biology
Which enzyme is synthesized de-novo in aleurone layers of germinating seeds due to the effect of gibberellins ?
Which enzyme is synthesized de-novo in aleurone layers of germinating seeds due to the effect of gibberellins ?
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A particle moves along the sides AB, BC, CD of a square of side 25 m with a velocity of 15
Its average velocity is
A particle moves along the sides AB, BC, CD of a square of side 25 m with a velocity of 15 Its average velocity is
physics-General
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The 
plot of a moving object is shown in the figure. The average velocity of the object during the first 10 seconds is
The plot of a moving object is shown in the figure. The average velocity of the object during the first 10 seconds is
physics-General
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From the following displacement-time graph find out the velocity of a moving body
From the following displacement-time graph find out the velocity of a moving body
physics-General
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The acceleration-time graph of a body is shown below
The most probable velocity-time graph of the body is
The acceleration-time graph of a body is shown below
The most probable velocity-time graph of the body is
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The given graph shows the variation of velocity with displacement. Which one of the graph given below correctly represents the variation of acceleration with displacement
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Acceleration-time graph of a body is shown. The corresponding velocity-time graph of the same body is
Acceleration-time graph of a body is shown. The corresponding velocity-time graph of the same body is
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A train moves from one station to another in 2 hours time. Its speed-time graph during this motion is shown in the figure. The maximum acceleration during the journey is
A train moves from one station to another in 2 hours time. Its speed-time graph during this motion is shown in the figure. The maximum acceleration during the journey is
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The graph of displacement v/s time is 
Its corresponding velocity-time graph will be
The graph of displacement v/s time is Its corresponding velocity-time graph will be
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