Match the different shapes of the cells:
Matching cell shapes
Tracheid cells are elongated (I - D).
Nerve cells are branched and long (II - C).
White blood cells have an amoeboid shape (III - B).
Red blood cells are round and biconcave (IV - A).
Final Answer: \[ I - D, II - C, III - B, IV - A \]
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 \( \overline{QM} + \overline{LN} + \overline{ML} + \overline{RN} - \overline{MN} - \overline{QL} = \):