Study the following and pick up the correct statements:
I. The peripheral doublets of a flagellum are interconnected by linkers called nexins.
II. The basal granule of flagellum is connected to plasma membrane and nucleus by rootlets.
III. Flagellum in Monas are strichomonate type.
IV. Pantomonemantic flagellum is found in Polytoma.
The percentage error in the measurement of mass and velocity are 3% and 4% respectively. The percentage error in the measurement of kinetic energy is:
If \( L, M, N \) are the midpoints of the sides PQ, QR, and RP of triangle \( \Delta PQR \), then \( \overline{QM} + \overline{LN} + \overline{ML} + \overline{RN} - \overline{MN} - \overline{QL} = \):