Animal Excretory System
Biology ⇒ Animal Biology
Animal Excretory System starts at 9 and continues till grade 12.
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See sample questions for grade 11
Describe the process of deamination and its significance in excretion.
Describe the role of aldosterone in the excretory system.
Describe the role of the glomerulus in the nephron.
Explain the difference between excretion and egestion.
Explain why ammonia is excreted mainly by aquatic animals and not by terrestrial animals.
In a scenario where a person is dehydrated, which hormone will be secreted in higher amounts to conserve water?
A desert rodent produces highly concentrated urine and very little sweat. Explain the physiological adaptations in its excretory system that enable it to conserve water.
A patient has a genetic mutation that impairs the function of aquaporins in the collecting duct of the nephron. Predict and explain the effect this would have on urine output and body water balance.
Which hormone regulates the reabsorption of water in the collecting duct of the nephron?
(1) Insulin
(2) Antidiuretic hormone (ADH)
(3) Aldosterone
(4) Thyroxine
Which of the following animals excretes ammonia directly?
(1) Mammals
(2) Birds
(3) Freshwater fish
(4) Reptiles
Which of the following animals is ureotelic?
(1) Frog
(2) Bird
(3) Insect
(4) Snake
Which of the following is a correct sequence of urine formation?
(1) Filtration → Reabsorption → Secretion
(2) Secretion → Filtration → Reabsorption
(3) Reabsorption → Filtration → Secretion
(4) Filtration → Secretion → Reabsorption
In insects, the excretory organs are called ________ tubules.
The excretory organ in planarians is called ________.
The excretory system of crustaceans consists of ________ glands.
The functional unit of the kidney is called the ________.
The loop of Henle is important for concentrating urine. True or False?
True or False: Birds excrete uric acid as their primary nitrogenous waste to conserve water.
True or False: The main function of the excretory system is to maintain homeostasis.
True or False: The Malpighian tubules in insects open into the digestive tract.
