Please provide the solutions to the following biology questions, focusing on filtration in kidneys, amoeba's circulatory system, and spirogyra cell description.

Here are the solutions to your biology questions:

SECTION 1 (Nineteen questions)

1. Filtration of wastes in the kidneys takes place in the
The glomerulus is a network of capillaries where blood is filtered to form urine.

• C) Glomerulus

2. Lower organisms like the amoeba do not have a blood circulatory system because:
Amoebas are single-celled organisms with a large surface area to volume ratio, allowing for efficient diffusion of substances directly with their environment.

• C) They have a large surface to volume ratio

3. Which of the following best describe a spirogyra cell?
Spirogyra is a filamentous green alga. It is multicellular