3.The exine of pollen wall is of different electron density, the nexine dense and the sexine, comprising tectum, bacules, and foot layer, relatively thin.
4.EPSPs with short latencies were concluded to be monosynaptic.Most IPSPs were generated through polysynaptic paths, but monosynaptic IPSPs were also recorded in the tectum.
4.When infrared radiation falls on the facial pit organ, electric activity can be recorded from the optic tectum, the part of the brain with which the optic nerve is connected.