Biology - Study Mode

[#401] Which of the following function is performed by the kidneys in the human body?
Correct Answer

(A) Excretion

Explanation

Solution: Most people know that a major function of the kidneys is to remove waste products and excess fluid from the body. These waste products and excess fluid are removed through the urine. The production of urine involves highly complex steps of excretion and re-absorption.

[#402] Which one is located at the rear of the abdominal cavity?
Correct Answer

(B) Kidneys

Explanation

Solution: The abdominal cavity is lined with a protective membrane termed the peritoneum. The inside wall is covered by the parietal peritoneum. The kidneys are located behind the peritoneum, in the retroperitoneum, outside the abdominal cavity.

[#403] Urea is transported through
Correct Answer

(C) Blood Plasma

Explanation

Solution: Urea is the product of excess amino acids. It is transported into blood plasma by the liver and removed by the kidney. This process is called excretion.

[#404] The main function of Henle's loop is
Correct Answer

(D) Conservation of water

Explanation

Solution: The principal function of the loop of Henle is in the recovery of water and sodium chloride from urine.

[#405] The ultimate cause of water movement in a plant stem against gravity is
Correct Answer

(C) Transpiration

Explanation

Solution: The ultimate cause of water movement in a plant stem against gravity is transpiration.