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 sphere of radius R is cut from a larger solid sphere of radius 2R as shown in the figure. The ratio of the moment of inertia of the smaller sphere to that of the rest part of the sphere about the Y-axis is : 
A constant voltage of 50 V is maintained between the points A and B of the circuit shown in the figure. The current through the branch CD of the circuit is :
The current passing through the battery in the given circuit, is: 
Given below are two statements:
Statement I: The primary source of energy in an ecosystem is solar energy.
Statement II: The rate of production of organic matter during photosynthesis in an ecosystem is called net primary productivity (NPP).
In light of the above statements, choose the most appropriate answer from the options given below: