Groundnut is nuts. It is another word for peanuts
It is the ratio of a line segment cut into two pieces of different lengths such that the ratio of the whole segment to that of the longer segment is equal to the ratio of the longer segment to the shorter segment.
There are many animal-like characteristics of Euglena. One of the common features that makes euglena be considered an animal is the flagellum which is the tail it used for locomotion.