Select the correct option for each question: The organ of excretion in earthworm is: A. Malpighian tubules B. Gills C. Nephridia D. Kidneys Which of the following is NOT a function of the liver? A. De

The organ of excretion in earthworm is: C. Nephridia

Nephridia are the excretory organs found in earthworms and other annelids, responsible for filtering waste products from the coelomic fluid.

The final answer is $\boxed{\text{C}}$

Which of the following is NOT a function of the liver? All the listed options (Detoxification, Production of bile, Storage of glycogen, Production of urea) are well-established functions of the liver. However, if a choice must be made, and assuming the question seeks the least exclusive function to the liver, then: C. Storage of glycogen

While the liver is crucial for glycogen storage and glucose regulation, muscles also store glycogen. Detoxification, production of bile, and production of urea are functions primarily or exclusively carried out by the liver.

The final answer is $\boxed{\text{C}}$

The smallest unit of life is: B. Cell

The cell is the fundamental structural and functional unit of all known organisms. Tissues, organs, and organelles are larger or smaller components, but the cell itself is the smallest unit capable of independent life.

The final answer is $\boxed{\text{B}}$

Diffusion is best described as movement of particles from: Diffusion is the net movement of particles from an area of higher concentration to an area of lower concentration. This movement occurs down a concentration gradient until equilibrium is reached.