In the female cockroach:
Collateral glands: These glands are present in female cockroaches. They secrete a sticky substance.
Spermatheca: This organ stores the sperm received from the male cockroach.
Mushroom glands: These glands secrete ootheca (egg case).
Anal styles: These are absent in female cockroaches. They are found only in male cockroaches.
Phallic glands: These are also absent in female cockroaches. They are found only in male cockroaches.
Therefore, collateral glands (A) and spermatheca (C) are present in the female cockroach.
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 :