The site of perception of light in plants during photoperiodism is
Leaf
Shoot apex
Stem
Axillary bud
The correct answer is option (A) : Leaf
LIST-I (Characteristic, feature) | LIST-II (Family) |
---|---|
A. Monoadelphous stamen | I. Malvaceae |
B. Cremocarp | III. Apiaceae |
C. Gynobasic style | II. Lamiaceae |
D. Capitulum | IV. Asteraceae |
A bob of heavy mass \(m\) is suspended by a light string of length \(l\). The bob is given a horizontal velocity \(v_0\) as shown in figure. If the string gets slack at some point P making an angle \( \theta \) from the horizontal, the ratio of the speed \(v\) of the bob at point P to its initial speed \(v_0\) is :
A primary function of the leaf is to provide nourishment for a plant. Leaves get this by extracting water from the earth and carbon dioxide from the air with the help of sunshine.
Following are the parts of a leaf: