Question

The multicellular organisms remove excretory products by the process of simple diffusion.

• A. When the peritubular capillaries are dilated.
• B. When the pH of the urine decreases.

Answer 1

The correct option is B When the pH of the urine decreases.

The unicellular organisms remove excretory products by the process of simple diffusion.The process of elimination of excretory products is complex in multicellular organisms, so they have special organs like kidneys, ureter, urethra, urinary bladder etc to perform the same function.