Question
Which plant hormone is referred to as the "stress
hormone" and induces stomatal closure during water stress?Solution
 Abscisic Acid (ABA) is known as the stress hormone because it helps plants survive adverse conditions by inducing stomatal closure to reduce water loss and promote seed dormancy.
- If cos2B = sin(1.5B - 36 o ) , then find the measure of 'B'.
If sin(x + y) = 1 and sin(x - y) = (1/2), then what is the value of sinx cosx + 2sin2y + cos2y?Â
cos (sec-1 x) is equal to –
If 2x = cosec @ and 4/x = cot @ then the value of 2(x ² - 1/x ² ) is


The minimum value of 9 cos2 θ + 36 sec2 θ isÂ
If (1+sinθ)/cosθ = x, then find the value of secθ?
1.Â
If (sinx + siny) = a and (cosx + cosy) = b, then find the value of (sinx siny + cosx cosy).
[A] (a²+b²-2)/ 2
[B] (a2-b2<...
- Find the value of sin²40° + sin²50° + cos²60° + cos²30°.